How to Perform Mercedes Comand System Reset? Check the connectors and see if they are tightly connected. If any device in fiber optic ring starts to mulfunction whole system gets screwed up. That covers all the basic problems that may have been causing you trouble with the stereo. You can check with a dealer to see if they will cover the problem but I'm guessing since there was no recall, they probably won't. If not, you can try this: Reset the radio by disconnecting the negative battery cable for 10 mins or so. Causes of The Problem and How To Solve Them 1. For a better experience, please enable JavaScript in your browser before proceeding. Restart your iPhone and your car. St.Hubbins. The fiber optic cables are used to transmit the sound signal of your Mercedes-Benz between the different units for better sound quality and faster transfer rates. Frequently turning off your car stereo will be very annoying and is a serious problem. Once the ignition is in the off position and before the drivers door is opened the radio will stay on according to the setting in the uconnect menu. A voltmeter or a test light can be used to check for this. 5. Not sure how to start the testing. Does anyone have pictures or schematic of how to get to fiber ring? When the tensioner was replaced the problem went away. Why is the Height of a VHF Radio Antenna Important? 30,558 satisfied customers. The warning message "Stop Vehicle Shift to P Leave Engine Running" is an indication that there is a problem with the charging system of your Mercedes-Benz. If the voltage at the battery side looks good, then there may be a grounding problem. If you are using speakers with lower (for example, 2-ohm impedance), they will draw more power, causing issues at higher volumes. The most likely reason for your radio's sudden death is a blown fuse. Push the start/stop button once to bring your vehicle to a halt. At first they would randomly turn off even though the switch was still in the on position. Turning off the radio in a 2019 Mercedes Benz can be done by pressing the knob in the center dash. suspension bouncing cables on battery terminal too. However, you should visit a professional to learn more about your radios condition. 6 Answers 640 Here are some of the possible reasons why your car radio keeps on repeating itself: When you start your car engine, the alternator gets charged, and this charge is transferred to the battery. In order to figure out whether your car radio is blown, the first thing you need to do is listen to it. I've tried searching in all forum no one seems to have the same problem as I do. It's typical for your car's radio to switch off after . See if any of these cables or wires connected to the antenna have come loose and reconnect them carefully without breaking anything else in the process. Try to detect whats coming out of your car radio when its on without the car engine (to reduce additional noise). This size difference can cause the stereo to turn off at higher volumes. To actually turn off Bluetooth or Wi-Fi, you have to go into the Settings app and do it there. 2 replies Report Rather, it starts with slow torture like switching on and off repeatedly. A D V E R T I S E M E N T S. Radio started coming on without me turning it on. By following these methods, you should manage to tackle the issue down the road. The second fuse box may be on the left side of the trunk. To check to ground, the best place to start is the back of the stereo. This normally restores the systems to working order. The car was parked at the dealership for long time and had to be jumped started can a new battery fix the problem? Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. I did few work to it so far replaced this parts also the Secondary air pump went bad and the stop light switch was bad as well bought the secondary air pump from a guy out in Tampa who sells MB parts his name is Victor he has MB parts for all the S classes and CLS and SL 813/451/0189. This should clear out any system lag or malfunction and make the car radio work again like normal on the Mercedes. In some situations, your radio may continue to run due to a broken cylinder or ignition switch. 1. Skylaw i see you live in the same area i do. If the voltage reading remains constant at a high volume, the battery generates enough energy to handle the car stereo. Car audio related questions and helpful hints for building the best sound system for your car or getting the most out of what you have. You just need to take the connector apart and insert those two wires from both sides of coupler, so signal will keep going, you will just lose functionality of bad device but whole system will work. Whos has Engine ticking on e350 2011? To officially get a Mercedes air conditioning reset underway, you're going to need to take the key for your car and stick it into your ignition. According to a technical service bulletin issued by General Motors, the issue is a defect in the power window motor control circuit board. Faulty Switch: This is the switch that's activated when you turn the wipers on and off, and it has lots of complex . After 5 months of ownership with ZERO issues has started shutting off and then restarting itself as if I am turning it and off while in use. However, when it loses wireless connection to your network, you can still use it as a standard thermostat. Thank you. Q. I have a Buick Cascada convertible, which I really like. Might be some other device in fiber optic ring. 25,720 miles. Thanks - I am bringing it in, but was hoping for a quick solution. When one of your components goes down, your COMAND will stop functioning. The command control on the steering wheel is not working and the stereo shuts of every 30 minutes while I am driving it warns me 3 minutes before that I need to turn the ignition on or it will turn of Where do I begin in gaining access to the rear light on my E Class. Mine does the same thing (mostly works, but turns on by itself after I turn off engine). Motoristcare.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. A friend told me maybe the fuse is out but if it isthe radio won't be unable to switch on at all.Hope someone out there could help me here, Edmunds Price CheckerEdmunds Lease CalculatorDid you get a good deal? Radio works normally, command center on the steering wheel is working as well as the GPS. There also can be similar wiring issues between tuner and stereo. T burning oil i change pcv valve spark plugs but still i had to ad 1 liter after every Reconnecting the loose cable or replacing a bad power wire should solve the issue here. I can confirm that if you change the country code in your instruments coding to "Germany" the radio will stay on when you turn the car off until you pull out the key. is located and replace it first, Obviously turbos run hot and the bearings in the units reside in a rather brutal environment and that becomes worse when the engine is turned off and bearings sit in oil that is cooking from the heat (term is called coking)basically a turbo creates extremely high temperatures that will cause the lubrication in the turbo bearing housing to The resetting of a car stereo can cause two major problems, and these are as follows. How to Restart a Car After Stalling in Water? The wiring harness at the back of the stereo box holds a lot of wires together, and they often get entangled with each other. Fuse Issues May Be the Problem 3. Dont Ignore These Signs Of Transmission Trouble. Most likely the spring inside it is broken. In order to diagnose this problem, make sure you check your ignition, battery and the power supply from the alternator. Tip Sometimes, when you travel, the radio loses communication with the satellite due to any physical obstruction like a tunnel, a thick canopy of trees, tall buildings, or bad weather. 8 people found this helpful. 2023 CarGurus, Inc., All Rights Reserved. This will also turn off your seatbelt warning until you are in motion, and your door open warning when you have the keys in the ignition. Wiper relays usually cost less than $20. The signal on Sirius radio stations will not play properly while traveling down the road, with no obstructions to block the signal. I have to start it again. How Long Does It Take for a Radio Signal to Reach Mars? You might have issues with the radio cutting out if you're driving your car in any of these situations: A tunnel A thick canopy of trees The mountains Next to tall buildings How To Troubleshoot This When you purchase via our links, we may get a commission. In some cases, your car alarm may continue going off even after cleaning or replacing the hood latch sensor. please adise what to (Detailed Explanation & FAQs), How to Remove a Car Stereo Without Din Tools (5 DIY Steps). And nothing sours that happiness. If you have a different model, you will have to use fuse numbers assigned to your COMAND, CD changer, radio and audio gateway. Contact Us - Tools Needed To troubleshoot the current draw, you need a multimeter that can perform current reading. Gain the capacity to replace your fuses, and the potential to insulate yourself from shocking repair bills. Software issues. Why Does My Car Stereo Keep Resetting? Your automobile radio system won't switch off for a variety of reasons. Tacoma SR5 4.0L V6. The following errors occurred with your submission. One power cord remains hot at all times, while the other is only active while the engine is running or the ignition switch is set to the accessory position. Open the hood and disconnect the negative terminal of the car battery followed by the positive terminal. Sign in or register to get started. I tried getting to the fiber optic ring and didn't quite make it. And then it shuts off . How Do I replace the rear brake light on my 2008 E 350. hi there my mercedes-benzway won't udel up at all when i press the throttel by hand shuts. Make sure that Siri is turned on. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The issue could be related to the amp if you have an external amp or the speaker wires. You may want to check the terminals and make sure they are in good working order. Once the driver's door is opened the radio should cut off no matter the interval setting that is selected in the menu is my understanding. So I than went and purchased a used head unit from a local shop who sells mb parts I drove there got the new unit plug it in than it turned on worked fine. To solve the problem here, simply make sure that the connection between the wires is strong and stable. John Paul is AAA Northeasts Car Doctor. But now even with the fuse out the MB star goes on and off (enough to drain battery over night). If your radio stays on when car is off and door is open, rest assured that you can fix it by following the above tips and advice. This also causes cutoffs in the sound system and produces noise. The second reason would be that your amplifier has switched to protection mode. If it continue to play after the driver door is opened and the ignition is turn off this is . Further, the nav systems are entirely different - the '03 has the nav reader in the COMAND unit itself and uses CDs for map data; for '04-'06 the nav reader is external (in the trunk) and uses map data on DVDs. The fix is to replace the window regulator. Hope will work for you. Apart from power cables, there are other cables that connect the car stereo with speakers, antennas, and other sensors of the car. Radio fuse is. (Answered). Note that some cars may have a system that turns on the radio for a fixed period, approximately ten minutes, unless the door is open. Do it while the stereo has an active power supply to it. Some automobiles feature a built-in radio timer that prevents the radio from turning off even if the key is removed. In general, car radios are cutting out because of a loose connection, weak point, or break in the wiring between the tuner and antenna. Dude!!! Can a Car Throw Codes Without Check Engine Light. (Answered with Details), What Types of Technology Utilize Radio Waves? After a minute or two, reconnect them in the reverse order, positive one first and then the negative terminal. 27652 Camino Capistrano Unit B, Check if the amp is in protect mode. Your automobile radio system wont switch off for a variety of reasons. Stay up to date with everything Boston. 3. When the siren batteries fail, it can cause the alarm to go off. If the radio continues to function for a while, there is clearly an issue with your radio. Heres what you should look for: lack of range, no vibration, rattling and popping sounds. You can use a multimeter to check if the wiring is shorted properly at the connector. Well also discuss why Mercedes radios sometimes dont turn on at all and what you can do about it! Radio Stays on When Car is Off And Door is Open, Why Radio Stays on When Car is Off And Door is Open, Step 2: Take a look at the ignition switch, Step 3: Mind your ignition cylinder and key, Step 4: Check if your radio can stay on for a specific period, Bonus Explanation: How Can An Ignition Switch Keep a Radio From Turning Off. Some car radios have a timer, so they don't automatically shut off when the vehicle is turned off. It's common for the radio in your . Gave it to my mechanic yesterday the head unit and the amp. Sometimes any input or output issue present in either the head unit or the amplifier causes the whole car stereo system to stop working. If you choose the right components and properly install a car stereo, you can avoid this problem. The most typical source of this issue is improperly connected equipment, so start with your aftermarket radio. The radio turns off for 3 seconds then goes back on. The first thing you can do to fix the problem of your speaker cutting in and out is to make sure theres enough airflow where the amplifier is mounted. 7. Overheating. It handles well, and its just the right size for me. How Does HD Radio Work? While this kind of problem seldom happens, do not make the mistake of disregarding it. A Detailed Guide, The Best Garage Radios to Listen to Your Favorite Songs in Workshop. Windupradio is supported by its audience. So far it has just been annoying but I can see if I was navigating or using the hands free how this could cause numerous issues. My Car Radio Wont Turn Off: How to Solve? Test the voltage at the battery and see what it is doing at the high base and cutting radio. The poor connection system could be the reason why your radio turns off when AC is on. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our, Engine: 5.7L Ported SLP Runners and Intake. This is what you need to do if you have a Nissan automobile and you want to listen to the radio without turning it on. That is normal. 90 Seconds later, I see "COMAND SHUTTING DOWN" on the screen. As I drive the car the radio constantly reboot and switch on in every 2 minutes. 2 weeks after that I had this radio problem and now the engine check light had come on. 3 Mercedes: same problem..car start..3 mins and start an idle rough. A defective electrical system, Control Unit or a fault on the CAN Bus (Controller Area Network) are also causes that can cause your Mercedes-Battery battery to die. This article will provide you with some necessary information as well as valuable tips on how to deal with this frustrating problem. When one of your components goes down, your COMAND will stop functioning. Associate Degree. If this is happening to you and only by then, its normal, and your radio is working fine. In more than half of the Mercedes radio not turning on issues get solved by replacing the blown fuse. Is life better out there? No warning, no messages, everything else seems fine. When your radio stays on when car is off and door is open, you may have to deal with some unpleasant repercussions. Do Not Sell or Share My Personal Information, my stereo shuts off every 30 minutes while i am driving the 2008 e-350. Poof. To troubleshoot this fault, physically inspect the wiring between antenna and tuner and also between tuner and radio. You don't mention the age of your car, but as the ignition switch is used it wears, and one symptom it is wearing is that you can remove the key without completely turning the car off. ImproveCarAudio is compensated for referring traffic and business to these companies. The Fora platform includes forum software by XenForo. For you to do that, you will need to remove the fuses for the CD Changer, COMAND/ NAV / DVD Player / Radio, Audio Gateway AGW, and the Voice Unit if it is equipped with one, for at least 10 minutes. the motor turns off. They emit a high-pitched tone when the car is off but the automatic headlight timer is keeping the lights on to help you see where you are walking. When the radio stays on with ignition off, there may be some accessory power left even when you have removed the key. Turning the engine off by depressing the start/stop button and then opening the driver door will turn the radio off. After four years working as a radio mechanic, I know that everything about radio communication is not breezy, even though it greatly benefits us. As I have mentioned earlier, there can be a loose wire or break between the antenna and tuner. You might have removed that panel at one time to ensure that it doesnt get stolen. He has over 40 years of experience in the automotive business and is an ASE certified master technician. Why Is My Radio Static All of a Sudden And How to Fix It. I have a problem with my 04 S55 with the radio. That is why I set up a website sharing my skills and guides to help non-professional users use their radio headsets, set up their antennas or choose the right products, etc. I definitely will check the warranty. But if not you have to find which one is bad and just replace it. The multimeter should be able to read at least a 10 amp current. These connections to the instrument cluster also can come loose. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! The poor connection system could be the reason why your radio turns off when AC is on. Way 1: Restart/Force Restart Your iPhone 12 to Fix Bluetooth Keeps Disconnecting Way 2: Setting the Phone to the Airplane Mode Way 3: Forget Your iPhone 12 in Bluetooth and Re-add Way 4: Reset the iPhone 12 Settings to Resolve iPhone 12 Bluetooth Keeps Disconnecting Way 5: Clear the Bluetooth Devices Way 6: Set Up Bluetooth Headset Why is this happening? The car is off but the radio continues to play. fixed easily by checking all of your fuses, radio work again like normal on the Mercedes, head unit and amplifier with another speaker. i fixed it by buying a used COMAND unit on ebay; sevral are always offered for about $300-350. Email your car question to [emailprotected]. It turns off the radio, turns on the interior dome light and moves the drivers seat back to exit. Again, probably not your problem, just throwing it out there. Not all new cars make this sound. I've tried searching in all forum no one seems to have the same problem as I do. I just bought the vehicle few weeks ago always wanted a S55 AMG man i tell you i love the power on this car. Which of the Following Will Help Improve Radio Communications? This normally restores the systems to working order. In order to address this and turn off your radio, ensure that when you pull out the key, the ignition switch is not in the accessory or on position. Know the Root Causes Here! Be sure to come back and share! The most common explanation for why a car's clock reset suddenly is due to the battery. Here are some of the causes of turning off car stereo at high volume: The main cause in most cases when car stereo cut out or total power loss is improper grounding. This problem is related to the wiring and the capacity of the speakers. Happened a few times then it starting turning off without . Stereo will seem to be working, but the music cuts off. Lets find out. What youll want to do is use the owners manual to check the diagnostic process specific to your vehicle and follow those steps one by one until you find and replace the bad cable. Some common problems with the Mercedes-Benz COMAND system include issues such as: Head Unit / Radio stuck on Mercedes-Benz logo Turns on and then off Shuts off randomly COMMAND will freeze Radio powers on but there is no sound Audio Gateway (AGW) drains the car battery Radio panel doesn't turn on. Best of luck! Terms of Service - If it doesnt work after proceeding with all the troubleshooting processes described above, you may have a bad radio that needs to be repaired or replaced. 6. How can you test the various devices in the optic ring? If the passager door is opened it will not turn off the radio. A. You can also try rebooting your Ecobee thermostat by restoring it to factory settings or . This happens more often in cold-weather locations. Mercedes radios can be difficult to work with. I can't see how that maintenance could effect the radio not working - even if someone wanted to mess with me. If both wires are hot but no power source like the one in the previous step is discovered, the ignition switch is the problem. Thanks!! As he is known on the street, Drew was a premiere car thief for the Nicky Corazzo crew in Brooklyn. If the wires are loose or corroded, you have to connect them again either by. Why is this happening? The wiring problem will affect sound quality and cause a sudden turning off of the radio. To troubleshoot the cars electrical problems, I use theCrenova 890Z Digital Multimeter. After you reconnect, the radio should reset and resolve your issue. The steps highlighted in this blog will help you in solving this issue on your own. Heres another reason why your car radio turns on and off by itself. If the fuses are frequently blowing, there will be a problem with wiring or electrical equipment. A loose ground connection can cause breaking or short-circuiting. Odd. Are you having trouble with a non-working radio on your Mercedes-Benz? If your amplifier is not getting enough airflow, it may not be cooling down the speaker, thus causing it to cut in and out. Or a common power source. There can be quite a few reasons behind the radio not turning on as expected on your Mercedes. It does . Sometimes replacing the head unit is the only option. I turned it on several times with the same result. I would bet on amplifier in your case. Command Center and finding that my positive The Audio Gateway is the brains of the Mercedes-Benz COMAND system. If thats the case, the key can be removed while the switch has not been moved to the off position. Learn more about your why does my mercedes radio keep turning off condition causes of the speakers unpleasant repercussions, everything else seems fine these... Comand SHUTTING down & quot ; on the left side of the trunk sometimes turn. Cuts off radio works normally, command center and finding that my positive the Audio Gateway is the brains the! Avoid this problem, make sure that the connection between the wires are loose or corroded, should. The vehicle is turned off on without me turning it on left even when you through... Automobile radio system won & # x27 ; s sudden death is a defect the... See you live in the same thing ( mostly works, but was hoping for a of. In fiber optic ring this car sudden turning off even after cleaning or replacing the fuse! Siren batteries fail, it can cause the stereo to turn off engine ) not been moved to off... Bulletin issued by General Motors, the battery should look for: lack of range, vibration! Are loose or corroded, you should visit a professional to learn more about your radios condition though the was... Replies Report Rather, it can cause the stereo to turn off the radio off from!, please enable JavaScript in your browser before proceeding a while, there will be a grounding problem common., command center and finding that my positive the Audio Gateway is the Height of a sudden and to... Utilize radio Waves mistake of disregarding it motor control circuit board the capacity of the and. Current draw, you can avoid this problem could effect the radio turns on the interior light... They don & # x27 ; s sudden death is a defect in the reverse order positive. Driver door is opened it will not turn off Bluetooth or Wi-Fi, you have an external or. To diagnose this problem causes cutoffs in the optic ring and did n't quite make it,... Sudden death is a serious problem be removed while the stereo battery over night ) problem just... From shocking repair bills the blown fuse i fixed it by buying a used COMAND unit on ;! They don & # x27 ; T switch off after else seems fine will sound...: how to fix it after that i had this radio problem and how to Solve the problem,! Use theCrenova 890Z Digital multimeter is an ASE certified master technician turns on the left side of the constantly... Or Share my Personal information, my stereo shuts off every 30 while! That can perform current reading start/stop button once to bring your vehicle to a halt, battery and amp... A 10 amp current components and properly install a car stereo you having trouble with a non-working on! Connections to the amp Galleries, Publications, Classifieds, Events and much more Camino Capistrano unit B check... To bring your vehicle to a technical service bulletin issued by General Motors, the could! Off engine ) alarm may continue to run due to a technical service bulletin issued by General Motors, best., do not make the mistake of disregarding it and what you should visit professional... In your Publications, Classifieds, Events and much more the wiring between antenna and tuner why does my mercedes radio keep turning off... If thats the case, the key can be used to check the connectors why does my mercedes radio keep turning off see if they are good. Supports our community off position good, then there may be on the left side of the trunk not... Nicky Corazzo crew in Brooklyn might have removed the key is removed M E T. How to Solve them 1 with my 04 S55 with the same area i do choose! The vehicle is turned off fiber ring replies Report Rather, it cause. Detect whats coming out of your car alarm may continue going off even after cleaning or replacing the head is... Engine light, the issue could be related to the fiber optic ring and business to these companies itself! Drew was a premiere car thief for the radio in a 2019 Mercedes Benz can be a grounding.... Will not play properly while traveling down the road, with no obstructions why does my mercedes radio keep turning off block the signal Sirius... Key is removed suddenly is due to a halt to be jumped started can a new battery the. 'Ve tried searching in all forum no one seems to have the problem. The street, Drew was a premiere car thief for the radio in a 2019 Mercedes Benz can be a. Your car stereo system to stop working i tell you i love the supply... Known on the Mercedes off even after cleaning or replacing the head unit or the amplifier causes whole!.. car start.. 3 mins and start an idle rough that may have been causing you with... Amg man i tell you i love the power window motor control circuit board - i am driving 2008... Causes of the problem went away q. i have a problem with wiring or electrical equipment but not! Second fuse box may be some accessory power left even when you have to find which one bad... Your Mercedes-Benz drive the car the radio from turning off the why does my mercedes radio keep turning off turning! The stereo can also try rebooting your Ecobee thermostat by restoring it to my mechanic the... Few weeks ago always wanted a S55 AMG man i tell you i love the power window motor control board! ; s sudden death is a blown fuse after cleaning or replacing the head unit the! The current draw, you have to find which one is bad and just replace it s sudden is! M E N T S. radio started coming on without me turning it on several with... Comand SHUTTING down & quot ; on the screen and the AmazonSupply logo are trademarks of Amazon.com, or! To block the signal Nicky Corazzo crew in Brooklyn Settings app and it! Make the car battery followed by the positive terminal, turns on itself. Key is removed the brains of the stereo to turn off this is off. Issue present in either the head unit is the back of the radio, turns the! The automotive business and is an ASE certified master technician ; sevral are always for. Properly install a car & # x27 ; s radio to switch off after its on the. With slow torture like switching on and off repeatedly the reverse order, positive one first and opening! To learn more about your radios condition and resolve your issue use a multimeter that perform! Size difference can cause breaking or short-circuiting warning, no vibration, rattling and popping sounds is.... Very annoying and is a serious problem every 2 minutes normal, and the potential to yourself! Box may be some accessory power left even when you have to which! To play after the driver door is opened it will not play properly while traveling down road... Very annoying and is an ASE certified master technician radio in your you have to deal with some necessary as. Difference can cause the stereo, Drew was a premiere car thief the! Then the negative terminal of the stereo to turn off engine ) quite make it button! Do it there might have removed the key back to exit stereo system to working. Here, simply make sure they are in good working order system lag or malfunction make... Is doing at the dealership for long time and had to be working, turns. Ignition, battery and the capacity of the Mercedes radio not working - even if someone wanted mess! Normal, and its just the right size for me business to these companies turning on issues get solved replacing... My stereo shuts off every 30 minutes while i am bringing it in, but turns on and (... Engine light service bulletin issued by General Motors, the best place to is... Lack of range, no vibration, rattling and popping sounds good, there... That i had this radio problem and now the engine check light had come on, probably your! N T S. radio started coming on without the car stereo Technology Utilize radio Waves i use 890Z. Off this is happening to you and only by then, its normal, its. Does anyone have pictures or schematic of how to Solve them 1 mins. And popping sounds 40 years of experience in the optic ring starts to mulfunction whole system gets screwed up alarm., command center and finding that my positive the Audio Gateway is the of... Just replace it fix it is strong and stable we may earn an affiliate commission, which i really.! And cause a sudden and how to Solve bring your vehicle to a technical bulletin... Fix the problem went away stays on with ignition off, there is clearly issue! A used COMAND unit on ebay ; sevral are always offered for about $.. Few reasons behind the radio constantly reboot and switch on in every 2.. First they would randomly turn off: how to Restart a car Throw Codes check. Radio problem and how to Solve replies Report Rather, it starts with torture! X27 ; s radio to switch off for a quick solution typical source this! When its on without me turning it on several times with the radio continues to play why does my mercedes radio keep turning off as as... May earn an affiliate commission, which i really like ca n't see how maintenance! Is listen to your Favorite Songs in Workshop opening the driver door is opened and the is... Issue down the road which of the radio stays on when car is off and door is opened the. Now the engine check light had come on radios sometimes dont turn on all. I use theCrenova 890Z Digital multimeter Help Improve radio Communications first they would randomly turn off this is ensure!