To switch on/off: press button. If you’ve never disconnected a battery before, then it's a good idea to make sure that you disconnect the negative cable instead of the positive cable to avoid even the possibility of a short circuit. 2007 Mercedes-Benz R500 / Why my headlight won't go... Why my headlight won't go off after i turn off my car. If a bad headlight relay is a reason that your headlights won't turn off, then the fix there is also to just replace the relay. Posted by Anonymous on Mar 14, 2013. If you can find another relay in your car that has the same part number as your headlight relay, you can actually just remove your headlight relay, swap it for the identical one from a different circuit, and see if your headlights turn off normally. Christine Baker is a marketing consultant with experience working for a variety of clients. my right headlight only. If a bad headlight relay is a reason that your headlights won't turn off, then the fix there is also to just replace the relay. Mercedes-Benz 2008 c300 right Tail lights wont turn off - Mercedes-Benz C-Class question. I have a 2004 LC and the headlights don't turn off in the "auto" mode when the ignition is turned off and the car is locked. Мапас / Uncategorized / 2008 mercedes cls550 hazard lights won't turn off; 2008 mercedes cls550 hazard lights won't turn off. OK, I went outside to move my car after my wife got home. But headlights can also fail in the other direction. This just turns on the offside lights when activated. 1997 Mercedes-Benz S420. Get the Latest Tech News Delivered Every Day, Lifewire uses cookies to provide you with a great user experience. Last but not least, the issue with this Mercedes was the engine not turning off when the key was removed from the ignition. The easiest way to keep the battery from dying is to disconnect it. Faulty High Beam Relay. Therefore, it's reco… 3. For instance, some cars are designed so that if the engine is shut off while the headlights are on, they will remain on for a specific amount of time. I’m with BMW of North America, LLC. But before you do that, there are a handful of things that just about anyone can check at home with some basic tools and a methodical process. We unhooked switch again and lights still on with the headlight switch out. They do not turn off until the battery dies! Terms — Far from a fail-safe, headlights that won't turn off, no matter what you do, can quickly drain your battery and leave you stranded. In the event that swapping relays doesn't work, your problem may be a bad headlight switch, multifunction switch, or light sensor, and the diagnostic procedure will be more complex. You also won’t be able to go through emissions testing in places where they read the codes as part of the test since it will show that the battery was disconnected. My headlights on my 2001 Ford Explorer are now continuously on while the switch is off and the ignition is off with the keys out. Even though headlight systems usually aren't too complicated, there are situations where you may have to take your car to a professional to fix headlights that won't turn off. This is a video tutorial on how to stop fog lights flashing on your Mercedes Benz. It’s important to note that disconnecting the battery can have some consequences. Q: Headlights won't go off unless I unhook battery. This video will show you how to enable or disable the exterior surround lighting, and interior lighting delay. He also ghostwrites articles for numerous major trade publications. My car has an automatic transmission. I have removed the switch and even with it disconnected the lights are still on. Driver side headlight won't turn off. Why Do Headlights Flicker When Listening to Music? If you have one of those cars, that system may have failed, and you might want to try shutting the headlights off before turning the engine off to see if that helps. Unclip or unfasten the cover to access the bulb(s) inside. They might be blown. This is a little more complicated than disconnecting the battery because you will have to locate the correct fuse panel and then figure out which fuse or relay to pull. Your headlights should now be disconnected. I hope this helped you out, if so let me know by pressing the helpful button. After disconnecting the negative battery cable, make sure to move it away from the battery so that it doesn't get nudged or bumped and come back into contact with the negative battery terminal. I tried messing with the switch, and when the headlights turn on, it won't even let you turn the lights off with the switch, after about 3 minutes it will let you turn them off. In that case, you can try setting the parking brake to see if that shuts the headlights off, as setting the parking brake typically disables daytime running lights. If that system fails, it may cause the headlights to remain on. You may be able to identify the problem by simply removing the component in question and checking for physical damage, but there won't always be physical indicators. Were on before i turned on the offside lights when activated leaves the headlights will off... Mercedes-Benz 2008 c300 right Tail lights wont turn off until the battery won ’ t die from.... Standard NA light switch '' fuse then noticed the dash lights were on i! 2008 c300 right Tail lights wont turn off my car has 90000 miles remove... The head lights took that long to turn off, even with it disconnected the went. T die dasboard lights wo n't go off after either 15, 30, 45 or seconds... Tacomas ( 1995-2004 ) ' started by 186000mps, Apr 13, 2013 and unplugged the control... 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