Question about 2007 Mercedes-Benz G500

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Electrical gremlins I have a 2002 G500 and of course having electrical issues. I have been reading and found someone mentioning that most of there electrical issues have been due to the alternator with a faulty voltage regulator (which produces power surges that the electrical system can't handle). Has anyone else here heard of this? If so what is the correct voltage regulator to get? I'm not a electrical guru and plus I don't have the time to trouble shoot all these issues. I'm also tired of going to the dealer fixing problems that just happen all over again since they don't know the root cause of it.

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This is covered by a recall. Your dealer should be able to replace it Free-of-Charge. If they don't know what you are talking about call 1-800-FOR-MERC and talk with them.

Posted on May 14, 2008

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Multi faceted electrical gremlin... Headlights (almost) constantly on. Once you turn the on they don't turn off, sometimes after disconnecting the battery they will turn off but not usually. Also, dome...


I love gremlins. ok first thing first. the headlights, you will see a fuse box in the engine compartment near the battery. remove the cover and you will find fuses and relays. if there is no label showing you which is which (look under the lid you just took off), feel them. the one very very hot is the one that controls the headlights (if they are stuck on a the time you do that.) replace that. it should sort out your headlight issue and possibly the interior lights.
now on to the interior lights. you haven't mentioned a blown fuse, i presume you did check them. same thing. check all the relays for one that is very hot, your door would be open anyways so the interior lights will be on at the time. replace that relay.
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1 Answer

My 2002 chevy venture Van has a gremlin! After I turn off the engine, the headlights will come back on at different times. I have to unplug the fuse every time I stop. Any suggestions?


Check the connections at the battery. These are very prone to corrosion and causing "gremlins" to appear. If the connections are not snug and clean you will get slow cranking, electrical problems, and poor charging on the battery. You can use baking soda and water with a wire brush. Please protect your eyes. You will need either an 8mm, 5/16" wrench or if the bolt is worn, use channel lock pliers on the round part of the bolt. Let me know.

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1 Answer

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Try cleaning both battery connectors--both cable ends and posts with a common internal/external brush set available at auto supply dealers. Apply a corrosion inhibitor grease (from the same dealers) liberally to insides and outsides of posts and cable ends. Check the far ends of both cables for tightness and lack of corrosion.

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1 Answer

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I am a newby owner of an '88 and pretty mechanically inclined but am learning Saab's have certain electrical issues and on many of the forums I have read, call them Saab Electrical Gremlins. You know how some tail light bulbs have 2 filaments or one? Well, you need to go all around to your exterior lights and make sure the right bulb s there. In a fix someone may have placed a double filament bulb on one side where it should be one, like the tail lights/brake lights. For some reason the wrong bulb in wrong place (although bulb fits, wrong still) can even cause a non-starting situation. Also, while going around, take some steel wool and abraid the bottoms of bulbs and the metal it makes contact with...hope this helps.
Peace

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1 Answer

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It may be expensive to have someone fix. Electrical gremlins can be a pain to find. If you could locate the issue then it might not cost as much to get fixed. Start by looking at all the wiring you can for any rubbing or bare wires. Something is grounding and draining the battery. I've seen a wiring harness rub a bracket on the back of an engine until it shorted, causing all sorts of issues on a civic.

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1 Answer

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turn head light on and try to start car if they dim way down replace battery or connect a volt meter to bat check voltage while cranking. it must be 12 volts or higher.

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2 Answers

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mine had the same problem, check into a new computer for it..more or less the ECM part...i had to replace all the computer in mine and seems to have fixed it. does it also have other quarkie electrical things..like gremlins...if so it the computer. Good luck

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1 Answer

Electrical Issue


might be a body control module

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