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Hi need help this problem started a few nights ago Idling in a parking lot and heard my fan kick on wide open , looked down and all these lights came on and wouldn’t go off . Car drove fine home but couldn’t control headlights or blinkers . Just happened again on the way to work
none of these dash lights were on previously.
a few issues i noticed right off hand were
High beam indicator on dash and i have no headlight control
Emergency brake indicator
Airbag indicator
Not able to use blinker
Heated seats not responding
Front right srs malfunction dash light on
engine Fan running wide open
Temp gauge not reading
after getting to work i turned my car off and exterior lights stayed on and i tried to start the car and it gave me the esp malfunction indicator . Any help would be great
How is your battery or the alternator? Did you check the voltage on the battery?
i haven’t checked anything yet i kindve brushed it off the first time and this morning i was heading to work . I’m going to go at lunch and have them tested
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
EVERY Mercedes owner should have the proper scan tool, for a bunch of reasons. These cars are sophisticated electronically and become more temperamental as they age. One trip to the dealer to diagnose a problem will pay for the scanner. Sometimes the "fix" is simply to clear a code. Most times, even after a repair (e.g., new battery) you may need to clear codes.
So just got ready to go have alternator and battery tested . Get in the car all the lights came on but car didn’t even attempt to turn over , put jumper cables on it and it started immediately , no lights on the dash anymore , drive to parts house they tested battery alternator starter etc and everything came back good . Car started fine leaving parts house and no lights on dash .
Do you have just one battery in the engine bay or do you have a second battery in the trunk?
Could be a grounding issue. Battery cable issue, corrosion. Maybe a wiring issue at the front SAM.
So many symptoms the car should be scanned to lead you in the right direction. Will just be guessing without it.
i don’t have a second battery that I’ve ever seen . I’m seeing some reports of similar but not exact issues with the prefuse box f32 . Is that what you mean by the front Sam? I’m new to Mercedes so not very familiar with some of the terms
The front SAM (signal Acquisition Module ) is the fuse box in the drivers side engine bay. The photo below is not of your specific Mercedes but shows where its located, the fuse box diagram is accurate.
i have seen posts from people where water got in that area and messed everything up, they ended up replacing it. Im not saying thats what happened in your case. But never know. Was it raining? Have you have any work done to the lately?
Try checking in there, use a flash light to inspect all the fuses to see if one may be blown.
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