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cw1115
01-20-2015, 02:19 PM
Does any one what terminal supplies power to the LCM for headlights, high beams, flash to pass and cornering lamps?

I had an external relay dangling from my LCM replacing the faulty relay on the board. Been all good for 2 years. Than tail light relay started acting up. I reached down to tap on the LCM and shorted one of the leads against ground and lost headlights ect. I was able to run power to the relay direct and everything worked, except of course intermittent tail lights.
Today the dealer put in a new LCM under warranty. Great. no head lights and such. So apparently I smoked a power wire to the LCM someplace. I can not find a bad fuse.

Any ideas?

Thank you

fastblackmerc
01-20-2015, 02:46 PM
Does any one what terminal supplies power to the LCM for headlights, high beams, flash to pass and cornering lamps?

I had an external relay dangling from my LCM replacing the faulty relay on the board. Been all good for 2 years. Than tail light relay started acting up. I reached down to tap on the LCM and shorted one of the leads against ground and lost headlights ect. I was able to run power to the relay direct and everything worked, except of course intermittent tail lights.
Today the dealer put in a new LCM under warranty. Great. no head lights and such. So apparently I smoked a power wire to the LCM someplace. I can not find a bad fuse.

Any ideas?

Thank you
Sounds like a crappy job with the installed external relay!

So the dealership let the car go out with no headlights????

Check the fuse box, (in order of importance) #24, #26, #6, #12, #15, #19, #23, & #27

cw1115
01-20-2015, 03:55 PM
Yes. Guilty of not taping it up well and the cheap ass tape dried out in Florida heat.
Yep, I heard the tech tell the service writer everything was good. I checked before I drove off, but wasn't going to pay to have them lol at it. And I have to look for burned out fuse tomorrow. I was hoping it was the 50A under the hood, but no.

cw1115
01-22-2015, 02:01 PM
Problem solved. I guess I'm an idiot, but I checked all the fuses visually and they looked good. I went back today and checked them again with a meter and fuse 27 was bad. Everything works perfect now, thanks for all your help