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Old 01-14-2016, 05:24 AM   #1
Registered User
Join Date: Jan 2016
Location: Sweden
Posts: 1
My Ride: BMW E46 330Ci
Electrical gremlings, DSC+Brake, Xenon, LCM Stereo

Long time lurker, first post

Here's the deal, were cruising my 330Ci one day when suddenly the DSC + Brake lamps lighted up yellow (the icon, not the brake text) been driving for about 2km, first thought was a speed sensor, the next day driving my temp and tank gauges along with rpm gauge went crazy and indicated about 30-50% more then usual (3k rpm idle yet i can clearly hear the enginge running normal, tank showed 3/4 yet 16km to empy tank on navi display and temp gauge went to red zone) i also noticed my left xenon wasn't working and cluster notices me of this. I removed battery for 2 hours but problem was still there

I let the car sit over night and checked the voltage next day, 11.6 with car off and 14.4 with engine running, bought a new battery and it now stays at 12.6-12.7 as it should. The alternator have been replace to a new one for about 3k miles ago(30 000km)

Heres where it gets funny, ive had AE installed for about 3 years and always use my LCswitch to turn headlights of to only have AE on, ive noticed when the headlights are on that the stereo/speakers behave really strange. its like it randomly shuts of speakers on right side of the car every few seconds and when i switch over to only using the AE the problem goes away..

What I've done this far:
Checked ground points on battery and the one leading to engine bay from baggage
Checked DME which was clean (oil can actually climp up to this place)
OBC with bluetooth reader & torque,which didnt give anything since it only read engine codes

The DSC + Brake light goes on after about 2-7 km of driving, and goes away when i restart engine only to light up after some driving again

Im soon to order a INPA tool to get the DSC codes read but meanwhile, what do you recommend me to check for now?

Since all these problems came kinda together im thinking about some electrical gremling somewhere, maby a bad ground point? also to note is that its been about -5*c here which is the coldest in about 10 months when my problems occured. I've done atleast 10 hours of researching on the web but cant find any1 with all these problems together.

Thanks for reading,hope to find some1 who can help me!

Edit: Adding more info: calibrated the wheels and steering wheel this summer which leads me to think steering angle sensor is ok since the problem came 2 weeks ago, the brake fluid was changed 1 years ago (soon going to change again, 2 year intervall) container is full, the system was also bleed (made by really good bmw indy) all brakepads are fine (changed all last year + brake pad sensors) don't know if this helps but trying to add as much info as possible

Last edited by dentar; 01-14-2016 at 06:10 AM.
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