E36 on board computer

[tricky69]

I have a E36 1998 M3 if that makes i difference and am having a problem with my on board computer. I keeps saying ' brake light circuit cut - see instruction manual ' I have looked in the manual and can't find anything. All lights seem to be working fine, so i don't know what to do.. It is really annoying when it comes up, is there any way to stop it ???

Thanks

[weeks530bwn]

are your brake lights working?
if not your brake light switch needs replacing.
or, sometimes when you start your car it says that, then you tap your brakes and it goes off,
or try reseeting your ecu.

hope that helps

[tricky69]

weeks530bwn said:

are your brake lights working?
if not your brake light switch needs replacing.
or, sometimes when you start your car it says that, then you tap your brakes and it goes off,
or try reseeting your ecu.

hope that helps

Yeah brkae lights work, how do i re set the ecu ?

[Gad-Westy]

Mine does this from time to time as well. It stopped for ages then happened again the other day. All brake lights working fine.

[steil]

Common problem - see link below - on my car it's the third brake light bulb holder that keeps coming loose - especially over speed bumps.

http://www.geocities.com/e36rulz/DIY.html

http://www.geocities.com/karlkarlb/brakeswitch.htm...

http://www.pelicanparts.com/bmw/techarticles/E36-B...

[m3evo2]

and I have heard to make sure BMW (OEM) bulbs are used as the slightest difference in voltage can cause this problem.