View Full Version : "Ghost" warning msgs on OBC
myblack540i
11-04-2004, 09:37 AM
My car is a 1995 540ia. Lately I've been getting some "ghost" warning messages on my OBC. I say ghost warnings because they pop up and the problem isn't really happening.
Example: "Brake LT Circuit" - Brake lights are operating normally. "Tail Light" - All tail lights working fine.
The warning message will come on, but will reset itself if I shut the car off and restart it. Is this an indicator of an impending electronic meltdown? Or just a minor annoyance?
Any similar experiences?
Thanks!
Todd
billb
11-04-2004, 09:51 AM
My car is a 1995 540ia. Lately I've been getting some "ghost" warning messages on my OBC. I say ghost warnings because they pop up and the problem isn't really happening.
Example: "Brake LT Circuit" - Brake lights are operating normally. "Tail Light" - All tail lights working fine.
The warning message will come on, but will reset itself if I shut the car off and restart it. Is this an indicator of an impending electronic meltdown? Or just a minor annoyance?
Any similar experiences?
Thanks!
Todd
Check these links.
brake light switch (http://www.bmwe34.net/e34main/Maintenance/Electrical/brake_switch.htm)
quick fixes (http://www.bmwe34.net/e34main/trouble/quick_fix.htm)
Your tail lights could have corrosion on the contacts, or could not be BMW silver bases. Standard brass base bulbs can give you this problem.
compmore
12-22-2006, 06:42 AM
i have been getting the same warnings on my 540i as soon as i turn the headlights on. bmw guys say it's due to faulty resistance in the back headlight caps.have paid and ordered these but won't see for about 4 weeks
if hella lights they are part no.63121378333
Sam-Son
12-22-2006, 03:28 PM
Happens all the time. Also I get a coolant level warning and I know there's enough coolant
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