5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
hiya i've finally bought my self the car of my dreams a 1994 525i auto but its got a fault with the computor which tells me i've got bulbs out its comes up with brake circuit ct - so i've ordered a brake light switch which seems to be a common thing but when ever i put the lights on it goes throu telling me that pretty much every bulb is out ? any ideas ?:
before you buy ANYthing, check how the bulbs are seated, you lock in the tabs and the twist to make contact with the circuit. When these bulbs carriages get older and oxidize, the connection can become loose and unreliable. If your bulbs are good, and seated properly in the carriage, turn car on, put a brick on the brake pedal and then fiddle with the rotation on the bulb carriage, if you can get it to work, you'll need to replace those, but that should get you a factory fit and the car won't bounce the brake lights out of contact.
Went through this with my '92 525i. This kind of pseudo-short will also play havoc with the brake-light switch warnings.
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