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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 11-11-2007, 09:22 PM
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brake light issue

Hi all.

Every now and then, more often lately, my check light comes on. Sure enough I look at the light panel above ther rear view mirror and the brake light is bright. So I check my brake lights. They all work. I hit the check button and the alarm light is still on. I turn off the car and turn it back on, the alarm light goes out. Drive a little while down the road and it will come back on.

Is this common?

Something I can check on for a fix?

Any and all advice, suggestions, and comments welcome.

Oh, one more thing. I am still looking for a good cluster.

Thanks very much.
Richard.
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#2 (permalink) Old 11-11-2007, 09:46 PM
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Next time it happens when you get somewhere have a friend go out and check your lights, it may be a bulb on its way out taht works when it wants to...
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#3 (permalink) Old 11-11-2007, 10:11 PM
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what year, e36, e46????

Brake Warning Light Problems
Brake warning light problems are fairly common. Sometimes the check control system will erroneously display information that a brake light bulb is out. The warning circuit checks the resistance in the tail light circuit and illuminates the warning light if it senses anything out of spec. We recommend starting off by checking the bulbs. Make sure they are the correct voltage and size. Then check the bulb sockets for any corrosion or buildup. If these things check out but you're still having problems then you may want to try Original BMW bulbs. The resistance of some aftermarket bulbs may not meet the tight tolerances that your check control system requires. The BMW bulbs seem to work better. If that doesn't work check all the wiring connections. Also be aware that some cars (5 series 89-95, 7 series 88-94) use a bulb control module that when it fails can cause the warning lights to come on erroneously and/or turn off the lights randomly. Also check the brake light switch behind the brake pedal!!!
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#4 (permalink) Old 11-12-2007, 11:49 AM
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Make sure you have nickle, silver in color, base bulbs. The brass base bulbs can trip the check control even if the bulb works.
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