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Light bulb out indicator on with brakes. C70 2000

posted by  someone claiming to be Butchman on  Wed Nov 21 14:46 CST 2007 [RELATED]

My '00 C70's 'light out' idiot light comes on when I depress the brake pedal. I have replaced the brake light bulbs 3x. I even had the dealer replace them. No fix yet. Anyone have any ideas as to what the problem could be?
Thanks.
Butchman








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Light bulb out indicator on with brakes. C70 2000

posted by  tripleb on  Wed Nov 21 17:17 CST 2007
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last visit: Mon Jan 19 09:41 CST 2009
[RELATED]

There is a bulb failure relay that may be bad.

Are the bulb illuminating with the same level of intensity?

If not, maybe a bad ground circuit to one of the bulbs or a bad connection in the bulb socket.

B








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Light bulb out indicator on with brakes. C70 2000

posted by  someone claiming to be Butchman on  Thu Nov 22 06:55 CST 2007 [RELATED]

The dash 'light out' lites up when the brake pedal is depressed. Wiring and sockets ahve been inspected at tail lights.
Where is this 'relay' located that you mentioned?
Any other ideas?

Thanks.

Butchman








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Light bulb out indicator on with brakes. C70 2000

posted by  ShadeTek on  Fri Nov 23 02:55 CST 2007
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last visit: Tue Sep 17 10:26 CST 2013
[RELATED]

If you have replaced any one of the brake bulbs at any point it can cause this problem. The way the lamp fail works is to measure the current difference through the bulbs. If any of the three bulbs are different due to it being a different spec, it will cause the fail lamp to come on.
--
Tek








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Light bulb out indicator on with brakes. C70 2000

posted by  someone claiming to be Butchman on  Fri Nov 23 12:42 CST 2007 [RELATED]

Nope, bulbs were replaced in pairs. Where is the relay unit located?
Thanks.
Butchman







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