A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

How to replace MIL bulb

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Old Dec 4, 2010 | 08:16 AM
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Default How to replace MIL bulb

I ran output test with VAGcom, and MIL light does not come on.
I am guessing the bulb is bad.

I could not find anything in Bentley that shows how to replace bulb.

Are there detailed instructions out there?
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Old Dec 4, 2010 | 08:50 AM
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On my '96 the MIL is separate from the other dash lamps, wired into the harness. It plugs into the back of the instrument panel assembly. You remove the trim directly below the instruments by pulling it back to disengage. Under are a couple of screws. Remove these and the instrument assembly can be pulled out. It helps to have the steering wheel all the way out and down. There's just enough slack in the harness to get at the MIL socket, which turns to remove like the other dash lights. Test the bulb for resistance before changing it.
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Old Dec 4, 2010 | 11:53 AM
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Default MIL light bulb and "door chime"

Originally Posted by turbo510
On my '96 the MIL is separate from the other dash lamps, wired into the harness. It plugs into the back of the instrument panel assembly. You remove the trim directly below the instruments by pulling it back to disengage. Under are a couple of screws. Remove these and the instrument assembly can be pulled out. It helps to have the steering wheel all the way out and down. There's just enough slack in the harness to get at the MIL socket, which turns to remove like the other dash lights. Test the bulb for resistance before changing it.
Thanks turbo150. That helps quite a bit. I will get to it next time at the car (and no other pressing troubleshooting action on the list (currently, no spark issue).

While digging in there: I also don't have the "chime" (there actually is a separate output test line in VAGcom for it); if that is anywhere close to the dash section, I would like to tackle it while in there.

Let me know.
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