I have a 1991 300D and I just notice that the right and center vents have a little light that illuminates the regulator wheel. How do you replace the bulb in the air vent. This is the wheel that you turn to close the vent.
Thanks,
ARI

You have to take off the grille for the speaker and then there are 2 screws that hold the top. Next there are 4 clips on the inside toward the front that have to be held down to pull it out.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

The entire top of the dash has to come off to get the bulb out in the air-vent?
Thanks!

Try tapping or gently banging the vent control wheels, this may bring the lights back to life, otherwise do as advised. This worked on my '89 300E over a year ago. Still going strong..

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Jeff L
1987 300e
1989 300e
1987 BMW 325

Thanks!!!