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Could also be the pushbutton unit (PBU) in the dash or even the blower motor but I agree, check the fuses first. In addition to the strip fuse (or fuse 12 if you have an older '87 w/o the upgrade), the PBU also needs fuse 7 to be good. Remember to do more than just look at the fuses – actually remove them, make sure they don't fall apart in your hands!
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"Buster" in the '95
Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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