1992 500SL. The fan for the climate control system has stopped working. There were no apparent symptoms prior to the failure. It simply failed to work one morning. Possible causes/ cures? Thanks.
JR |
I would suspect the electric blower regulator or fuse 1 in the auxilary fuse holderm right behind the brake booster.
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I have replaced no less than 10 blower regulators this month...We sell them in the partsshop if you wish to save money. The shop will charge one hour, and you should be able to do it in that amount of time. It is located under the black plastic panel just below the windscreen under the hood. 7 phillips head screws hold down the panel and either 2 phillips or 2 torx bolts hold down the regulator. (under the air filter)
------------------ 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 |
It is not the fuse. Is there a way to test the regulator before ordering a new one? Thanks,
JR |
Yes, You have to remove the outer covering that is under the hood just below
the windshield. I has 6-7 Phillips screws and a vacuum line or two holding it in place. Take out the dust filter and the blower will be below. Pull the blue plug back enough to see bare metal, but not so loose that you loose contact. Turn on the key and the blower to max. Back outside the car listen closely to the sound of the blower. Now ground the pin that is exposed to the chassis of the blower with a hefty wire. If the blower speed increases, the regulator is faulty. This is the quick and easy way to check and it assumes that the input to the regulator is good. (I have not ever seen the input faulty.) |
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