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Old 10-07-2013, 04:01 PM
JordaanDMC-12's Avatar
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Burned out relay?

Hey all, have a quick question.. on my 91 300E I've had my windshield washer and rear headrest folding magically stop working, when they were worked just fine last time I used them.

I checked the fuse and it's good, when I push the rear head rest fold down button, I do hear a noise, kind of like a "click" but nothing happens.. I'm thinking maybe a relay? Where should I start?

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Old 10-09-2013, 04:52 AM
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check around the fuse box to see if a list for relay is there. Not sure though, on my w201 the seat relays are located under the seats. I had a problem with my driver headrest not working, I would hear a click every time I pressed the switch to move it but nothing happened. I ended up teaching the click sound under the driver seat which actually turned out to be the relay (opening or closing) so it was functioning correctly, I ended up having to replace the motor to the headrest.
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Old 10-15-2013, 11:38 PM
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Quote:
Originally Posted by lsmalley View Post
check around the fuse box to see if a list for relay is there. Not sure though, on my w201 the seat relays are located under the seats. I had a problem with my driver headrest not working, I would hear a click every time I pressed the switch to move it but nothing happened. I ended up teaching the click sound under the driver seat which actually turned out to be the relay (opening or closing) so it was functioning correctly, I ended up having to replace the motor to the headrest.
Thanks for the reply, I checked and there isn't anything marked as far as I could tell going to keep sniffing around! It's funny you mention the headrests because I'm going to have to replace those as well...
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Old 10-16-2013, 12:17 AM
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IF you have aluminum fuses Id sure start by replacing them with copper too.
Thats a very low load relay circuit. Low odds on it failing
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Old 10-16-2013, 07:54 AM
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As a matter of course, replacing the fuses is not a bad suggestion, but you need to get to the seat release and see if it is getting voltage. Do you have a wiring diagram and/or service CD?

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