Is there a blower motor relay I should check?

10

Asked by May 29, 2014 at 09:33 PM about the 2002 Mercedes-Benz SLK-Class SLK 320

Question type: Maintenance & Repair

My a/c was working intermittently, so I replaced cabin air filter and removed debris,
leaves from blower motor...no change. I then got a replacement blower motor resistor
and a/c worked on all settings, but when I remove key from ignition the fan keeps
blowing. I was sent another resistor, same results. Is there a relay somewhere that might
be stuck on causing this, or are both resistors likely bad?

6 Answers

9,945

There is a relay for your ac blower,could be bad,making it not turn off,points may be stuck.

7 of 7 people found this helpful.
10

Thanks. Any idea where the relay might be located? I'm guessing it is in the vicinity of the blower motor?

1 of 1 people found this helpful.
9,945

Should be under hood in fuse panel

3 of 3 people found this helpful.
9,945

If you dont find it there could be in trunk

3 of 3 people found this helpful.
10

I forgot to mention, when I put the old resistor back in the a/c is still intermittent, but it does turn off as expected when I remove key from ignition.

10

imyt19, did you resolve this issue? Was it a relay? I have similar issue with C350 2006. Replaced motor and resistor and the fan runs at high. No speed control. Thanks,

1 of 1 people found this helpful.

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