I need to know what electrical relay or fuse would prevent the compressor from engaging

HUGOTANTRIC7

MEMBER
2003 MERCEDES BENZ S430
100 MILES

I know the compressor is good the ac just went out tthe comprerssor isnt engaging but its not locked,
ive disconnected and reconeected the battery ive looked at everything, I the diagnist said it wasnt a compressor problem just a relay pr fuse issue. Very frustrated

4 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Run power directly to the compressor to see if the clutch locks. If it doesn't you may need to replace it. Also, make sure it is fully charged. Low freon will prevent the compressor from locking in.

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Tuesday, June 11th, 2013 AT 7:18 PM

HUGOTANTRIC7

MEMBER
3 POSTS

How do I check if freon is lo? And also I'm the singer of a rock band called tantric nowhere so I have bare minimum tools.

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Tuesday, June 11th, 2013 AT 7:31 PM

HUGOTANTRIC7

MEMBER
3 POSTS

If u can help solve this ill donate whatever

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Tuesday, June 11th, 2013 AT 7:32 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

I am so sorry I never got back to you. It didn't show up in my email till now. Have you gotten the problem fixed? As far as the freon, you need to check pressure in the system. You need special tools to do it.

Glad you're in a band. I have been since I was 12. Lol

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Thursday, August 8th, 2013 AT 7:05 PM