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AudiDoc
AudiDoc, Independent Audi Shop Owner
Category: Audi
Satisfied Customers: 1695
Experience:  I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
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Where is the air conditioning control relay on 2007 audi a6

Customer Question

where is the air conditioning control relay on 2007 audi a6 3.2L and the pressure swithch
Submitted: 12 months ago.
Category: Audi
Expert:  Wolfgang replied 12 months ago.

Hello there I'm Wolfgang. I do need a vin # ***** get factory repair info to assist. Thanks

Customer: replied 12 months ago.
WAUAH74F17N116077
Expert:  Wolfgang replied 12 months ago.

ok the system is not the usual pressure switch style due to automatic climate control . and there is no comressor clutch. a scan tool will be needed like vag com or a professional scan tool to see if the compressor is locked out due to a malfunction. that code will be stored and needs to be cleared in order to try to operate the a/c system. do you have a VAG COM scan tool?

Customer: replied 12 months ago.
No but I was thinking of ordering it from ros-tech
Customer: replied 12 months ago.
The only thing after we put the new compressor thinking that was it we had it scanned from a mechanic that only deals with Audi's and he said there were no codes
Expert:  Wolfgang replied 12 months ago.

what was wrong with the original compressor?

Customer: replied 12 months ago.
I am guessing nothing
Customer: replied 12 months ago.
But they swore up and down the compressor must be the problem
Expert:  Wolfgang replied 12 months ago.

They who?

Customer: replied 12 months ago.
A mechanic I took it to that said he had worked on audi's and vw
Expert:  Wolfgang replied 12 months ago.

the new compressor is from the audi dealer?

Expert:  Wolfgang replied 12 months ago.

what is the climate temp in your area?

Customer: replied 12 months ago.
No but it is a denso brand
The temp here has been hovering around 70-79 Fahrenheit
Customer: replied 12 months ago.
I order it from an online auto parts that deals in Audi parts and it was completely seald in the box labeled new not a refurbished one
Expert:  Wolfgang replied 12 months ago.

ok did you install the compressor or a shop and charged it by self or shop with a machine?

Customer: replied 12 months ago.
Do you know where the ac master control relay
Customer: replied 12 months ago.
The shop did and they charged it
Expert:  Wolfgang replied 11 months ago.

there is no master relay on this . the facility that diagnosed this incorrectly there has to be a fault code stored if the compressor does not activate!!! does your ambient temp sensor read correctly in the dash ?

Customer: replied 11 months ago.
it does
Expert:  Wolfgang replied 11 months ago.

Well at this stage need to start at square one and check fuses to see if one of them are blown. Use a volt meter with the car running and check for voltage at both sides of the fuse and make sure it has battery voltage

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