Location of A/C compressor clutch relay

Tiny
ARY90
  • MEMBER
  • 2008 VOLKSWAGEN PASSAT
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Don't have owner's manual and while researching online found it's the relay marked 384 but there is no relay marked with that number in the relay box. Thanks!
Saturday, December 21st, 2019 AT 9:33 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I don't see an actual compressor relay which means your vehicle is not equipped with a traditional relay.

Your vehicle has a climate control module and the compressor regulator valve that the control module controls. This valve regulates the pressure by cycling the clutch on and off.

If your compressor is not coming on then we need to suspect the control module. Does the AC button on the control panel light up? If so, go and check for power at the compressor. If you don't have power then the module is most likely the issue.
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Sunday, December 22nd, 2019 AT 8:54 AM

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