Question about 2000 Volkswagen Golf

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I need to replace the relay for the air conditioning compressor clutch. The relay panel is above the driver's left knee. I can't determine which is the correct relay. There is no guide.

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  • sherwoodjr Jul 12, 2010

    The local VW dealer did identify an A/C relay. Also, one comes up on Autozone web-site. But he said the auxiliary fan control unit, mounted underneath the battery, usually is what fails. They rarely have to replace the relay.



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Of course there is no guide for relays, only most of the fuses. The control module is inside the left fender wheel well, above the horn. There is no AC relay. Using a Bentley's factory manual will guide you with it's electrical diagram.

Posted on Jul 11, 2010

  • Ed Paje Jul 12, 2010

    I don't see an A/C relay in my book's electrical diagram for the A/C compressor. I checked the A/C section does not indicate any specific reley for the clutch. The coolant fan control module (lower left side of engine compartment near radiator). Controls all A/C clutch functions and A/C related radiator fan functions.

    An A/C cut-out thermal switch (F163) located in a T in the coolant line, between the radiator and engine cylinder head.

    • Switches off A/C clutch (N25) at excessively high temperature.

    • Switches clutch off at 119*C (246*F)

    • Switches clutch back on at 112*C (249*)
    So that sums it up for the relay(s) which I couldn't find. This should have a higher rating from my two thumbs, thank you by the way. Anything else, just let me know.



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My 2001 buick century blows warm air on drivers side and cold air on passenger side could the problem be that the flapper is stuck.

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Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
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Remove the left air temperature actuator.

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see this steps and think with clearly and logically NOT feared. God bless you
checkmark.gif Start with the compressor. Does it engage when you turn on the A/C?
If so, the compressor is working and the A/C system probably contains enough refrigerant to make cold air, so the problem is inside the HVAC unit. Replace the motor that controls the blend air door (this is a difficult job and best left to a professional since it involves tearing apart the HVAC unit -- about an 8 to 10 hour job!).
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