Question about 2004 Volkswagen Passat

1 Answer

I have a 2004 Volkswagon Passat with the 1.8T engine. The air conditioner is not working. I have checked the line pressure(s) and have around 75 psig on both the suction and discharge lines (appears the pressure has equalized across the compressor). I have checked voltage at the compressor connection and there is voltage going to the compressor. I have also checked continuity and the ground is good as well. I cannot locate a suction pressure switch to see if it is bad or not. Also, I have found the relay panel but cannot tell which relay controls the a/c. Any help would be appreciated.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 661 Answers

Need more information. Saying it does not work is not very informative. Does the compressor just not cool? is it cycling or not cycling. If you find it is not cycling but the fuses are ok. Check the clutch for continuity. It could be that the windings are burned out.

Posted on Jul 28, 2010

  • tpustka Jul 28, 2010

    The clutch will not engage at all. The blower is working (blowing ambient temperature air). There only seems to be one wire at the compressor that mhas voltage. I read where some models only have one wire and to check continuity check the center of the compressor housing to a good ground. I have done this and the ground appears to be good.

  • Bryan Fullerton
    Bryan Fullerton Jul 28, 2010

    1. you have checked that it has voltage with the AC switch on and has no voltage with the AC switch off?

    2. What is the gap between the clutch faces?

    3. Just because something has voltage does not mean that it has the ability to carry the amps.

    Here are some of the troubleshooting steps I would take. First I would check the clutch coil for continuity. Then I would check it for operation. engine off key on I would run a line from the battery to the clutch coil. just tap the two connections together and the clutch should engage. If it doesnt then doublecheck that the engine has a good ground clear to the clutch and try it again. if it still doesnt work then the clutch coil is bad.

    If the clutch tests good then it is time to test switches and relays to the clutch to make sure neither have gotten so burned that they cant carry the current required. It takes quite a bit of electricity to keep that clutch engaged.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Air conditioner suddenly stopped working on my 2003 passat wagon glx 4 motion

Possibly. Check for the proper amount of freon in the system. There are pressure sensing switches that stop the compressor as a safety measure.

Jul 24, 2014 | 2003 Volkswagen Passat

1 Answer

2003 Volkswagon Passat - how do I fix "Stop Engine Now" problem?

Other than the stop engine now, is it running ok??

Mar 06, 2018 | 2003 Volkswagen Passat

1 Answer

Volkswagon passat tdi engine problems

hello : my proplem is began after i drive my passat 5 kilometer the EPC yellow light is appear and i dont know what that mean . thanks foer your help .. my passat 2003 model petrol . 2000 cc .
Rami Safran

Apr 12, 2012 | 2004 Volkswagen Passat

1 Answer

Air conditioner relay location 2004 passat

the a/c pressure switch is located to the left side of the condenser radiator, as you stand in front of the vehicle. you may have to remove the bumper in order to get access to this switch.
there are 2 relays dealing with the a/c , numbers 16 and 17, on the relay plate at the drivers knees, the plastic panel will have to come down. 16 is the clutch relay and 17 is a/c control module.
hope this is of some help

Jul 28, 2010 | 2004 Volkswagen Passat

1 Answer

How do i recharge my air conditioner in my 2004 Volkswagon R32 . The a/c condenser goes on but the air does not get cold. i can buy the a/c charger at walmart but dont know where or how to charge it......

1. check your refrigerant pressure and if the reading is below 20 psi then ur gas is less
2. locate low pressure service port that reads L
3. start engine/ turn ac on
3. recharge gas to max pressure between 20 and 40 psi max.
4. feel the low pressure line if its cooling while ac is running...the job is done...

Apr 08, 2010 | 2004 Volkswagen R32

1 Answer

I have a 1999 volkswagon passat that wont start a warning sign tells me low oil pressure what could be the problem

The oil pressure is low because the engine isn't running? Have you checked for spark?

Apr 07, 2010 | 1999 Volkswagen Passat

1 Answer

1998 volkswagon passat engine lifter rattle

Cause is lack of oil not getting to lifters. Try using a good cleaner to flush the engine and change to a lighter oil for a couple oil changes.

Sep 10, 2009 | 1998 Volkswagen Passat

1 Answer

I have a 1999 Volkswagon Passat. The air conditioner works great at night or when the outside air temp is below 80°; it will put out 55° air. But during the day it will only put out 10°...

check to see if you have a cabin air filter and if it is dirty have it replaced at a local auto shop.. if that isnt the problem and the freon level is correct then you will have to live with it.. a/c are concidered effiectient if they cool 20* below ambiant tempature.. personally i would say have the freon level/quality checked again

Aug 03, 2009 | 1999 Volkswagen Passat

2 Answers

Oil pressure

30 PSI hot idle is ok, 40-50 PSI at freeway speeds hot is good. this is based on using the correct weight of oil which is 10W-30W

Mar 30, 2009 | 2007 GMC Sierra 1500

Not finding what you are looking for?
2004 Volkswagen Passat Logo

Related Topics:

135 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

81342 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Volkswagen Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides