Passat (B5) :: Climatronic / AC Failure For No Real Reason


Jul 20, 2004

My climatronic/air conditioning just failed on me for no real reason that I can tell. It was working perfectly this morning.

Now, the system blows only warm air, and on the display where it *should* say the outside temperature, it displays "--0" and then the Celsius sign.

This is a 2002 GLX 4mo, if that makes a difference.

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I noticed about a week ago (on a cool morning) that my Climatronic system would not blow heat. I played around with it briefly by adjusting the temp settings and how the blower was working.

If I set the temp to High heat would blow out for like a minute but anything else would just blow cold air.

If I set the temp to High and turn Econ on I would get hot Air.

No other settings would generate heat. I VAG Commed my car and there were not fault codes!!!

I took my car to my normal indie shop and they also were puzzled by this. They re-ran a vag com and nothing for them either. The heater core was flushed recently with the resting of my coolant system when my TB was done.

There is no sign of leakage for the heater core but I'm super puzzled to what the problem may be.

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Halfway into a 2 hour trip away from home my climatronic died. The display is blank and no air is moving through any of the vents. This was a big problem since I encountered a heavy rainstorm and my only means of clearing the windshield was my handkerchief. I checked the fuse and it seems fine. There was clicking in the dash prior to this happening. I looked at the relay and it seems fine but I wouldn't know what a "bad" relay looks like.

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I have cut of the battery, and when I reconnected it and turned the ignition on the climatronic display was blinking for approx 10 seconds, and after that worked normally. What could happen to it?

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Passat (B5) :: Subtle Knocking / Popping Sound Under Dash (Maybe From Climatronic)

When car is on , I am hearing a subtle knocking/popping sound I thought was from climate control but not so as even when it's off i hear it. It sounds like a popp noise from maybe passenger side. What component might be doing this?

'02 GLX

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Passat (B6) :: 2006 Climatronic - Cold Air Is Just A Little Too Warm To Be Working Correctly

I have a 2006 Passat 2.0T (UK Model), and I'm having trouble with both the outside temperature reading and the climatronic's cooling ability. When I bought the car the air-con was blowing cold and warm air without any problems, but the "cold" air is just a little too warm to be working correctly. I've had the system re-gassed but this didn't solve anything.

As I said, all the features of the air-con work perfectly, it's just the cold air just isn't cold enough - so it seems to me that the compressor is working fine. Also, the outside air temperature reading on the MFD reads about 5-10 degrees too warm. Would this have anything to do with the air-con issue?

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My climatronic has been goofy since I bought my 2000 v6 4mo. In the winter my heat never got really hot and now in the summer my A/C work sporadically. I had the thermostat changed along with the full timing belt service. I'm hoping I'll get full heat come september. My A/C, however works less and less often. The tech who did the timing belt change etc. said that there was a lot of pressure at the condenser, but that he thought a flap may have been stuck. he checked those and they are fine. The last two things he said should be checked are the external temp gauge(which is way off, reads 22'F when its like 85 out) or possibly I need a new climatronic head unit.

My questions are esentially these; Does the climatronic use the outside temp gauge to determine cabin temp? Do head units fail often? Are there temp sensors in the cabin other than those built into the climatronic head unit?

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I noticed it today when I first started driving to work. The sound would be best described as if you were missing a big chunk of rubber from your tire and you heard the 'thumping' as the tire rotated. It happens when I go into left turns mostly. Sometimes when I go into right turns. And only once when I was driving straight this morning when the car was first started. I am not certain where the vibration is coming from, but it feels like it is the rear of the vehicle somewhere. What this might be? (I checked the tires, no missing chunks )

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My Passat alarm went off last night for no apparent reason. Car had been parked for a few days. The engine started whilst the alarm was sounding. The interior lights were flashing and the electric window stayed down and wouldn't go up. Needed to drop it to see to get the car in the barn away from the neighbours house as the windows were frosted over. Disconnected battery and the alarm finally stopped. Tonight I reconnected the battery and it locked me out. I realised later that there's a procedure to go through after reconnecting the battery but foolishly I cut the wires to the alarm, which didn't stop it. It was getting the horses in the barn wound up and I needed to stop it. What caused the initial alarm? ECU fault? It's a '99 V6 TDi.

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Passat (B7) :: Check Engine Light With No Reason

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We ended up jumping the car and it started up with no problem. I let it idle for a bit but then all of the light on my dash came on..... I reved the engine a bit and they all went away.

A few days pass and the car starts up with no problem. Then I get stuck sitting in underground parking, so I turn the car off while I wait for the cars to exit the garage... again listening to music with the car off... go to start and nooooo juice! Being that the car is manual I was able to get it rolling and then popped the clutch..

224,000kms and counting.... all OEM

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This morning the car wouldn't start...got it going with a jump and drove it a while to recharge, but when I turned it off, the radio stayed on, as did a fan under the hood and probably other stuff I didn't notice ... I assume this is what caused the battery to die in the first place... I've disconnected it for now but can't keep doing that forever ...

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