Audi A4 heater blowing cold on one side!?!?!?

Audi A4 heater blowing cold on one side!?!?!?

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Discussion

JeffC

Original Poster:

1,719 posts

219 months

Monday 26th October 2009
quotequote all
2006 A4 with the usual dual climate control, despite both sides being on " hi "the drivers side blows cold which in this climate isnt ideal! doesnt matter what you do with the temp control it stays the same, guess what ever the electronic control controls is stuck but where is it located and what is the fix!

many thanks in advance!

fatboy b

9,576 posts

223 months

Monday 26th October 2009
quotequote all
I had this on my last A4 - a 2004 Cabriolet. It lasted a couple of days, and fixed itself. I got it checked out at the dealer, and no-fault-found.

Dr G

15,403 posts

249 months

Monday 26th October 2009
quotequote all
Flat motors could be out - had that one a few times on B7 A4s but unsure what the fix was as repairs were done under Audi warranty (was a quick job though IIRC).

Tame Technician

2,467 posts

211 months

Monday 26th October 2009
quotequote all
As above will be a flap motor.

Need to know which one, replace it and carry out basic setting on all of them.

£60ish for the part + 1 hour including investigation.

JeffC

Original Poster:

1,719 posts

219 months

Tuesday 27th October 2009
quotequote all
thanks for the info..

where is the flap motors located? Ive had a problem in the past where the vents were stuck blowing down, i stripped out the glove box and lubed up a mechanism in the passenger footwell that was stuck, is this similar? its the drivers side that wont change temp.

Edited by JeffC on Tuesday 27th October 08:09

Tame Technician

2,467 posts

211 months

Tuesday 27th October 2009
quotequote all
There are two or three each side, obviously the one that is sticking now is drivers side, to get to it, you would need to remove the trim much as you would the glove box on the other side.

Is usually a motor failure and need replacement, but they do somtime stick, a good shape hit with a ratchet can help. If you keep working the heater controls you should be able to see which one isnt moving.

But I'd read the fault memory and then unplug if and re read the fault memory to be sure.

JeffC

Original Poster:

1,719 posts

219 months

Tuesday 27th October 2009
quotequote all
thanks TT.I stripped out the drivers side to find a blue connector and a yellow linkage with no motor! ordered one up £79.

thanks again for the input.

Tame Technician

2,467 posts

211 months

Tuesday 27th October 2009
quotequote all
JeffC said:
thanks TT.I stripped out the drivers side to find a blue connector and a yellow linkage with no motor! ordered one up £79.

thanks again for the input.
NO motor, that'll do it.

It technically needs a basic setting ones its fitted. But if you go through all the ranges on the controls, air to feet, air to screen, and full heat to full cooling etc. That might be enough.

progman

1 posts

180 months

Thursday 5th November 2009
quotequote all
I have the same problem have had it diagnosed as the Right Temperature Flap Motor V159 and Right Temperature Flap Potentiometer Actuator G221. Each costs about £70. Quoted £441.38 by Audi to fix. I thought I'd have a go myself but need some sort of diagram where the things are at least. Anyone any ideas

Waugh-terfall

18,488 posts

207 months

Thursday 5th November 2009
quotequote all
Our 2005 A6 does this every now and again, except it'll be the furthest passenger side vent blowing as hot as it can for a while, and then it'll sort itself out... :S

JeffC

Original Poster:

1,719 posts

219 months

Thursday 5th November 2009
quotequote all
drop the panel off under the steering wheel, the motor is underneath on the side held in with small bolts, siply remove and replace, job start to finish took 10minutes.

gio6500

42 posts

173 months

Saturday 9th November 2013
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Sorry to crash in on this but I have a slightly similar but different issue.

I have an A4 2.0 TDI 55 plate with climate control issues. The engine temperature remains at a steady 90 and does not fluctuate. When it has reached this temperature you would expect that if for example i set the temperature of climate control to 28degrees I would expect pure heat. it is not nowhere near that temperature. Only lukewarm air. It gets a bit better on the motorway but still no way near that temperature as i should expect to be sweating.

All the vents seem to work fine so theres no blockage of air coming through.

Any ideas?


seatdriver357

20 posts

132 months

Saturday 21st December 2013
quotequote all
Do a search for Seat exeo heater actuator on here or Google, I traced my fault to the drivers side footwell temperature sensor, it was reading 90oF all the time so therefore climate control continually tried to cool,

To test;
Make sure car is up to temperature.
Direct both sides to blow hot Air, 28oF, ( not Hi setting) into the footwells,
If drivers side is cold and passengers side hot then I would put my bottom dollar on its the same fault.

If you don't have the software to read controller 8 you can swap the footwell sensors over and redo test, if problem moves then it's the sensor.

To gain access, pull radio forward, pull out climate controller, both sensors are visible, remove connection, rotate 90o and remove.

seatdriver357

20 posts

132 months

Saturday 21st December 2013
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90oC, not 90oF, auto typo error,

seatdriver357

20 posts

132 months

Saturday 21st December 2013
quotequote all
90oC, not 90oF, auto typo error,

lengster

215 posts

166 months

Saturday 21st December 2013
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Iva same issue as OP on an 06 tdi ive just bought,it vagcom scanned with v159 blocked or no voltage and right flap actuater g221.Theres a basic reset according to a little research so il perform it with vagcom and hope restoring the basic settings cures it........fingers crossed.

gwm

2,390 posts

151 months

Tuesday 2nd September 2014
quotequote all
Just had this on my 2004 A4 cab. 3 days it was doing it, just as I make time to investigate it doesn't do it on any combination. Taking that as a win!

parry916

2 posts

109 months

Thursday 8th October 2015
quotequote all
gio6500 said:
Sorry to crash in on this but I have a slightly similar but different issue.

I have an A4 2.0 TDI 55 plate with climate control issues. The engine temperature remains at a steady 90 and does not fluctuate. When it has reached this temperature you would expect that if for example i set the temperature of climate control to 28degrees I would expect pure heat. it is not nowhere near that temperature. Only lukewarm air. It gets a bit better on the motorway but still no way near that temperature as i should expect to be sweating.

All the vents seem to work fine so theres no blockage of air coming through.

Any ideas?

parry916

2 posts

109 months

Thursday 8th October 2015
quotequote all
gio6500 said:
Sorry to crash in on this but I have a slightly similar but different issue.

I have an A4 2.0 TDI 55 plate with climate control issues. The engine temperature remains at a steady 90 and does not fluctuate. When it has reached this temperature you would expect that if for example i set the temperature of climate control to 28degrees I would expect pure heat. it is not nowhere near that temperature. Only lukewarm air. It gets a bit better on the motorway but still no way near that temperature as i should expect to be sweating.

All the vents seem to work fine so theres no blockage of air coming through.

Any ideas?
i have the same problem did you get to the bottom of this issue?gio6500?

lubirant

1 posts

60 months

Thursday 14th November 2019
quotequote all
I have an Audi A4 2013, the heater doesn't seem to get as high as it should(but can't really say), and the problem is that it is completely cold on the passenger side.
Took it to the Audi dealership and they checked it for almost an hour and said they didn't find anything wrong with the normal equipment and they need more time to open the dashboard completely and diagnose everything by detail, which is going to cost me a lot.
Does anyone has an idea what it can be?