http://www.audi-sport.net/vb/ en Wed, 22 May 2013 00:29:58 GMT vBulletin 60 http://cdn.as-static.com/vb/images/styles/AnimatedArena/misc/rss.png http://www.audi-sport.net/vb/ http://www.audi-sport.net/vb/air-conditioning/189302-my-poor-old-a4s-not-cool-used.html Mon, 20 May 2013 21:50:58 GMT I know very little about air conditioning systems, so here goes.

Car is a 2003 1.9 TDI B6 A4 with the standard 2 zone climate control.

It's had a problem for over a year now really. On moderate days (15-20 degress) after sitting for a day in the sun, I get in and open the windows to let the hot air out. I turn on air con to 21 and leave it. Fan speed will go to 1 or 2 bars and stay there for about 3min, pumping out cool air. Then after that the fan speed goes to 4-6 and pumps out cool (not cold) air. So all is fine, despite it not doing what it should.

On a hotter day, or if I put the air con on LO, the fans go crazy and just pump out ambient air.

So that's the problem. It was recharged a year ago (professionally) and there are no fault codes stored.

Does anyone have any ideas what the problem is? It strikes me as a problem with wear somewhere in the system - because it works when running at low speed, but not faster.

Any ideas gratefully received! ]]> Air Conditioning benjie http://www.audi-sport.net/vb/air-conditioning/189302-my-poor-old-a4s-not-cool-used.html http://www.audi-sport.net/vb/air-conditioning/188778-c-issue-b8-avant-wiring-problem.html Tue, 14 May 2013 21:36:12 GMT A/C doesn't work! Had gas checked and it is OK. Ran a VCDS scan and got the below.

Should note that I had a similar issue in June 2011, fixed under warranty - I don't know the details (didn't run a scan that time) but they said it was a wire that needed replacing.

Annoyed as the car had main dealer service and MoT in Jan while still in warranty (just) and they didn't pick up on the fault codes (dated Dec 2012) as Audi say they don't routinely run a fault code diagnostic when doing a service / health check!?!? Now they want £145 just to investigate and find out what is wrong!?

Faults indicate a communication error between the main switch panel (J255) and the central electronics module (J519), A/C Pressure/Temperature Sensor (G395) and Air Quality Sensor (G238). Then errors between the central electronics module (J519) and the A/C Pressure/Temperature Sensor (G395) and Air Quality Sensor (G238).

Anyone had a similar issue, know where these sensors are or how I could check them? Is it easy to take the main switch panel out and check for a loose wire behind? Would the J519 communicate with G395 and G238 via J255 (in which case it could be a dodgy bus connection on J255?

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels: Redir Fail!
Part No SW: 8T2 820 043 AF HW: 8T2 820 043 AF
Component: KLIMA 3 ZONEN H08 0171
Revision: D0000000 Serial number: 01111120090412
Coding: 66140000
Shop #: WSC 06335 000 00000
VCID: 76E7BE01C1C445A80B0

3 Faults Found:
00457 - Control Module for Network (J519)
013 - Check DTC Memory

Date: 2012.11.22
Time: 15:46:18

00256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal

Date: 2012.11.22
Time: 15:46:18

Freeze Frame:
Temperature: 12.0°C

01592 - Air Quality Sensor (G238)
004 - No Signal/Communication

Date: 2012.11.22
Time: 15:46:20

Freeze Frame:
Temperature: 12.0°C

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels: 8K0-907-063.clb
Part No SW: 8K0 907 063 N HW: 8K0 907 063 N
Component: BCM1 1.0 H25 0380
Revision: 09025001 Serial number: 00000000507984
Coding: 260050914034AF010001000000001D0D0F1D470A0001014100 0000
Shop #: WSC 06335 000 00000
VCID: 3A7F6A31B55CE1C82F8

Subsystem 1 - Part No SW: 8K2 955 119 A HW: 8T2 955 119 Labels: 1KX-955-119.CLB
Component: WWS 061109 H05 0070
Coding: 00FD11

Subsystem 2 - Part No SW: 8K0 955 559 HW: 8K0 955 559 Labels: 8K0-955-559.CLB
Component: RLS H04 0003
Coding: 025028

Subsystem 3 - Part No SW: 8K0 941 531 AL HW: 8K0 941 531 AL
Component: E1 - LDS H08 0090

2 Faults Found:
00256 - A/C Pressure/Temperature Sensor (G395)
004 - No Signal/Communication

Date: 2012.11.22
Time: 15:46:00

01592 - Air Quality Sensor (G238)
004 - No Signal/Communication

Date: 2012.11.22
Time: 15:46:00
------------------------------------------------------------------------------- ]]> Air Conditioning elrao http://www.audi-sport.net/vb/air-conditioning/188778-c-issue-b8-avant-wiring-problem.html http://www.audi-sport.net/vb/air-conditioning/188082-intermittent-aircon.html Mon, 06 May 2013 15:16:58 GMT Tried a search but nothing to do with my issue popped up. So whilst my car was in for a turbo I asked for a regas, he said sure and that hell do... Tried a search but nothing to do with my issue popped up.

So whilst my car was in for a turbo I asked for a regas, he said sure and that hell do it for 40. Now come collection he said I won't charge you because when the car was up he noticed a pipe wasn't connected to the compressor and when he reconnected it there was a "clicking" noise and it didn't work so he thinks my compressors has gone.

Now on the way home from manchester today it came on freezing cold, then I turned it off n on and it was warm, then off and on again and was warm? ]]> Air Conditioning Mikemc http://www.audi-sport.net/vb/air-conditioning/188082-intermittent-aircon.html