Audi A4 Air Con - stuck on economy

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Wed 11 Apr 2007 09:53
Audi A4 Air Con - stuck on economy - Dave H
My 2002 Audi A4 air conditioning is stuck on the economy setting and as such it will not cool as well at it used to.

I have had it recharged and this made some differenbce to its cooling ability, but is still not as good as it should be.

Anyone any ideas?

Thanks in advance


Dave
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Wed 11 Apr 2007 10:24
Audi A4 Air Con - stuck on economy - adverse camber
take it to a proper air con specialist. waste of time and money to get it recharged without getting it checked. was it pressure or vacuum tested ? How much gas was taken out ? when was the dryer last changed? etc etc
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Wed 11 Apr 2007 10:31
Audi A4 Air Con - stuck on economy - Lou_O
Could well be the thrust sensor. Heard of this problem on a few VAG cars.

Have a look at these threads and decide for yourself:

www.vwaudiforum.co.uk/forum/showthread.php?t=1208

www.vwaudiforum.co.uk/forum/showthread.php?t=3375

If it is the same problem as in those threads it's either a £40 DIY job or around £150 if dealer dirties his hands. If you take it to the dealer they can diagnose the problem using the computer.

Good luck :)

Lou
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Wed 11 Apr 2007 11:13
Audi A4 Air Con - stuck on economy - daveyjp
I had a pollution sensor for the auto recirculation system on the A3 fail - it manifested itself by the auto recirc button only illuminating for a few seconds.

It was repaired under warranty, but I expect an hour would have been charged for the job and the sensor was £50.
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Wed 11 Apr 2007 11:53
Audi A4 Air Con - stuck on economy - Hamsafar
You need to have the HVAC control unit read for codes and view live data, such as the various temperatures, voltage at compressor clutch, pressure sensor reading etc... If it is in ECON mode, the air cooling function is totally disabled, any sense of cooling is probably wishful thinking.
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Fri 13 Apr 2007 10:33
Audi A4 Air Con - stuck on economy - Dave H
Thanks to everyone who replied.


Dave
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