Stewb Posted July 10, 2020 Share Posted July 10, 2020 Hi guys About 3 weeks ago my AC packed up so looked online for a fix, and ordered a air conditioning pressure switch 4H0959126B. Fitted the switch this morning and hey presto I now have full AC again, just in case anyone has no AC try this before you go to the dealer. The switch is located on the right hand side of the condenser in front of the radiator when looking from the front of the car. Make sure the engine is cold so not to loose any fluid on the A6 C7 you only have to take of the plastic cover on top of the grill, then unscrew the sensor and replace with the new one an easy fix for about 20 quid. Hope this will help some off you out. cheers Stewart. 1 1 Quote Link to comment Share on other sites More sharing options...
Steve Q Posted July 10, 2020 Share Posted July 10, 2020 Thanks for this great advice Stewart, glad it's all sorted for you 🙂 Cheers Steve Quote Link to comment Share on other sites More sharing options...
Stewb Posted July 10, 2020 Author Share Posted July 10, 2020 1 hour ago, Steve Q said: Thanks for this great advice Stewart, glad it's all sorted for you 🙂 Cheers Steve Thanks Steve Just hope it will help some people out. 1 Quote Link to comment Share on other sites More sharing options...
Jim70 Posted July 13, 2020 Share Posted July 13, 2020 On 7/10/2020 at 12:02 PM, Stewb said: Hi guys About 3 weeks ago my AC packed up so looked online for a fix, and ordered a air conditioning pressure switch 4H0959126B. Fitted the switch this morning and hey presto I now have full AC again, just in case anyone has no AC try this before you go to the dealer. The switch is located on the right hand side of the condenser in front of the radiator when looking from the front of the car. Make sure the engine is cold so not to loose any fluid on the A6 C7 you only have to take of the plastic cover on top of the grill, then unscrew the sensor and replace with the new one an easy fix for about 20 quid. Hope this will help some off you out. cheers Stewart. Hi Stewart, glad you got it sorted. How did you know it wasn't working, was there any other signs or was it just blowing warmer air? Just about a week ago I noticed my air con wasn't as cold as normal and then put it on yesterday and it's not cold at all. I thought it may need a re-gas but now thinking could it just be this sensor? Quote Link to comment Share on other sites More sharing options...
Stewb Posted July 17, 2020 Author Share Posted July 17, 2020 Hi James That's the same that happened to mine, I went to Kwikfit and was told it was fully gassed. no cost yippee. So I looked on line and a lot of the Americans had the same problem so I ordered the sensor part number above, and at 20 quidish it's a no brainer in my opinion to try this first and it's so easy you wouldn't believe it. Sorry for the late reply just back from the wet Isle of Skye M8. Quote Link to comment Share on other sites More sharing options...
Jim70 Posted July 17, 2020 Share Posted July 17, 2020 2 hours ago, Stewb said: Hi James That's the same that happened to mine, I went to Kwikfit and was told it was fully gassed. no cost yippee. So I looked on line and a lot of the Americans had the same problem so I ordered the sensor part number above, and at 20 quidish it's a no brainer in my opinion to try this first and it's so easy you wouldn't believe it. Sorry for the late reply just back from the wet Isle of Skye M8. Thanks for reply mate. I ordered the sensor, same part number and for the sake of 20 quid (£19.85) to be exact lol. Have just got in from work and the sensor arrived today so just popped it in and it's worked a treat 🙂 much appreciated mate, saved me a whole lot of hassle, money and possibly a sweaty weekend 😂 Quote Link to comment Share on other sites More sharing options...
Magnet Posted July 18, 2020 Share Posted July 18, 2020 Hello Stewart, Sounds a great pointer. I wondered if this is just A6, and the reason for asking was that a family member has an early 2015 A4 Avant, and has experienced poor/lack of air con. Issue was diagnosed as a faulty magnetic clutch on the compressor, but the mechanic didn’t want to change the clutch part - in favour of a complete compressor. With Audi wanting £1000 ( with discount) for a compressor, the car was fitted with a Brand x replacement. Upshot, sort of cools air a bit, but does not consistently chill and it. Diagnosis is now an unreliable valve in the new compressor. Just wondering Stewart:- Do you know if the sensor is common to the A4 as well, and if so, and the sensor goes faulty, can it result in cooler, but not chilled air, as well as not cooled at all? Many thanks and kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Stewb Posted July 19, 2020 Author Share Posted July 19, 2020 Hi Gareth As far as I know it the same problem on the A4, hope this fixes it for you. regards Stewart 1 Quote Link to comment Share on other sites More sharing options...
Stewb Posted July 19, 2020 Author Share Posted July 19, 2020 Hi James Glad to see that this simple fix worked for you as well great stuff M8. regards Stewart. 1 Quote Link to comment Share on other sites More sharing options...
Kamil juszczak Posted April 12, 2022 Share Posted April 12, 2022 On 7/10/2020 at 12:02 PM, Stewb said: Hi guys About 3 weeks ago my AC packed up so looked online for a fix, and ordered a air conditioning pressure switch 4H0959126B. Fitted the switch this morning and hey presto I now have full AC again, just in case anyone has no AC try this before you go to the dealer. The switch is located on the right hand side of the condenser in front of the radiator when looking from the front of the car. Make sure the engine is cold so not to loose any fluid on the A6 C7 you only have to take of the plastic cover on top of the grill, then unscrew the sensor and replace with the new one an easy fix for about 20 quid. Hope this will help some off you out. cheers Stewart. I have a problem with the AC button. I press him. the light comes on and goes out immediately. and the AC was not working Quote Link to comment Share on other sites More sharing options...
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