How to replace air conditioning (AC, Air Con) compressor for Audi A6 (C6 4F) 2.0tdi model 

Thanks 😊👍 $1750 is kind of expensive.. Very. For what it is.

Thanks Joch 👍

Leon Thomas hi! Did changing the compressor fix the problem and get cold air flowing??

I'll try my best 😷👍

You're very welcome :)

You're welcome 👍

There is no need to shout Melanie :) Your 2.7T and my 2.0tdi are very different engines, even cars are quite different. In your car AC compressor is on the other side of the crankshaft pulley and shouldn't be affected. Alternator is removed towards the bottom of the car, but I also don't see how oil sensor or suspension should be affected... What happened to the suspension and oil sensor?

Hot days are coming.. Eventually :)

You have to empty (degas) system before disconnecting compressor, because there's high pressure inside. Once you fit new compressor, then refill it again. No, sorry, I don't have a video about receiver drier, and I don't have experience with it..

It just stopped working, I had no air conditioning in the car. I took it to specialist, he diagnosed that compressor is bad.. As for symptoms - first, I had a problem year ago. Back then AC didn't want to switch on, when I pressed 'Econ' button, light still stayed on. That is normally a sign of low pressure, system senses it and doesn't let AC to switch on, so I re-gassed it and everything went back to normal. You see, the way it works with Audi - it doesn't just get weaker and weaker.. When gas pressure gets below certain point - computer just switches the AC off. At re-charging station they will be able to tell you, if you have a leak or not. This year button worked, but air didn't get any cooler, that specialist connected computer to see what's wrong, but diagnostics didn't show anything. Then he measured voltage at compressor's connector and said that compressor does get a signal, but doesn't react to it, so I need a new one. May be I could try to figure out how to fix my old one.. But it would take time, and I needed my car back on the road asap, I'm a taxi driver - have to work constantly.. Is there anything wrong with your AC?

WheelsAndMotors My A/C not working,probably compressor. Did you get system flushed and replace condenser also.?

jonnybowes I went to Kwikfit, they have a smart machine, apparently they evacuated gas and oil, and whe I brought it back - re-charged. That's all I know so far... sorry :)

jonnybowes but after I replaced compressor, conditioning works with no drama

Yes, bad compressor as a part of AC system can have a leak. Normally mechanics should be able to find leak if it's not only in compressor.

Your 2012 A7 probably is based on A6 C7. However all cars I have experience with (I'm not a mechanic) had similar compressor setup. Just make sure that you're buying correct part.

Thanks. No, mine wasn't leaking. Is the O-ring not on a compressors side?

@@wawayltd the A/C refrigerant discharge hose has O-Rings on both sides.

Probably. However in my experience, if there's no pressure in AC system, then it's stuck in Econ, also can be faulty pressure sensor. It all can be checked with the scanner that can see pressure in AC system. Of course there can be other reasons, but I would start from pressure. Maybe solution is as simple as re-gas.

Hi Jacek, when I will have Vw Phaeton V10 TDi, I'll definitely will make a video about the compressor. It's a cool car, but there's low chance that I ever get it. I can recommend you good manual for VW. Have a look on eBay for "Elsawin".

Ok thanks for the reply. I checked also is not a big problem with the replacement. By the way, a good movie. Very helpful . Best regards from Poland

Dziękuję bardzo :) Powodzenia z tym sprężarką.

(Google translator).. I'm from Latvia.

What is the cost of a new compressor

It is not absolutely necessary to replace dryer, but it is recommended. Especially if compressor broke there can be some debris left in the system. If it's only compressor clutch that broke - you don't have to de-gas it - just replace clutch I didn't do it, because my manuals didn't mention it, and one VW/Audi mechanic, said it is not necessary. But the main reason - I needed my car to be back on the road same day - and I made this video. Thank you for your comment - I edited video description. P.S. By the way - since replacement my AC works fine - and I do lots of miles every day :)

thank you for your reply. this is a great video. Fixing Audi is very expensive. I have an old 04 Audi A4 convertible. That the top convertible and AC not working. Its not blowing cold. I went to Pepboys to get my AC flushed and fill up the feon with 1.2 lbs in my system and find out that my compressor is not working. I didnt have time because I have to left ATL(Atlanta) so they didnt check if the clutch or compressor is mess up. I hope its just my clutch. Pepboys wanted to charge me $1100 for labor and $700 for a new compressor. There is no way in hell Im doing that. That is too rich for my blood. :( So I did a lot of research so I can DIY and came across your video and damn thank you so much because my compressor set up is the same as A6. Look like an EZ fix. Can a repair shop save my feon from my system and after I replace my compressor myself and refill it back? Or what should I do in my case?

ronny rath Normally repair shops have a machine, that does it all automaticly - degas, clean, put oil, re-gas. I have only rough idea of what it does, sorry. I don't think freon on it's own has so much value - the money you pay for this procedure is mainly cost of labour. They have big expensive machine - and you don't ;) It also takes some time, too. Here in UK it costs 49 GBP, some places can do for 39. If you have a friend working there, price can drop all the way to nothing :) You know, some places don't take any money, if re-charging didn't help, they wouldn't do that if freon would be expensive..

Я всегда просто менял компрессор и всё.. Эти аппараты, которые стоят в сервисах по идее всё промывают и перезаправляют. Обычно проблем нет. Последний раз, когда была проблема с кондиционером в шаране, мне надо было перепрограммировать контроллер, благо есть vcds. Но с осушителем и дросселем опыта не имею. У меня всегда виноватым был компрессор.

Когда компрессор умирает, то не холодит вообще. Может упало давление, или надо перезаправить?

@@wawayltd спасибо за ответ, смотрел васей диагностом. На нейтралке, давление качает 12-14 бар. Только поднимаеш обороти до 2000 например. Сразу падвет до 8 и еле холодит.... И никто не знает што за ерунда :(

They also did not check if gas was missing.

I think they should check gas pressure in the system. As for compressor - if they brake, easiest thing is to replace them rather than trying to fix. Whether your compressor is broken or not - I can't say, it needs to be seen. Quite often you don't need a scanner to see if compressor engaging or not. However in some cars if gas pressure is low ECU will not allow compressor to start. Before you start spending money on repairs, if you're not sure - check it with independent mechanic/garage, see what they say.

I think it's a valve. I have a video on them. They can be cleaned.

@@wawayltd Just an update... i took the valves apart this morning and cleaned them... they were not so dirty... i installed them back on and the ac worked fine... Normally upon cold start up the ac is normally warm... i hope this solution hold up... i am hoping to not have to replace the ac compressor or condensor or evaporator... thanks for your help sir. Shall i still go and check my ac gas level or its not necessary?

AC compressor, valve, and any other AC components have nothing to do with heating, as those are for cooling air. Heating is heating matrix + those valves.

Sorry Slawek, I have no experience with C5 and 2.4. Try to ask on some forums maybe?

@@wawayltd ok, tnx for quick replay I try on the Polish A6 forum but not more interesting this... everyone does not know the topic or they are afraid of it... Good Luck from Poland !

Thanks 😊

Hello - unfortunately, but to remove the compressor in this model [A6 C5 2.4], you had to dismantle the entire front of the car ... The cause of my problems was a broken (cracked) claw fastening the compressor to the engine block. ( part N* 078260835f ) imgupload.pl/images/2021/05/16/A6-lapa_.jpg

If I'm not mistaken, when they do re-charge using that big clever machine - it also cleans system.

+WheelsAndMotors ok thanks

you can mount the compressor but live lines out so you can flush the lines and there after conect the hoses double check your o rings

Find what's wrong with the AC system, fix (or replace) and then fill.

+WheelsAndMotors thanks for answer . drap : 00256 - A/C Pressure/Temperature Sensor (G395) 002 - Lower Limit Exceeded - Intermittent Freeze Frame: Fault Status: 00100010 Fault Priority: 3 Fault Frequency: 1 Reset counter: 131bur system emty ;

No. Plug and play.

Do you have it automatic, where you set certain temperature in degrees or manual one where you make warmer or cooler by yourself?

Aleksandr Zinkevics У меня до сих пор нету VAG COM. История с компрессором простая - давление есть, но не работает - просто меняю компрессор. Я знаю, что там можно сцепление поменять... Как-то :) Но не пытался. Шариком доволен, хоть компрессор уже тоже поменял :) Вот мой вебсайт - оттуда можно выйти на всё остальное: www.wheelsandmotors.com

Depends where you buy. It was while ago, so I don't remember. Best to shop around.

Нет. Не приходилось... Хотел научиться менять сцепление у компрессора, но пока руки до этого не дошли.

Sorry Graeme, I don't do mecahnical repairs as business. In addition I'm probably far away (Bristol).

It's not that hard anyway.

I know that clutch pulleys can be replaced, they also sell them on eBay. Cost of new compressor is about 200 pounds, pulley - just over 60. Have a look at this: www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.X8E0260805+pulley.TRS0&_nkw=8E0260805+pulley&_sacat=0 However, I've never tried to replace pulley, so don't know how easy it is. The other thing you need to consider - you need to make sure that it's definitely a pulley clutch that's faulty and compressor is fine.

No. 377k miles on the clock, never done it. Probably supposed to... Audi dealers say, manual gearbox oil is for life. But I think it depends what life is :) I do 65k a year. I kinda think about it...

Wow! Maybe you should do a video? That's what it says about my VW but I'm a bit dubious. Love your vids by the way!

Thanks :) Yeah, one day maybe I'll get a chance to do video about that. At the moment I have few problems to sort out in my life, don't have much time to do much for my channel or website. I have couple requests, need to find time for that as well... I wish I could do this full time! Hopefully that day will come ;)

Ok, Hope all is well and take care of yourself!

Bristol. Don't think I'll have time.. Lots of responsibilities at the moment 😉 Come on - I know you can do it!

I don't know if it would be the same for all those engines, best to ask part suppliers.

Marko makas 8

Спасибо.

Nowadays they do lot of things in China..

No, it not made in China.It's remanufactured compressor with special improvement compared with original Denso compressor.Why did not you adjust oil amount? Compressor is filled with oil regarding OE specifications

Piotr Gajda I know instruction says to use amount of oil accordingly to specs, but I believe that the way it's sold it's about right. Plus when they re-charge system on that big clever machine it cleans and stabilises gas and oil - at least that what it says on its display. I had to replace compressor on this car and my new Sharan - never had any trouble. Anyway - how would you manually measure and adjust amount of oil in compressor?

It's not as bad as it looks 😁

aknurzhan Medet У меня есть описание (текст) того, что было сделано в этом видео - можно легко перевести с помощью Google переводчика.. Вот ссылка: www.wheelsandmotors.com/show_solution.php?id=21