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"Air Susp Faulty Workshop"


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I started getting the "Air Suspension Faulty Workshop" warning about 3 to 4 weeks ago on my 04 Cayenne S. And just like others here, every time I restarted my Cayenne it would go away, but it also wouldn't come on for a few days. I haven't been able to figure out what kind of situation/action causes it to go off.

After reading a few posts, I decided to take it to the dealership to run the diagnostics. The dealership says I need a new compressor and an air suspension block, and would run me about $1300-1500. But interestingly, also mentioned that it won't hurt the car if left as is, the air suspension just won't work at its 100%, and if left at the same level, it should work just fine. But I get the warning sometimes even if I don't change the level.

Now I am confused about spending that kind of money and getting it fixed if it is going to be fine as long as I don't change the levels too much. :unsure:

Have any of you had a similar problem? And does anyone have more insight into what might happen if I don't get a new compressor and block.

I am ok spending the 1500 if it prevents me from getting a bigger bill later.

Help! :help:

Edited by atlpardi
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My 04 has had a replacement front compressor (under warranty) and a new front strut (also about $1500)

If it fails, you will end up with the front or back fully down and drivable at 5mph, or a flatbed. I am amazed they said just use it as is. The compressors are always working and unless they suspect a false reading, I would spend the money.

I started getting the "Air Suspension Faulty Workshop" warning about 3 to 4 weeks ago on my 04 Cayenne S. And just like others here, every time I restarted my Cayenne it would go away, but it also wouldn't come on for a few days. I haven't been able to figure out what kind of situation/action causes it to go off.

After reading a few posts, I decided to take it to the dealership to run the diagnostics. The dealership says I need a new compressor and an air suspension block, and would run me about $1300-1500. But interestingly, also mentioned that it won't hurt the car if left as is, the air suspension just won't work at its 100%, and if left at the same level, it should work just fine. But I get the warning sometimes even if I don't change the level.

Now I am confused about spending that kind of money and getting it fixed if it is going to be fine as long as I don't change the levels too much. :unsure:

Have any of you had a similar problem? And does anyone have more insight into what might happen if I don't get a new compressor and block.

I am ok spending the 1500 if it prevents me from getting a bigger bill later.

Help! :help:

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  • Moderators

Valve block and compressor are two separate units, valve block failure is rather rare. You can buy a compressor repair set on a Volkswagen dealership for 1/4 price ( VW use the same compressor and sells a repair kit, Porsche don't )

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Great to know RFM thanks

Mike

Valve block and compressor are two separate units, valve block failure is rather rare. You can buy a compressor repair set on a Volkswagen dealership for 1/4 price ( VW use the same compressor and sells a repair kit, Porsche don't )
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Thanks to mudman2 and RFM.

I am obviously now interested in the repair kit. I was able to find the part number (7LO 698 030), but nothing more online.

RFM, can you give me a little bit more detail about the repair kit and how it works? How much work is involved and does it require special tools? Thank you in advance.

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No special tools are needed. The kit contains: 1 tubing ( not needed for Cayenne - different design ) 1 cylinder/pressure body inclusive temp. sensor and 1 piston compression segment. Ask the V.W. dealer for an overview of the TB with the rebuild instructions, there is just one tricky point to look at, the exact segment possition on the piston. I can explain it but a image is a lot easier. Removing the compressor from the car is a piece of cake.

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Thanks a lot... I'll check with the VW dealer next.

No special tools are needed. The kit contains: 1 tubing ( not needed for Cayenne - different design ) 1 cylinder/pressure body inclusive temp. sensor and 1 piston compression segment. Ask the V.W. dealer for an overview of the TB with the rebuild instructions, there is just one tricky point to look at, the exact segment possition on the piston. I can explain it but a image is a lot easier. Removing the compressor from the car is a piece of cake.
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Got the copy of the service order today.

Fault 1772 in level control for pressure sensor lead. Checked the air suspension for leaks, all wires ok. Diag sheet recommended to replace the solenoid block, but bulletin recommended replacing compressor.

But then a search online for TSBs... "LEVEL ADJUSTMENT FAULT CODE 1772 - PRESSURE SENSOR SIGNAL LINE -- THE DIAGNOSIS FOR LEVEL CONTROL FAULT 1772 DOES NOT INDICATE THE LEVEL CONTROL COMPRESSOR AS POSSIBLE FAULT CAUSE."

Will check with VW dealer tomorrow for the repair kit. But wondering if the compressor is ok and only the solenoid block needs to be replaced!

Any inputs? mudman2? RFM?

Thanks again.

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Update.

Two days later, after I had the diagnosis done, I tried to start the Cayenne and the battery went almost dead. And while dying, gave me another error - Steering Faulty. Tried to jump start it but locked up the steering wheel and wouldn't start. The key would move but wouldn't unlock the steering wheel.

Had it towed to the dealership and after putting in a new battery, all errors disappeared, including the Air Susp warning. The tech tried every thing to get the Cayenne to give the warning, but thankfully no warnings.

The interesting thing is that it was a different tech earlier and he said the solenoid blk and compressor needed to be replaced. And now with a different tech, all systems fine. Something just did not sound right the first time.

Anyway, I hope my experience helps someone in the future.

It was just the battery that needed to be replaced.

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Well a reset may have cleared it but that fault is a strange one. I first had it 2 weeks from new and the compressor did not go till 70K

Good luck

Update.

Two days later, after I had the diagnosis done, I tried to start the Cayenne and the battery went almost dead. And while dying, gave me another error - Steering Faulty. Tried to jump start it but locked up the steering wheel and wouldn't start. The key would move but wouldn't unlock the steering wheel.

Had it towed to the dealership and after putting in a new battery, all errors disappeared, including the Air Susp warning. The tech tried every thing to get the Cayenne to give the warning, but thankfully no warnings.

The interesting thing is that it was a different tech earlier and he said the solenoid blk and compressor needed to be replaced. And now with a different tech, all systems fine. Something just did not sound right the first time.

Anyway, I hope my experience helps someone in the future.

It was just the battery that needed to be replaced.

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  • 5 months later...

could you post the link? i tried searching, but no luck.

(i found "Some common problems on 2004 Cayenne S," but no pics.)

i no longer have the problem, but am curious to see your post.

Hello.

I had the same problem with "air suspension faulty workshop" alarm everytime i started the car. I have put a description with pictures in the DIY section. Hope this might help you with your problem.

Regards

isakpede

Edited by atlpardi
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  • 12 years later...
  • 1 year later...

Finally happened to my Cayenne. Strangely battery went flat too, maybe leaky pump kept on compressing until battery died. 

Parts still available on parts.vw.com 7L0698007A

I replaced the compressor portion not the piston side, and fixed the problem.

Note the air plumbing before disassembly, need to remove black and brown.

 

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