Tag: airmatic

Mercedes CLS55 AMG W219, Repairing The Airmatic Compressor to Valveblock Airline

My MacGuyver method for repairing the airline did not hold out very long, so I needed something structurally. Fortunately, Mercedes sells a piece of airline (1.5m) for repairing/maintaining the Airmatic system, which was exactly what I needed.

Partnr: 2203271045 / A2203271045
Costs: about 20 euro

MacGuyver vs new airline. I used some teflon tape for extra safety
I found some hose which fitted around the airline perfectly (also for extra safety against rubbing)

Mercedes CLS55 AMG W219, Solving AirMatic Issues

I was suprised with this look, which is a horror type of situation for every CLS owner with Airmatic suspension. In the end I tracked the issue down to a leaking compressor air line (to the valve body), which solved the issue.

Mercedes CLS55 AMG W219, Replacing The Airmatic Air Filter

Replaced the Airmatic air filter, which makes sure that dirt & debris stay out of the Airmatic system. Mercedes uses a fuel filter, repurposed as an air filter for this system. The partnumber is: WK 32/6 (Mann filter)

Old vs new
Old vs new
Old filter dissected, didnt look all that bad, considering it’s probably 17 years old

Mercedes CLS55 AMG W219, Replacing The Airmatic Compressor

With 186k kilometers on the clock and 17 years old, its good to start replacing parts as a preventative measure. After 17 years, rubber will be hard and brittle and electrical components might show fatigue or arent as “snappy’ as 17 years ago.

The Airmatic compressor (and relay) works hard to keep the 4 air springs inflated and after 17 year, its time for a rebuild or a pension 😉 I chose rebuild (and pension), so I always have a good one as spare. For good measure, also swap the Airmatic relay!

The Airmatic compressor on the drivers side, right behind the bumper.
New vs Old Wabco compressor
The new compressor in place. Unfortunately, the new compressor has a slightly different layout, so I worked around that by extending the air line. I used reinforced 4mm ID vacuum line to get it to work
Unfortunately, normal silicone boost/vacuum line is not suitable for 10-14 BAR working pressure 🙂 It went bang on me!

Mercedes CLS55 AMG W219, Replacing The Rear Air Springs / Bags

Changed the air springs on the CLS55, just as a precaution. With 186.000 kms on the clock, that is not a bad thing to do. Replaced them with eBay units.

They are holding very well so far 🙂 !

Left: A 211 320 13 25 / A2113201325
Right: A 211 320 12 25 / A2113201225

Mercedes CLS55 AMG W219, Forgot How Wide The Rear Tyres Are…

I had to do an visual inspection of the rear airbags of the Airmatic system and when I looked at the rear tyre, I totally forgot how wide they are…They should be, else it would be very hard to get all that power on the floor!

Hankook Ventus S1 Evo 3 in 285/30/19

See all CLS55 AMG pictures here in my Google Photos album: https://photos.app.goo.gl/6SP5PFAUXCqanoSX9