https://w220.wiki/Airmatic

Small leaks in the rubber airbag (i e. the spring/strut itself) are quite common as well. Spray soapy water wherever you can, and keep an eye out for bubbles.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth