Thread: Problems Setting Side Rest

The side rest adjustments does not work 90% of the times. The active drive adjustments i've only gotten to work once so far. Finally the lumbar adjustments work like 70% of times and seem to deflate on it's own after extended periods of driving. Massage and other features seem to be working fine. Any ideas what could be wrong b4 I resort to the dealer? BTW this is the driver's seat of a w221.

Thanks in advance,
Rasheed

Sounds like a leak but that doesnt make sense to me. If it was a leak it would still inflate unless the air pump overheats.