BetaSteve

Trunk soft close, door locks and seat bolsters weren’t working. Pull the fuse to reset air pump, activated trunk manually, yep, obvious air leak. Cycled it maybe half a dozen times before the protection circuit cut power to the pump. Repaired the air leak, soft close and door locks work great now. No seat functions though, don’t hear any air leaks and the pump continues to operate properly when requested. The little control panel causes audible solenoid clicks with each function toggle and the light comes on with the pulse button. Both seats have open ended airlines coming out of the wiring harness, far too short to reach anything else. Any suggestions from those who’ve dealt with this would be greatly appreciated!

Burkekernen

I did a search online and there is a common problem with the seats. Under the seat is the air line that goes to the bolsters, lumbar, message etc... it has a service loop in it so the seat can slide back and forth. The line always cracks right at the service loop bend. I patched that hose and now am my seat functions work. This line should go all the way to the switch module you show in your image.

The seat is hard to take out though.