This is a pneumatic system & there is a pump under the rear seat.
Make sure that fuses # 3 & 11 in the trunk are OK.
Do any other functions of this system work?? ie; chrome handle on trunk, back-up antennas, fold-down rear headrests, or lumbar seats control??
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)