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I have looked into this at Alldata.com and also thought a bit more about it. The seats are really complex. There are all kinds of sensors (eg back rest position sensor). Here follows the instructions and a diagram. You will see the seats are not mounted to the floor but rather the transmission tunnel and door sill. This procedure gives you the seats, but not the electric adjustment of them, which looks phenomenally complicated. The seats are very comfortable!
Front seat (1)
move all the way to the front with forward/backward adjustment mechanism.
Screws (2, 3, 4, 7 and 8) (5 each)
unscrew on rear of seat rail at left and right 17 Nm.
Screw (9) (1 each)
unscrew at front on right seat rail 17 Nm.
Front seat (1)
allow to run toward rear with forward/backward adjustment mechanism.
Screws (5 and 6) (2 each)
unscrew at center and front of left seat rail. 17 Nm.
Ignition key
turn to zero position.
Negative pole on battery
disconnect and cover.
Red 10-pin connector in footwell
disconnect.
Connectors on control module (12)
disconnect, open cable straps and expose cable.
Front seat (1)
when removing first tilt toward outside and then lift out of vehicle together with a second person.
Reinstall
in opposite order.Observe installation note.
Installation note
The threads on the seat mounting screws (8 each) are micro-encapsulated. Following disassembly they must be replaced or coated with screw securing agent.
Tightening torque:17 Nm.
Observe the following sequence when tightening seat mounting bolts:
All bolts on outer seat rail on longitudinal member.
Both rear bolts on inner seat rail on tunnel floor.
Front bolt on inner seat rail on tunnel floor. Compensate gap resulting here between seat rail retaining bracket and tunnel floor console with washer, part no.129 984 00 56
Vehicles with airbag
When one or both front seats are removed (connectors to seat belt buckles must be disconnected) the SRS malfunction indicator lamp comes on when the ignition key is in position 1 or 2 and goes out when the seats are reinstalled after reconnecting the disconnected connectors.
This is stored as a malfunction in the control module for the airbag and emergency tensioning retractors. The memory must be erased after reinstalling the seats. See: Restraint Systems
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JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190
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