Normalize rear-end door closing control unit - AR72.20-P-7551-01T

If a new rear-end door closing control unit is installed, normalize it following installation

1. Close rear-end door manually.
2. Open rear-end door with aid of rear-end door handle (A12/1).

   Rear-end door moves up automatically to garage position.

3. Pull driver-side trunk lid open/close switch (S15/3) in driver's door lining until rear-end door is moved up completely and switches off automatically.

   The rear-end door requires approx. 5 s to move up and this can be recognized by a clearly recognizable "relaxation" of the rear-end door in the open state.

4. Reprogram garage position via instrument cluster.

   See Operating instructions (opening limiter for rear-end door)

Fig 1: Identifying Rear-End Door Handle And Trunk Lid Open/Close Switch

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.