Pneumatic System: Service and Repair

AR80.20-P-2700M Remove/Install PSE Control Module (A37/2-A37/5)

Illustrated On Model 220:

1 Remove paneling in trunk

NOTE: except right side paneling and rear wall paneling

2 Press apart plastic lugs (arrows) and remove foam cap (1)
3 Unclip pneumatic strips (2, 3) on pneumatic control module with PSE control module (combined) (A37)

NOTE: Clips are located in the oblong holes marked with arrows. Unclip with flat tool, e.g. screwdriver

4 Loosen electrical connector (4) on PSE control module (combined) (A37) and remove lead

NOTE: Turn in direction of arrow

5 Remove PSE control module (combined) (A37)
6 Install in opposite order

NOTE: If the PSE is replaced version coding must be accomplished via STAR DIAGNOSIS

7 Check central locking, lumbar support or multicontour backrest, power locking, head restraint extension and retraction for proper function.