420SEL (126.035) V8-4.2L (116.965) (1986)
Sunroof / Moonroof Motor: Technical Service Bulletins
Sunroof - Modifed Drive Unit and Relay
TO:
OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE:
November 1988
SUBJECT:
MODIFIED SLIDING/POP-UP ROOF DRIVE UNIT AND RELAY MODELS 124, 126, 201
REF. NO. 77/16, 82/50
As of March 1988, a modified sliding/pop-up roof drive unit and a 6-pole relay (previously 8-pole) have been installed in these vehicles. These parts can
also be installed in models prior to prior to production phase-in. The respective part numbers remain unchanged.
Modifications
Part name
Previous version
Modified version
Drive unit
3 wires
2 wires
Relay
8-pole
6-pole
Microswitch
3 (colorless)
2 (red & yellow)
speed stages
2 stages
1 stage
Suppressor
resistors in relay
-
2
The drive units and relays of the previous and modified versions are interchangeable, whereby the drive unit will operate at one speed only.
FIGURE 1
Figure 1 Wiring diagram, sliding/pop-up roof - previous version
M 12
Sliding/pop-up roof drive unit
M 12m1 Sliding/pop-up roof motor
M 12k1
Sliding/pop-up roof relay
M 12s1 Microswitch, "down" position M 12s2 Microswitch, "closed" position M 12s3 Microswitch, 2nd speed
W 6
Ground, left rear wheelhousing
S 13/2
Sliding/pop-up roof switch
a
Connector of electrical equipment, terminal 5 (15R) (models 124, 126)
Electrical center, connector N (15R) (model 201)
b
Connector for electrical equipment, terminal 4 (58d) (models 124, 126)
Terminal block on beater box (58d) (model 201)