Sunroof - Modifed Drive Unit and Relay

88mercedes07

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)

FIGURE 2:

Figure 2 Wiring diagram, sliding/pop-up roof - modified 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
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 heater box (58d) (model 201)