BMW Coupes and Sedans 1970-1988 Repair Guide

Windshield Wiper Motor

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The electric wiper motor assembly is located under the engine hood, at the top of the cowl panel. A few models have covers over the wiper motor assembly, while others have the motors exposed. Link rods operate the left and right wiper pivot assemblies from a drive crank bolted to the wiper motor output shaft.

REMOVAL & INSTALLATION



1600, 2000 and 2002 Models

See Figure 1

The motor is accessible from the engine side of the firewall.

  1. Disconnect the negative batter cable.
  2.  
  3. Remove the nut which retains the drive crank linkage to the motor, and disconnect the drive crank.
  4.  
  5. Remove the 3 mounting bolts for the motor.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Common 2002 wiper motor. On these models, there is no protective cover over the motor assembly

  1. Label and disconnect the 3 electrical leads from the clear plastic socket connection. Loosen the retaining screw for the ground wire and disconnect the ground wire from the body.
  2.  
  3. Lift out the wiper motor.
  4.  

To install:
  1. Install the wiper motor in position and install the 3 retaining bolts.
  2.  
  3. Connect the electrical leads and attach the ground wire.
  4.  
  5. Connect the drive crank. Reconnect the battery cable and check the operation of the wipers.
  6.  

2500, 2800, Bavaria, 3000 and 3.0 Models
  1. Remove the cover for the heater unit on the cowl panel, if equipped.
  2.  
  3. Remove the crank arm retaining nut and washer.
  4.  
  5. Remove the wiper motor retaining screws, tilt the motor downward and remove.
  6.  
  7. Disconnect the electrical contact plug from the wiper motor.
  8.  

To install:
  1. Connect the electrical contact plug to the wiper motor and install the motor.
  2.  
  3. Install the crank arm retaining nut and washer.
  4.  

The complete wiper motor, pivot assemblies and linkage can be removed as a unit, if necessary.

320i, 524td, 528e, 528i, 533i, 535i, 633CSi, 635CSi, M5 and M6 Models

  1. Remove the cowl cover to expose the wiper motor. This applies to 320i, 530i and all 5 and 6 Series models after 1983.
  2.  
  3. Disconnect the wiper motor crank arm from the motor output shaft by removing the nut and pulling off the crank arm.
  4.  
  5. Remove the motor retaining screws and disconnect the electrical connector.
  6.  
  7. Remove the wiper motor from the vehicle.
  8.  
  9. Reverse the procedure to install the motor.
  10.  

3 Series Models

See Figures 2 and 3

  1. Remove the wiper arm assembly.
  2.  
  3. Remove the heater blower motor and the bracket under the wiper motor.
  4.  
  5. Disconnect the motor wiring. If only removing the motor, remove the shaft nut and the 3 mounting nuts. Pull the motor out.
  6.  



Click image to see an enlarged view

Fig. Fig. 2: With the wiper arm removed, carefully pry up the grille cover



Click image to see an enlarged view

Fig. Fig. 3: When you remove the cover, the wiper motor is in the center of the hole

  1. Release the clips on the blower plate and disconnect the flaps to remove the blower plate.
  2.  
  3. Remove the wiper arms and the grill. Disconnect the links on the mount for the left pivot.
  4.  
  5. Remove the shaft covers and remove the nut. Remove the washer and pull the linkage out of the opening.
  6.  

To install:
  1. Install the linkage, washer and nuts. Install the shaft covers and connect the left pivot links. Install the grill and the wiper arms.
  2.  
  3. Install the blower plate and clip into place. Install the motor and link on the shaft.
  4.  
  5. Connect the wires, install the mount and the blower motor.
  6.  
  7. Install the wiper arm.
  8.  

5, 6 and 7 Series Models
  1. Cycle the wipers to return to the parked position. Turn the heater blower control to 0 and turn the ignition switch ON and OFF to close the heater box ventilation flaps. Remove the heater blower and remove the heater linkage cover.
  2.  
  3. Disconnect the negative battery terminal and disconnect the heater linkage. Pull out the temperature sensor. Remove the retainers to pull the inlet cowls out and remove the cover.
  4.  
  5. Disconnect the motor mounting brace. Remove the wiper arms. Remove the cowl cover retainers and the cover.
  6.  
  7. Loosen and remove the wiper arm shaft nuts. Disconnect the wiring plug. Pull the linkage out of the cowl.
  8.  
  9. Mark the relationship of the crank arm to the motor shaft and remove. Remove the 3 mounting bolts to remove the motor.
  10.  

To install:
  1. Install the motor to the linkage. If the position of the motor has been changed or a new motor is being installed, connect the motor to the electrical plug and cycle the motor once to return it to the parked position.
  2.  
  3. Install the crank arm to the original position as marked. If it is a new motor, align the crank arm with the linkage arm so they form a straight line.
  4.  
  5. Install the linkage in the cowl. Connect the motor electrical plug and install the wiper arm shaft nuts. Install the cowl cover and the wiper arms. Install the motor brace.
  6.  
  7. Install the inlet cowls and the cover. Install the temperature sensor and connect the heater linkage. Install the heater blower and connect the negative battery terminal.
  8.  

 
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