Wipers

Wipers
The wiper system has been modified for use in the (E83) X3 SAV. The GM5RD controls front wiper and washer operation as well as headlight washer operation. The rear wiper and rear washer are controlled by a wiper module with operation requested directly by the wiper switch.


Wiper Relay
The dual relay is located in the EBox.

SRA Relay
The SPA (headlight washing system) relay is located in the glove box fuse carrier.

Heated Wiper Nozzles
The heating element of the front washer nozzles are switched by an inline ambient temperature sensor via terminal 15. The current draw of the heating elements is controlled by a PTC resistor as a function of temperature.





Wipe and Wash Circuit Diagram



Headlight Washer System
The headlight washer system is switched on and off using the windshield washer switch.
The GM5RD switches the headlight washer pump on if terminal 58g is active, every fifth time the windshield is washed.


Rear Window Wiper
The rear window wiper is controlled by the rear wiper module. The rear wiper module is the same as used on the E46 (3 series) sport wagon.

Door Mirrors





There are two door mirror versions fitted to the (E83) X3 SAV. The low version (standard) door mirrors have the following functions:
^ Electric mirror adjustment
^ Mirror heating
The high version (optional) door mirrors have the following functions:
^ Electric mirror adjustment
^ Mirror heating
^ Mirror folding
All mirror functions for both exterior mirrors are controlled by the GM5RD. The GM5RD makes all decisions concerning mirror movement and passes instructions to the mirror electronics (contained in the mirrors) via the LIN bus.
Potentiometers in the mirror electronics monitor position. Current position is sent to the GM5RD on a cyclical basis, and last mirror position is stored in the GM5RD.
The mirror switch in the SOFA communicates with the GM5RD via the LIN bus.