Mirror Lens Adjustment Left/Right Outside Mirror, Function - GF88.79-P-2008GW

Model 463 (except 463.342) 

as of model year 2013 

Function requirements, general 

• No overvoltage or undervoltage
• Circuit 15R ON
• Storage of mirror glass position not active
• Valid mirror selection available

The circuit 15 status is sent by the electronic ignition lock control unit (N73) over the interior CAN (CAN B) to the left front door control unit (N69/1).

Mirror lens adjustment left/right outside mirror, general 

The mirror glass in the left outside mirror (M211) and right outside mirror (M212) can be adjusted electrically.

The left/right outside mirror glass adjustment comprises the following partial functions:

• Adjust mirror glass 
• Storing/calling up mirror glass position 

Adjust mirror glass 

The corresponding outside mirrors are selected via the left outside mirror adjustment switch (S20s10) or right outside mirror adjustment switch (S20s11) in the driver side power window and outside mirror adjustment switch group (S20).

The selected outside mirror is indicated by an LED in the corresponding outside mirror adjustment switch. The selected outside mirror can be adjusted to the desired position with the outside mirror adjustment switch S20s12. The position can be adjusted horizontally and vertically.

The left door control unit reads in the adjustment request for the corresponding outside mirror via the left front door LIN (LIN B5) and transmits the request for the right outside mirror via the interior CAN to the right front door control unit (N69/2)

The left front door control unit actuates the vertical inclination adjustment actuator motor (M21/1m1) and horizontal inclination adjustment actuator motor (M21/1m2) in the left outside mirror.

The right front door control unit actuates the vertical inclination adjustment actuator motor (M21/2m1) and horizontal inclination adjustment actuator motor (M21/2m2) in the right outside mirror.

Storing/calling up mirror glass position 

The storing/calling up mirror glass position function comprises the following subfunctions:

• Store mirror glass position 
• Calling mirror glass position 

Store mirror glass position 

The mirror glass position can be stored as follows:

• Press and keep pressed the left front memory function switch (S22s6) in the left front seat adjustment switch group (S20). Then press left front memory switch 1 (S22s7), left front memory switch 2 (S22s8) or left front memory switch 3 (S22s9).
• Press memory switch function at front left for longer than 100 ms. Then press left front memory switch 1, left front memory switch 2 or left front memory switch 3 within 0.2 to 3 s.

The status of the switches is read in by the left front door control unit over the left front door LIN.

The mirror glass position is defined according to the following components and is stored in the left front door control unit or right front door control unit:

• Vertical inclination adjustment potentiometer (M21/1r2)
• Horizontal inclination adjustment potentiometer (M21/1r3)
• Vertical inclination adjustment potentiometer (M21/2r2)
• Horizontal inclination adjustment potentiometer (M21/2r3)

When saving the mirror glass position, the instrument cluster (A1) outputs an acknowledgment tone, as of 03.04.2018 via the instrument cluster speaker (H4/61). The driver's seat control unit (N32/1) will as of 03.04.2018 transmit the request for this purpose via the interior CAN, electronic ignition lock control unit and user interface CAN to the instrument cluster and up to 02.04.2018 via the interior CAN to the instrument cluster.

Parallel to the mirror glass position, the position of the driver seat and steering column is stored in the driver sear control unit.

Additional function requirements for calling mirror glass positions 

• Door status changed (run-on active)

Calling mirror glass position 

A stored mirror position can be called up via one of the memory switches.

For this purpose, actuate one of the memory switches until the stored position is reached.

Actuation of the memory switch is read in by the left front door control unit and transmitted to the driver seat control unit via the interior CAN. This requests the left front door control unit and right front door control unit to move the mirror glasses to the stored position via the interior CAN.

The left front door control unit actuates the vertical inclination adjustment actuator motor and the horizontal inclination adjustment actuator motor in the left outside mirror.

The right front door control unit actuates the vertical inclination adjustment actuator motor and horizontal inclination adjustment actuator motor in the right outside mirror.

If circuit 15R is switched off, the mirror glass position can still be called for 180 s. The run-on time starts again, if a circuit status changes (e. g. from circuit 15C ON to circuit 15C OFF) or the door status changes during the run-on time.

Even in the event of a change in the door status or a change in the circuit status after an optional amount of time, the run-on phase starts again, which means that even prior to driving off, the mirror glass positions can be adjusted after opening a door without switching on circuit 15Rfor 180 s.

	Electrical function schematic for mirror lens adjustment		PE88.79-P-2051-97ZGA
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