gf8879p2000fa

Heat left/right outside rearview mirrors function

Type gf · topic 88.79 · version 0100 · 2008-03-11

Applies to: MODEL 203.7 as of model year 09/YoM 08 model refinement package

Where it sits

Function group 3 Body › 88 Detachable body components, exterior flaps › 88.79 Exterior mirrors - electrical system — Series 203 (models 7**)

GF88.79-P-2000FA

Heat left/right outside rearview mirrors function

22.2.08

MODEL 203.7 as of model year 09/YoM 08 model refinement package

Function requirements, general

Circuit 61 ON

No overvoltage or undervoltage

On-board electrical system consumer shutoff not active

No active actuation of the power window

Heat left/right outside mirror, function sequence

The outside mirror heater is switched automatically depending on the outside temperature.

The outside temperature measured with the outside temperature indicator temperature sensor (B14) is read in by the front SAM control unit with fuse and relay module (N10/1) and transmitted as message to the interior CAN.

The left front door control unit (N69/1) and right front door control unit (N69/2) receive this value and switch the mirror heater (M21/1r1 and M21/2r1) on or off.

Switch-on condition:

- outside temperature < 15 °C

Switch-off condition:

- Outside temperature > 19 °C

If the outdoor temperature value received is not plausible, the mirror heater is always switched on under the following circumstances.

Electrical function schematic for mirror heater

PE88.79-P-2055-97FA

Front SAM control unit with fuse and relay module, component description

N10/1

GF54.21-P-6070FA

Left front door control unit, component description

N69/1

GF72.29-P-4141FA

Right front door control unit, component description

N69/2

GF72.29-P-4142FA

Component description for the outside temperature display temperature sensor

B14

GF83.57-P-4002FA

Outside mirror, component description

M21/1, M21/2

GF88.79-P-4003FA

Referenced documents