gf8879p1001a

Heating of mirror glass of outside mirror, basic function

Typ gf · téma 88.79 · verze 0104 · 2020-07-08

Platí pro: Model all (CAR)

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 3 Nástavba › 88 Nástavbové díly, vnější víka › 88.79 Elektrická část vnějších zpětných zrcátek — Řada 900 (modely 9**) · Řada 902 (modely 9**) · Řada 904 (modely 918, 919, 924, 925, 938, 943, 957) · Řada 906 (modely 917, 918, 924, 953)

Platí také pro motory/převodovky: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

GF88.79-P-1001A

Heating of mirror glass of outside mirror, basic function

23.06.2020

Model

all (CAR)

Overview

This document contains the following information:

General

Function requirements

Heating of mirror glass of outside mirror

General

The mirror heater heats the mirror glass of the outside mirrors. This allows ice or snow on the mirror glass to be defrosted and counteracts fogging of the mirror glass.

Function requirements

Circuit 15R ON (except for pre-entry climate control for hybrid vehicles, electric vehicles)

Engine running or drivetrain operational (for temperature-dependent switch-on).

Heating of mirror glass of outside mirror

The mirror heater is switched on and off together with the rear window heater. It can also be switched on and off automatically depending on the outside or dew point temperature.

The dew point temperature is the temperature at which the water vapor in the outside air condenses. The mirror glass becomes fogged when its surface temperature is lower than the dew point temperature.

In hybrid vehicles and electric vehicles, the mirror heater can also be switched on and off as part of pre-entry climate control.

Condition

Operating period

Additional information

Rear window heater active

According to the operating lifespan of the rear window heater

-

Pre-entry climate control activated (hybrid and electric vehicles)

According to the operating lifespan of pre-entry climate control

-

The dew point temperature is between 2 and 5 °C below the outside temperature

Approx.10 min

If the value of the dew point temperature is implausible or not available, a substitute dew point value is used.

Outside temperature below 15 °C

Approx.10 min

If the value of the outside temperature is implausible or not available, the mirror heater is switched on permanently.

Should the mirror glass become fogged after the automatic actuation of the mirror heater is stopped, the mirror heater can be switched on again via the rear window heater.

If the on-board electrical system is in a state of undervoltage. the mirror heater is switched off via the consumer reduction feature of energy management.

Function schematics

Function schematic, heat mirror glass of outside mirror

Model 118, 167, 177, 247, 293Model 213, 238, 257, 290 as of model year 2021

PE88.79-P-2502-97A

Further basic functions

Reduce consumers, basic function

GF54.10-P-1011A

Rear window heating, basic function

GF67.29-P-9900A

Control units

Front door control unit, basic function

GF72.29-P-9891A

Components

Outside mirror, basic function

GF88.79-P-2014A

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