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Switch panel (737a)

Switch panel (737a)

Location

Switch panel (737a)

Main task

Functions in the switch panel:

Functions are dependent on car equipment level.


• adjust the brightness of the instrument illumination

• turn on or off extra equipment (4D)

• operate the soft top (CV)

• Night Panel (extinguishes certain parts of instrument illumination)

• Indicates passenger airbag ON/OFF, used by PPS (Passenger Presence System), certain markets

• ESP temporarily disengaged, certain variants

• Sport mode for automatic transmission, certain variants


Type

Switch panel appearance is tied to the equipment level of the car.




For some markets, the switch panel contains LEDs that are used by the PPS control module to indicate whether the passenger airbag is ON or OFF.

The switch panel has one 12-pin connector.

Connection

Pin No.
Signal type
Description
1 Power supply (+15) Power supply from IPEC
2 Input signal, indicator lamp, Passenger Airbag ON (612a) The PPS control module grounds pin 1 to turn on the LED.
3 Input signal, indicator lamp, Passenger Airbag OFF (612b) The PPS control module grounds pin 1 to turn on the LED.
4 Ground
5 Output signal, TCS/ESP or SPORT, dependent on market and transmission alternative. Temporary disengagement of TCS/ESP or Sport mode for automatic transmission. Signal to BCM.
6 Output signal, brightness adjustment of instrument lighting Instrument lighting rheostat. Signal to BCM.
7 Background illumination Signal from BCM.
8 Output signal, soft top up/down Soft top up/down. Signal to STC.
9 Ground, soft top
10 Output signal For options/accessories, e.g. spotlights
11 Output signal, Night Panel Night panel, off/on. Signal to MIU.
12 Input signal, indicator lamp, seat belt warning Illuminates the seat belt warning lamp. Signal from MIU.


Wiring diagram