Overview
This document contains information on:
General
Function requirements
Function
General
To ensure that no harmful gases can enter the vehicle interior after an accident, some climate control functions are no longer actuated and air-recirculation mode is started.
Function requirements
Circuit 15 ON
Climate control switched on
Function
If the SRS detects an accident, it sends the crash information to the climate control control system. The climate control control system then starts various activities depending on the equipment:
Switch off blower motor
Switch off booster blower
Close the fresh/recirculated air flap (air-recirculation mode)
Switch off the regulation valve of the refrigerant compressor
(Except on vehicles with alternative drive and refrigerant compressor with magnetic clutch)
Open the refrigerant compressor magnetic clutch
Switch off the PTC heater booster with the following equipment features:
Seat climate control for driver and front passenger
Seat heater for driver and front passenger
Stationary heater Plus for driver and front passenger (but not with normal stationary heater)
Hot country code
Alternative drive
On vehicles with alternative drive:
Deactivation of the high voltage PTC heater
Switch off the electric refrigerant compressor