Section 1 (Automatic A/C-Heater Systems): Description
WARNING: This page is about a different car, the 1998 Mercedes-Benz C43, 1998 Mercedes-Benz C280, and 1998 Mercedes-Benz C230. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG SYSTEM SAFETY article in GENERAL SERVICING.
CAUTION:
When battery is disconnected, radio will go into anti-theft protection mode. Obtain radio anti-theft protection code from owner prior to servicing vehicle.
The automatic A/C-heater system consists of electrostatic dust filter, A/C push-button control module, blower motor, A/C-heater blower unit, A/C compressor, switchover valve block, duovalve, auxiliary coolant pump, in-vehicle temperature sensor with aspirator motor, engine coolant temperature sensor, heater core and evaporator temperature sensors, refrigerant pressure sensor, outside (ambient) temperature sensor, auxiliary (condenser) fan relay modules and resistor, and auxiliary (condenser) fans. Residual Engine Heat Utilization (REST) mode can warm cabin with residual heat when car is off.