Residual engine heat utilization function - GF83.75-P-2000P
MODEL 203.0 /2 /7 up to 31.5.01 with CODE (581) Automatic air conditioning
MODEL 203.0 /2 /7 as of 1.6.01 with CODE (581) Comfort automatic air conditioning
MODEL 203.0 /2 /7 with CODE (450) Taxi version with CODE (670) Residual engine heat utilization (REST [MRA])
Function
Residual engine heat utilization enables the vehicle to be heated even when the ignition is OFF.
To do so, the residual engine heat utilization system uses the residual heat from the engine and routes it into the passenger compartment via the blower motor (A32m1). The residual engine heat utilization is only possible when the ignition is switched off.
After pressing the REST button on the HEAT [HAU] control and operating unit (N18) or the AAC [KLA] control and operating unit (N22) (with code (450) Taxi version or with code (670) Residual engine heat utilization system (REST [MRA]) or at the comfort AAC (C-AAC [KKLA]) control and operating unit (N22/7) the following program sequence is specified:
- Blend air flaps controlled
- Coolant circulation pump (M13) ON
- Blower motor (A32m1) automatically supplied with a control voltage of 30 %
- Defroster and footwell flaps are automatically adjusted for approx. 30 seconds
- Activated charcoal filter flap open (no activated charcoal filter operation possible in vehicles with comfort AAC (C-AAC [K-KLA]) control and operating unit (N22/7))
- Footwell flaps 100 % OPEN
- Defroster vent flaps 66 % OPEN
- Fresh air vents 20 % open
- Fresh air and air recirculation flap in fresh air position
End of program
- Repeated actuation of REST button
- Expiration of the time function of approx. 30 min. (repeated actuation possible)
- When battery voltage is less than 11 V, the LED on the REST button flashes on and off
- Ignition On
During residual engine heat utilization only the REST button and the set point adjusters can be actuated, all other function keys are locked.
| Heating push-button control unit, location/task | For vehicles without code (580) Air conditioning (or Tempmatic for USA) or without code (580) Automatic air conditioning or without code (581) Automatic air conditioning or without code (581) Comfort automatic air conditioning | GF83.20-P-2120PP | |
| Control and operating unit for automatic air conditioning, location/task | For vehicles up to 31.5.01 with code (580) Air conditioning (or Tempmatic for USA) or as from 1.6.01 up to 23.4.04 with code (580) Automatic air conditioning |
GF83.40-P-2180PP | |
| On vehicles as from 24.4.04 without code (581) Comfort automatic air conditioning |
GF83.40-P-2180PQ | ||
| Comfort automatic air conditioning control and operating unit, location/task | On vehicles up to 31.5.01 with code (581) Automatic air conditioning or as from 1.6.01 up to 23.4.04 with code (581) Comfort automatic air conditioning |
GF83.40-P-2181PP | |
| On vehicles as of 24.4.04 with code (581) Comfort automatic air conditioning |
GF83.40-P-2181PQ | ||
| Actuator motor automatic heater, location/task/function | For vehicles up to 23.4.04 without code (580) Air conditioning (or Tempmatic for USA) or without code (580) Automatic air conditioning or without code (581) Automatic air conditioning or without code (581) Comfort automatic air conditioning | GF83.25-P-2180P | |
| Actuator motors for automatic air conditioning, location/task/function | For vehicles up to 31.5.01 with code (580) Air conditioning (or Tempmatic for USA) or as from 1.6.01 with code (580) Automatic air conditioning or as from 24.4.04 without code (581) Comfort automatic air conditioning | GF83.40-P-2182P | |
| Actuator motors for comfort automatic air conditioning, location/task/function | On vehicles up to 31.5.01 with code (581) Automatic air conditioning or as from 1.6.01 with code (581) Comfort automatic air conditioning | GF83.40-P-2183P | |
| Blower motor, location/task/function | GF83.10-P-2140P | ||
| Heating system heat exchanger, location/task/ function | GF83.20-P-2108P | ||
| Heater water circulation pump, location/task/ function | GF83.20-P-2109P |