Remote Control Cars FFBH
| Pos. | Spare part number | Name |
| 1 | - | Automatic Temperature Control (ATC) module |
| 2 | - | Fuel fired auxiliary heater (FFBH) |
| 3 | - | Additional coolant pump |
| 4 | - | Outside air temperature sensor |
| 5 | - | Additional fuel pump |
Vehicles from 2009 model year with FFBH remote control
| Pos. | Spare part number | Name |
| 1 | - | Automatic Temperature Control (ATC) module |
| 2 | - | Fuel fired auxiliary heater (FFBH) |
| 3 | - | Additional coolant pump |
| 4 | - | Outside air temperature sensor |
| 5 | - | Additional fuel pump |
| 6 | - | FFBH receiver |
| 7 | - | FFBH Antenna Matching Block |
The fuel-fired auxiliary heater (FFBH) has a power of 5 kW and compensates for the relatively low coolant temperature inherent in the diesel engine. The unit is located behind the right-hand (RH) wing splash guard and heats the engine coolant exiting the heater core.
The fuel-fired auxiliary heater is controlled by the Automatic Temperature Control (ATC) module via the medium-speed CAN bus. The operation of the FFBH is affected by:
- Outside air temperature
- Engine coolant temperature
The fuel-fired auxiliary heater starts operating when the outside temperature is below 5°C and stops operating when the outside temperature reaches 8°C. The fuel-fired auxiliary heater can also be inhibited when the fuel level drops below a preset level.
Remote control operation
On vehicles from the 2009 model year onwards, the FFBH has a remote control mode. The remote control system includes an add-on FFBH receiver, FFBH antenna matching unit and remote control to provide operation. The FFBH unit is retained but has updated software. In addition, the engine control module (ECM) has updated software calibration. The instrument cluster message center displays FFBH messages when needed.
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