Additional Heater/Parking Heater

The heater can act as a additional heater or as a parking heater depending on the configuration of the vehicle. Additional heaters are standard in vehicles with diesel engines on some markets with a cold climate. The heat produced by the diesel engine is not sufficient to obtain a pleasant passenger compartment temperature.

Through the combustion of petrol or diesel the additional heater/parking heater produces heat. The heat is distributed by the engines cooling system to the heat exchanger and onward out into the passenger compartment.

When the engine is running, the additional heater can supply extra heat into the passenger compartment if the engine is not capable of supplying sufficient heat. When the engine is not running, the parking heater can preheat the passenger compartment (and the engine). This function can be started immediately or by using a timer.

A number of conditions need to be met to start the additional heater.

The parking heater is controlled via the steering lever. Information is displayed on the Driver information module (DIM).

The additional heater/parking heater is located in the front, right-hand wheel housing up against the A-pillar and covered by the plastic wheel arch liner.

1. control unit with fan and Combustion preheater module (CPM)
2. burner unit

The heater is connected to:

• the engine cooling system
• the fuel tank
• The controller area network (CAN)

The additional heater/parking heater is also equipped with a coolant pump. A fuel pump is located on the rear axle behind the fuel tank. The fuel pump is connected, without filters, to a separately prepared tank connection.