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Home >> Volvo >> 2002 >> V70 XC >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Alarm System, Control Modules, Engine Management Systems - Design And Function >> Central Electronic Module (CEM) (2005-2007) >> Function >> Fuel driven parking heater
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Fuel driven parking heater

Fig 1: Fuel Driven Parking Heater Communication Diagram
GLL146631Courtesy of VOLVO CARS OF NORTH AMERICA.

The driver sets the desired departure time using one of the two timer functions in the display on the driver information module (DIM) (5/1). The time is programmed by twisting the ring on the control stalk and by pressing the "reset" button for the desired time (timer 1, timer 2 or direct start). Direct start can also be used to start the heater.

The central electronic module (CEM) (4/56) receives data about when the driver wants to drive from the control stalk module (steering wheel module (SWM)) (3/254) and the driver information module (DIM).

The central electronic module (CEM) calculates when the heater needs to start so that it is warm enough in relation to the outside temperature. Information about temperature is obtained from the outside temperature sensor in the right-hand door mirror. This sensor is connected to the driver door module (DDM) or passenger door module (PDM).

The central electronic module (CEM) calculates when the heater needs to start:

When the heater is started directly using the control stalk it runs until it is shut off or for a maximum of 60 minutes. The heater is on for 10 minutes after the set time to allow for the driver getting to the car late.

A text message is displayed in the driver information module (DIM) when the heater is running.

Remote start of parking heater (Applies from and incl. structure week 201020) 

With remote start of parking heater it is possible to set timers for the parking heater as well as direct start of the parking heater via a computer with internet connection or via mobile telephone. Only applies to vehicles with Phone module (PHM).