Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Starting the parking heater via the timer
The left control lever controls the start timer for the parking heater. No other timer is required when setting the timer control. The control lever is directly connected to the steering wheel module (SWM) (3/130) which sends a signal via the CAN-net to the central electronic module (CEM), which in turn sends the signal on to the accessory electronic module (AEM) (4/78) when it is time to start the electric heater.
The start timer functions on either the electric or fuel-driven parking heater (not XC90). The accessory electronic module (AEM) is not involved when the fuel-driven parking heater is selected. The heater to be used is selected in the driver information module (DIM) (5/1).
It is also possible to combine this function with the remote start function.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.