How to bleed the electric water pump on a Volvo XC60?
2 Answers
The bleeding method for the Volvo XC60 electric water pump is as follows: 1. During filling, open the bleed screw of the auxiliary water tank, the coolant evaporator, and the transmission coolant vent screw until no bubbles are visible, then tighten them to enter the bleeding phase. 2. Connect the charger, turn the ignition switch to the second position, set the air conditioning fan to the lowest setting, adjust the temperature to the maximum, turn on the low beam headlights, and press the accelerator pedal for about ten seconds. You will then hear the sound of water being expelled from the auxiliary water tank. The water pump will run for a while to expel the air from the engine. 3. Note: Bleeding the electric water pump must be performed when the engine is in a cold state.
The exhaust electric water pump sounds complicated, but there are tricks to operating it. Last time I serviced my Volvo XC60 myself, I specifically studied this procedure. Make sure the engine is completely cooled down - never open the expansion tank cap on a hot engine, as high-pressure steam can blister your hands. Park the car on a slope or use a jack to raise the front end, positioning the expansion tank at the highest point. After starting the vehicle, don't rush to activate the water pump immediately. First, set the heater to maximum temperature but lowest fan speed to allow thorough coolant circulation. You'll observe the coolant level repeatedly dropping and rising - this is when you need to keep adding genuine coolant. After about ten minutes when the radiator fan starts running, indicating the system has reached temperature, continue topping up until the level stabilizes. The whole process requires patience; any remaining air bubbles could lead to serious engine overheating. Finally, remember to use a dedicated diagnostic tool to activate the water pump for complete air bleeding - this is a special requirement for electric water pumps.
