Welcome to X!


This is your X5 venting procedure:


17 00 039 Venting cooling system (N52/ N52K/ N51/ N53)


Venting cooling system:
Note: Do not open the coolant expansion tank cap during the venting procedure.


1-Connect battery charger.
2-Switch on ignition.
3-Set heater to maximum temperature and turn fan down to lowest speed.
4-Press accelerator pedal for 10 seconds to floor. Engine must not be started.
5-The venting procedure is started when the accelerator pedal is pressed and takes approx. 12 minutes.(Electric coolant pump was activated and shuts down automatically after approx. 12 minutes).
6-Then top up fill level in coolant expansion tank with 100 ml above max. (Approximately 6 mm above the max level )

Check cooling system for leaks.

If venting has to be carried out again (e.g. if cooling system is leaking), allow DME to fall completely (leave ignition key removed for approx. 3 minutes), then repeat the venting procedure.



Only when venting!
Perform filling operation slowly.
Fill coolant expansion tank with 100 ml above max.



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