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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2704 (Cooling System - Repair - N51- E90) >> 1700 Coolant, Checking Cooling System >> 1700039 Venting cooling system and checking for water leaks (N52/N52K/N51/N53) >> Venting cooling system

Venting cooling system

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 328xi, 2010 BMW 328i, and 2009 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
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. (see Figure).
  7. Check COOLING SYSTEM FOR LEAKS .
  8. 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 from Point 3.
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