17 11 120 Removing and installing/replacing cooler for charge air cooler (N63 B40/B44 O 0/1, N74)

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750i, and 2015 BMW 750Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of scalding!
Only perform this repair work after engine has cooled down.

IMPORTANT: When carrying out repair work on the coolant circuit, protect the alternator from dirt contamination.

Cover alternator with suitable materials.

Failure to comply with this procedure may result in an alternator malfunction.

Necessary preliminary tasks

Remove COOLING LOOP for hydraulic steering (not ALPINA B7).
Drain coolant for charge air cooler.

Release and disconnect coolant hoses (1).

Release lock (2).

Pull lines (3) with holder upwards.

Fig 1: Identifying Coolant Hoses, Pressure Lines And Locks

Courtesy of BMW OF NORTH AMERICA, INC.

Lift out radiator for charge air cooler (1).

Fig 2: Lifting Out Radiator For Charge Air Cooler

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

After completing repair work, top charge air cooler up with coolant.

Vent COOLING SYSTEM FOR CHARGE AIR COOLER .

Check cooling system for tightness.

Assemble engine.