64 51 001 Cleaning evaporator

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

64 1 480 . See HEATING AND AIR CONDITIONING - SPECIAL TOOLS .

WARNING: When handling cleaning agent, observe following protection measures:
Wear protective rubber gloves and protective goggles.
If cleaning agent comes into contact with eyes or skin, wash immediately with lots of water.

IMPORTANT: To avoid dirtying vehicle interior:

Close all air vents.
Switch heating - A/C system to recirculated-air mode.

Recycling:

Carry out the cleaning operation in a suitable washing bay as the emerging cleaning agent escapes through the drain openings in the transmission tunnel.

After completing cleaning, allow car to drip-dry for approx. 5 minutes.

Necessary preliminary tasks:

Remove fresh air duct

Partially detach transmission underbody protection (6) for draining cleaning fluid:

Release screws (2... 4) in rear area and press heat shield (5) away.

Fig 1: Identifying Transmission Underbody Protection

Courtesy of BMW OF NORTH AMERICA, INC.

Connect special tool 64 1 480 (spray lance) to spraying equipment.

Insert spray lance (1) through opening (2) to fresh air duct.

By moving spray lance (1) back and forth, spray a uniform amount of cleaning agent onto evaporator.

Fig 2: Identifying Spray Lance

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After rinsing with water, blow out evaporator with spray lance and air only for approx. 5 minutes. Do this predominantly in the center of the evaporator to dry the fan motor behind.
Set heating - A/C system to footwell ventilation and fresh-air mode. Open windows/doors.
Start car and run heating - A/C system at maximum fan power for approx. 5 minutes in order to dry heating - A/C system.
In order to eliminate the last remnants of cleaning agent, repeat this procedure shortly before handover to the customer.