64 51 591 Removing and installing/replacing evaporator

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 335xi, 2012 BMW 328xi, and 2012 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove Heater/Air Conditioner .

Carefully pull rubber grommet (1) and foam seal (2) over pipes (3) and (4).

NOTE: If necessary, replace rubber grommet (1) and/or foam seal (2).

Release screws (5).

Fig 1: Identifying Evaporator Pipes, Retaining Screws, Rubber Grommet And Foam Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Carefully remove seal (2) and all remnants.

Installation:

Replace seal (2).

Turn temperature sensor for cold-air distributor (3) in direction of arrow and detach in upwards direction. Expose connecting cable (4) of temperature sensor for cold-air distributor (3) towards rear of heater/air conditioner (5).

Fig 2: Identifying Temperature Sensor, Cable, Seal, Plug Connection And Heater/Air Conditioner

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove upper housing (2) of heater/air conditioner in direction of arrow.

Installation:

Make sure upper housing (2) is correctly seated on heater/air conditioner.

Fig 3: Identifying Evaporator Upper Housing And Retaining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Pull evaporator (1) in direction of arrow out of lower housing (2) of heater/air conditioner.

Installation:

Make sure evaporator (1) is correctly seated in lower housing (2) of heater/air conditioner.

Fig 4: Identifying Evaporator And Heater/Air Conditioner Housing

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not bend radiator fins.

If necessary, clean or straighten radiator fins with slat comb.