6451591 Removing and installing/renewing evaporator

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. 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: Pulling Rubber Grommet And Foam Seal Pipes

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 Plug Connection, Temperature Sensor, Cold-Air Distributor And Seal

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: Removing Upper Housing Of Heater/Air Conditioner

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: Pulling Evaporator In Lower Housing Of Heater/Air Conditioner

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not bend radiator fins.

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