64 51 591 Removing and installing/renewing evaporator

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 030

Necessary preliminary tasks:

Remove heater/air conditioner . See 64 11 206 REMOVING AND INSTALLING/REPLACING HEATING AND AIR-CONDITIONING UNIT (N20, N26) or 64 11 206 REMOVING AND INSTALLING/REPLACING HEATING AND AIR-CONDITIONING UNIT (N47)

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

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

Fig 1: Identifying Rubber Grommet And Pipes

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Release screws (1).

Unlock plug connection (4) and disconnect.

Remove actuator drive (2).

Installation note:

Make sure actuator drive (2) is correctly seated in guide (3).

Fig 2: Identifying Screws, Actuator Drive, Guide And Plug Connection

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Release screws (1) and remove holder (2) for controller drive.

Installation note:

Make sure flap mechanism is correctly seated (see arrows).

Fig 3: Removing Holder

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Release screw (1).

Open holder (2).

Fig 4: Removing Double-Pipe

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Loosen clasp (1).

Remove double-pipe (2).

Installation note:

Replace clasps (1) and sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Fig 5: Identifying Clasps And Double-Pipe

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Release plug connections - actuator drives at the marked points and disconnect.

Unfasten plug connection - control unit (1) and disconnect.

Fig 6: Releasing Control Unit Plug Connection

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Unfasten plug connection - actuator drive (1) and disconnect.

Disconnect plug connection - temperature sensor (2) and remove temperature sensor from the heating and air conditioning unit.

Fig 7: Identifying Actuator Drive And Temperature Sensor

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Release screws (1).

Fig 8: Identifying Screws

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Release screws (1).

Fig 9: Identifying Screws

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Release screws (1).

Unlock the distributor housing (2) at the marked points.

Remove distributor housing (2).

Installation note:

Ensure that the distributor housing (2) is correctly seated and locked.

Fig 10: Removing Distributor Housing

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Release screws (1).

Unlock latch mechanisms using a slotted screwdriver.

Remove housing (2).

Fig 11: Identifying Housing And Screws Position

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Release screws in marked area.

Fig 12: Identifying Screws

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Unlock the latch mechanisms (3) in the marked areas with a slotted screwdriver (2) (approx. 3 mm blade).

Remove upper housing section (1).

Fig 13: Removing Upper Housing Section

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Installation note:

Retaining lugs (2) and guide pins (3) must not be damaged.

In the event of damage, replace the complete empty housing (1).

Fig 14: Identifying Retaining Lugs And Guide Pins Of Housing

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Pull evaporator (1) in direction of arrow out of lower housing section (2) of heating and air-conditioning unit.

Installation note:

Ensure evaporator (1) is correctly seated in lower housing section (2) of heating and air-conditioning unit.

Fig 15: Pulling Evaporator From Lower Housing Section

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IMPORTANT: Do not bend the evaporator fins.
If necessary, clean or straighten evaporator fins with slat comb.