17 22 010 Removing and installing/replacing heat exchanger for automatic transmission

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

NOTE: For special tools, refer to COOLING SYSTEM - SPECIAL TOOLS - 645CI .

17 0 030

Necessary preliminary tasks:

Follow instructions for working on cooling system
Drain coolant from radiator
Remove engine underbody protection

Recycling

Catch and dispose of drained coolant.

Transmission fluid emerges when oil lines are detached from heat exchanger.

Catch and dispose of escaping transmission fluid.

Observe country-specific waste-disposal regulations.

Release catch (1) in direction of arrow.

Disengage mounting plate (2) in direction of arrow.

Fig 1: Releasing Catch And Disengaging Mounting Plate

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Engage mounting plate (2) in mounting (3).

Unlock hydraulic lines (1 and 2) on heat exchanger (3) with special tool 17 0 030 and disconnect.

Fig 2: Releasing Hydraulic Lines On Heat Exchanger With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Connect hydraulic line (2) with TOP marking to upper pipe of heat exchanger.

Release screws (1).

Remove heat exchanger (2) in direction of arrow.

Fig 3: Removing Heat Exchanger

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check fluid level in automatic transmission.

Top up coolant and vent cooling system.