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

WARNING: This page is about a different car, the 2009 BMW 528xi, 2009 BMW 528i, 2008 BMW 528xi, and 2008 BMW 528i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

17 0 030 See COOLING SYSTEM - SPECIAL TOOLS .

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.

Installation:

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

Fig 1: Identifying Mounting Plate And Mounting

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

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

Fig 2: Identifying Special Tool (17 0 030) And Hydraulic Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove heat exchanger (2) in direction of arrow.

Fig 3: Identifying Heat Exchanger And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check fluid level in automatic transmission, refer to MAINTENANCE AND GENERAL INFORMATION MG00.

Top up coolant and vent cooling system.