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

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. 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 Catch, 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 0 030 and disconnect.

Installation:

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

Fig 2: Identifying 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 00 11 500 CHECKING/TOPPING UP FLUID LEVEL IN AUTOMATIC TRANSMISSION (GA6HP26Z/6HP32Z) .

Top up coolant and vent cooling system.