Preparing the replacement transmission

Preliminary work

Disconnect all battery GROUND LEADS .
If the active stabilizer is installed: remove fan COWL .
Remove rear UNDERBODY PROTECTION .
Remove the transmission side UNDERBODY PLANKING
Remove the tunnel connecting SUPPORT .
If installed: remove the right and left TORSION STRUT where required.
Remove complete EXHAUST SYSTEM .
Remove the HEAT SHIELDS .
Remove the RETAINING PLATES
Partially loosen the PROP SHAFT
Remove AUTOMATIC TRANSMISSION (AWD) (GA8HP50Z, GA8HP51Z).

CAUTION: Materials harmful to health.
Contact with fluids harmful to health!

Note and follow safety instructions on containers.
Conduct all work in appropriate personal protective equipment only.

NOTE: RISK OF DAMAGE
Damage to the transmission.
Damage to the transmission due to unapproved transmission oil.

Use only the approved TRANSMISSION OIL .
Check the transmission OIL LEVEL after completing the repair.

NOTE: TECHNICAL INFORMATION
Replacement transmissions come filled with oil

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

NOTE: TECHNICAL INFORMATION
After completion of the work, program the control unit for the electronic gearbox control (EGS).

NOTE: TECHNICAL INFORMATION
When installing a new or replacement transmission, flush the transmission oil cooler and lines.
For ADDITIONAL INFORMATION see: Flushing 17 21 500 transmission oil cooler and lines (automatic transmission)

Replace clamps (arrows) of sound insulation on the right.
Parts: Clamps
Remount the sound insulation on the right.

Courtesy of BMW OF NORTH AMERICA, INC.
Replace clamps (arrows) of sound insulation on the left.
Parts: Clamps
Remount the sound insulation on the left.
NOTE: TECHNICAL INFORMATION
After disassembling the transportation retainer, secure the torque converter against slipping out.

Courtesy of BMW OF NORTH AMERICA, INC.
Disassemble transportation retainers.
Remount all cable clips.
Remount all seal plugs.
Remount protective cap on output shaft.
Remount exhaust bracket.
Remount transmission mounting bracket.
If installed: Remount transfer box.
Make note of transmission identification (see BMW Group parts/catalog sales and nameplate).

Follow-up work

Install AUTOMATIC TRANSMISSION (all-wheel drive vehicle) (GA8HP50Z).
Fasten the (partially removed) PROP SHAFT
Install the RETAINING PLATES .
Install the HEAT SHIELDS
Install the complete EXHAUST SYSTEM .
If installed: install the right and left TORSION STRUT where required.
Install the tunnel connecting SUPPORTS .
Reconnect all battery GROUND LEADS .
Check/top up the automatic transmission OIL LEVEL .
If the active stabilizer is installed: install fan COWL .
Install rear UNDERBODY PROTECTION .
Install the transmission side UNDERBODY PLANKING .
ENCODE/PROGRAM control unit(s)