Preparing the replacement transmission

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: TECHNICAL INFORMATION
When the engine is stopped after the completion of trip, it may be necessary to run the electric fan. In rare cases, operation of the electric fan can last up to 11 min. This protects the components. In this case, replacing the electric fan will not remedy the problem!

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING SUSPENSION STRUT BRACE .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE FRONT SPOILER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE LEFT AND RIGHT FRONT UNDERSHIELD .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING THE RIGHT HAND FRONT BOTTOM SIDE COVER .
Refer to REMOVING THE FRONT-END STRUT .
Refer to REMOVING THE LEFT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
Refer to REMOVING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
Refer to REMOVING SEAL FOR FRONT HOOD .
Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE RIGHT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
Refer to DRAINING THE COOLANT FOR THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to PARTIALLY INSTALLING THE COOLANT EXPANSION TANK OF THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING THE OXYGEN SENSOR MONITOR FOR THE CYLINDERS 4 TO 6 .
Refer to REMOVING THE FAN COWL .
Refer to REMOVING THE CHARGE AIR DUCT FOR CYLINDERS 1-3 .
Refer to REMOVING THE CHARGE AIR DUCT FOR CYLINDERS 4-6 .
Refer to REMOVING THE CHARGE AIR CROSSING .
Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING INTERMEDIATE PIPE .
Refer to RELEASING THE TRANSMISSION BEARING SUPPORT .
Refer to REMOVING TRANSMISSION CROSS-MEMBER .
Refer to REMOVING THE TANK COVER .
Refer to REMOVING THE LEFT THRUST FIELD .
Refer to REMOVING THE REAR HEAT SHIELD .
Refer to REMOVING FRONT HEAT SHIELD .
Refer to REMOVING STARTER MOTOR .
Refer to PARTIALLY LOOSENING THE PROP SHAFT .
Refer to RELEASING THE FRONT PROP SHAFT ON THE FRONT AXLE TRANSMISSION .
Refer to REMOVING THE TRANSFER BOX .
Refer to REMOVING AUTOMATIC TRANSMISSION (GA8HP76Z) .

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 appropriate BMW Group parts sales and nameplate).

Follow-up work

Refer to INSTALLING THE AUTOMATIC TRANSMISSION (GA8HP76Z) .
Refer to INSTALLING THE TRANSFER BOX .
Refer to INSTALLING FRONT PROPELLER SHAFT AT THE FRONT AXLE TRANSMISSION .
Refer to FASTENING THE PROP SHAFT (PARTIALLY REMOVED) .
Refer to INSTALLING STARTER MOTOR .
Refer to INSTALLING FRONT HEAT SHIELD .
Refer to INSTALLING THE REAR HEAT SHIELD .
Refer to INSTALLING THE LEFT THRUST FIELD .
Refer to INSTALLING TANK COVER .
Refer to INSTALLING TRANSMISSION CROSS MEMBER .
Refer to INSTALLING THE TRANSMISSION BEARING SUPPORT .
Refer to INSTALLING THE INTERMEDIATE PIPE .
Refer to INSTALLING EXHAUST SYSTEM .
Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
Refer to INSTALLING THE CHARGE AIR LINE .
Refer to INSTALLING THE CHARGE AIR DUCT FOR CYLINDERS 4-6 .
Refer to INSTALLING THE CHARGE AIR DUCT FOR 1-3 CYLINDERS .
Refer to INSTALLING FAN COWL .
Refer to CONNECTING THE COOLANT LINE TO THE RADIATOR .
Refer to INSTALLING THE OXYGEN SENSOR MONITOR FOR CYLINDERS 4 TO 6 .
Refer to PARTIALLY REMOVING THE COOLANT EXPANSION TANK OF THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to INSTALLING THE RIGHT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
Refer to INSTALLING UPPER CROSS CONNECTION .
Refer to INSTALLING THE CENTER ENGINE COMPARTMENT COVER .
Refer to INSTALLING THE FRONT HOOD SEAL .
Refer to INSTALLING THE INTAKE FILTER HOUSING ON THE LEFT (FRONT-END STRUT REMOVED) .
Refer to INSTALLING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
Refer to INSTALLING THE FRONT-END STRUT .
Refer to FILLING AND VENTING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
Refer to CONNECTING ALL BATTERY GROUND LEADS .
Refer to CHECKING/TOPPING UP THE OIL LEVEL IN THE AUTOMATIC TRANSMISSION .
Refer to INSTALLING THE BOTTOM FRONT RIGHT SIDE COVER .
Refer to INSTALLING THE STIFFENING PLATE .
Refer to INSTALLING THE LEFT AND RIGHT FRONT UNDERSHIELD .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to INSTALLING THE FRONT SPOILER .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING THE STRUT BRACE .
Refer to TAKING HOOD OUT OF THE SERVICE POSITION .