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Home >> BMW >> 2025 >> 230i >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (On-Vehicle Servicing - (A5S 360R/390R)) >> Removal & Installation >> Removing And Installing/Replacing Shift Unit (A5S 325Z)

Removing And Installing/Replacing Shift Unit (A5S 325Z)

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NOTE: Numbers in text refer to numbers in figures.
NOTE: After completing work, top up ATF level. Check/top up fluid level in automatic transmission. See CHECKING/TOPPING UP FLUID LEVEL IN AUTOMATIC TRANSMISSION (A5S 325Z)  .

Remove and install transmission sump. See REMOVING AND INSTALLING/SEALING OR REPLACING TRANSMISSION OIL SUMP (A5S 325Z)  .

Remove and install/replace transmission fluid screen. See REMOVING AND INSTALLING/REPLACING TRANSMISSION OIL SCREEN (A5S 325Z)  .

Remove retaining clip with screwdriver (2). See Fig 1 . Insert transmission plug (1) in transmission. Upon installation: to facilitate assembly, coat O-ring with Vaseline. See Fig 2 .

Fig 1: Removing Retaining Clip
G00382322Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Locating O-Ring
G00382323Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1). See Fig 3 . Remove pulse generator (2). Pull off connector (3).

Fig 3: Removing Pulse Generator
G00382324Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws. See Fig 4 . Take off valve body. Upon installation, tighten fasteners to specification. See TORQUE SPECIFICATIONS  .

Fig 4: Removing Valve Body
G00382325Courtesy of BMW OF NORTH AMERICA, INC.

Installation: coat O-rings (1) with automatic transmission fluid. See Fig 5 .

CAUTION: Journal (1) of detent disk must be located in groove (2) of slide valve. See Fig 6 .
Fig 5: Locating O-Rings
G00382326Courtesy of BMW OF NORTH AMERICA, INC.
Fig 6: Locating Detent Disk
G00382327Courtesy of BMW OF NORTH AMERICA, INC.