Lower front subframe

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.

WARNING: Heavy component falling down or tipping .
Danger! Immobilization period-threatening injuries!

Before lowering or removing the front axle: Secure the engine in the installation position.
For additional information see: 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (M4 RWD MODELS, 2021-2023) or 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (M4 AWD MODELS, 2021-2023) .

WARNING: Car may slip off the vehicle hoist where components are supported .
Danger! Immobilization period-threatening injuries!

Secure the vehicle hoist against lowering and lifting.
Make sure that the vehicle does not lift off the mounting plates on the vehicle lift.

WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly .
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: 00... RAISE THE VEHICLE USING A VEHICLE LIFT .

CAUTION: Car may slip off the vehicle hoist if the weight is distributed unevenly .
Danger! Immobilization period-threatening injuries!

Ensure there is a specific weight compensation on the car.

NOTE: RISK OF DAMAGE
Damage to steering column switch cluster (SZL) .
The steering column switch cluster (SZL) or the coil spring cassette can be damaged by twisting the steering wheel if the lower steering shaft (or the universal joint) is separated from the steering gear or the steering column .

After separating the lower steering shaft (or the universal joint) from the steering gear or from the steering column, secure the steering wheel against twisting.

Preliminary work

Refer to BRINGING THE ENGINE TO THE INSTALLATION POSITION .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE LEFT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
Refer to RELEASING THE TRANSMISSION OIL LINES ON THE FRONT SUBFRAME .
Refer to REMOVING THE FRONT SPOILER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE BOTTOM FRONT LEFT AND RIGHT COVER .
Refer to REMOVING THE LEFT AND RIGHT FRONT UNDERSHIELD .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER ON THE LEFT AND RIGHT .
Refer to REMOVING THE LEFT FRONT AND RIGHT FRONT BRAKE VENTILATION DUCT .
Refer to RELEASING THE STEERING SHAFT AT THE BOTTOM ON THE DOUBLE PIVOT .
Refer to DETACHING THE WIRING HARNESS OF THE EPS FROM THE FRONT SUBFRAME .
Refer to DETACHING THE LINE CONNECTION OF THE RIDE HEIGHT SENSOR .
Refer to LOOSENING THE ANTI-ROLL BAR LINK ON THE LEFT AND RIGHT FROM THE ANTI-ROLL BAR .
Refer to RELEASING THE COOLANT LINES FROM THE FRONT SUBFRAME .
Refer to RELEASING THE REINFORCEMENT STRUT FROM THE FRONT SUBFRAME .
Refer to PREPARING THE SPECIAL TOOL .

WARNING: Heavy component falling down or tipping .
Danger! Immobilization period-threatening injuries!

Before lowering or removing the front axle: Secure the engine in the installation position.
For additional information see: 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (M4 RWD MODELS, 2021-2023) or 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (M4 AWD MODELS, 2021-2023) .

Feed out the feed line (1) from the holder (2) in the arrow direction and place to one side.