Lower front subframe

WARNING: High-voltage system .
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

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 .

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: RAISING THE VEHICLE WITH A VEHICLE LIFT .

WARNING: 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.

NOTE: TECHNICAL INFORMATION
Zero voltage (high-voltage system switched-off) is only displayed with in PAD mode.

Preliminary work

Refer to BRINGING THE ENGINE TO THE INSTALLATION POSITION .
Refer to REMOVING THE FRONT LEFT AND RIGHT WHEELS .
Refer to REMOVING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
Refer to REMOVING THE BOTTOM WHEEL ARCH COVER ON THE LEFT AND RIGHT .
Refer to REMOVING THE CRASH LEVER .
Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER ON THE LEFT AND RIGHT .
Refer to PARTIALLY REMOVING THE LEFT AND RIGHT BRAKE VENTILATION DUCT .
Refer to REMOVING THE REAR SECTION OF THE WHEEL ARCH COVER ON THE FRONT LEFT AND RIGHT .
Refer to DETACHING THE WIRING HARNESS OF THE EPS FROM THE FRONT AXLE SUPPORT .
Unlock plug connection (1) and disconnect.
Unclip the line from holder (2).

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Refer to DISCONNECTING THE LEFT AND RIGHT ANTI-ROLL BAR LINK FROM THE ANTI-ROLL BAR .
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 .

NOTE: Perform the steps on the left and right side.

Loosen screws (1) .

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Position the special tool 2 219 012 on the front subframe with the special tools 0 495 819 (31 5 253) and 0 495 821 (31 5 255) .
The center of gravity of the front axle must be centrally above the special tool 2 219 012 !
Support the front subframe with the special tool 2 219 012 .
Secure the front subframe onto the special tool 0 495 817 (31 5 251) with a tensioning strap .

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Loosen screws (1) and (2) .

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When lowering the front subframe, ensure sufficient distance between the steering gear (1) and the output shaft (2) .

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Lower the front subframe (1) with the special tool 2 219 012 by dimension (A) .
Dimensions (A) = maximum 15 cm

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