Tightening torques and fluids

For tightening torques, also refer to the various 'exploded views' in the procedures.

FRONT BRAKES

Caliper guide pin bolt (*): 3.5.

Caliper bracket bolt (*): 11.5.

Brake hose to caliper: 1.8.

ABS wheel speed sensor: 0.6.

Bleed screw: 0.7.

Disc bolt: 1.

Wheel bolt: 13.

(*) Screws or nuts to be replaced after each removal.

REAR BRAKES

Caliper guide pin bolt (*): 3.5.

Caliper bracket bolt (*): 5.5.

Brake hose to caliper: 1.8.

ABS wheel speed sensor: 0.6.

Bleed screw: 0.7.

Disc bolt: 1.

Wheel bolt: 13.

(*) Screws or nuts to be replaced after each removal.

CONTROLS

Master cylinder to brake booster (*): 1.5.

Brake lines to master cylinder: 1.8.

Brake booster to pedal box (*): 2.

Vacuum pump: 1.2.

Control unit to hydraulic unit: 0.3.

Brake lines to hydraulic block: 1.6.

(*) Screws or nuts to be replaced after each removal.

Wiring diagrams

KEY

See explanations and how to read a diagram in the 'Electrical equipment' chapter.

ABBREVIATIONS

BAS. Brake Assist
ESP. Electronic Stability Program

COMPONENTS

B24/15. Yaw rate sensor, micromechanical, transmitter AY
E1. Front left headlamp unit
E1n1. Xenon headlamp control unit
E21. Third brake light
E3. Rear left light
E4. Rear right light
F55/1. Fuse box 1, 9-way
F55/1f1. Fuse 1
F55/1f9. Fuse 9
F55/2. Fuse box 2, 9-way
F55/2f15. Fuse 15
F55/3. Fuse box 3, 9-way
F55/3f19. Fuse 19
F55/3f25. Fuse 25
L6/1. Front left wheel speed sensor
L6/2. Front right wheel speed sensor
L6/3. Rear left wheel speed sensor
L6/4. Rear right wheel speed sensor
N47-5. ESP and BAS control unit
S10/2. Front right brake pad wear sensor
S11. Brake fluid level warning switch
S12. Parking brake warning switch
S9/1. Brake light switch
U12. Valid for left-hand drive
U13. Valid for right-hand drive
U735. Valid for bi-xenon
U839. Valid for brake light switch without load
U840. Valid for brake light switch with load-dependent function
W1/1. Cockpit chassis ground
W3/1. Front right wheel arch ground (ignition coil)
W3/2. Front left wheel arch ground
X62/1. Rear left wheel speed sensor / brake pad wear indicator connector
X62/2. Rear right wheel speed sensor / brake pad wear indicator connector
X62/6. Front left distributor connector in engine compartment
X62/7. Front left distributor connector in engine compartment
X63/4. CAN data bus connector, 2-pin
Z10. Terminal 54 end sleeve (soldered connection in the wiring harness)

COLOUR CODES

BK: Black
BN: Brown
BU: Blue
GN: Green
GY: Grey
PK: Pink
RD: Red
TR: Transparent
VT: Violet
WH: White
YE: Yellow

Brake assist management (1/2)

Brake assist management (2/2)