Removing front brake discs (carbon ceramic brake)
Precondition
- Vehicles with carbon ceramic brake!
WARNING:
Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly
Danger! Immobilization period-threatening injuries!
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:
Effects on other persons
Injury hazard! Risk of damage!
Injury hazard! Risk of damage!
- Make sure that no other persons are in or around the vehicle
NOTE:
TECHNICAL INFORMATION
If the front brake pads and the rear brake pads are exchanged together, the parking brake button must be operated 1x and released again after completion of the first exchange (e.g. front brake pads)
If not observed, a fault memory entry will take place
If the front brake pads and the rear brake pads are exchanged together, the parking brake button must be operated 1x and released again after completion of the first exchange (e.g. front brake pads)
If not observed, a fault memory entry will take place
NOTE:
TECHNICAL INFORMATION
Before first working on the DSCi brake (integrated brake), the "DSCi" web-based training must be passed successfully
The "DSCi" web-based training is started in the Learning Management System (TMSi)
Before first working on the DSCi brake (integrated brake), the "DSCi" web-based training must be passed successfully
The "DSCi" web-based training is started in the Learning Management System (TMSi)
NOTE:
TECHNICAL INFORMATION
After a brake pad exchange and before pressing the brake pedal: It is imperative to apply the electromechanical parking brake
If this is not observed, a CC message appears and the brake system switches to the emergency program. The brake booster is no longer active
After a brake pad exchange and before pressing the brake pedal: It is imperative to apply the electromechanical parking brake
If this is not observed, a CC message appears and the brake system switches to the emergency program. The brake booster is no longer active
NOTE:
TECHNICAL INFORMATION
General information on changing the brake pads:
For vehicles older than 48 months it is recommended to replace the retaining spring or expanding spring
The brake pad wear sensor must be replaced once it has been removed because the brake pad wear sensor loses its retention capability in the brake pad
A CBS reset must be done after every brake pad exchange:
A CBS reset in the vehicle is possible in the event of a partially ground down brake pad wear sensor. The CBS display in the Central Information Display (CID) is active
In the event of a brake pad wear sensor that is not partially ground down , a CBS reset is only possible with the diagnostic system. No CBS display in the Central Information Display (CID)
If adhesive bonded brake pads are installed, the brake pads must be replaced after releasing the adhesive bond!
General information on changing the brake pads:
For vehicles older than 48 months it is recommended to replace the retaining spring or expanding spring
The brake pad wear sensor must be replaced once it has been removed because the brake pad wear sensor loses its retention capability in the brake pad
A CBS reset must be done after every brake pad exchange:
A CBS reset in the vehicle is possible in the event of a partially ground down brake pad wear sensor. The CBS display in the Central Information Display (CID) is active
In the event of a brake pad wear sensor that is not partially ground down , a CBS reset is only possible with the diagnostic system. No CBS display in the Central Information Display (CID)
If adhesive bonded brake pads are installed, the brake pads must be replaced after releasing the adhesive bond!
NOTE:
In the event of a repair, an individual brake disk (front axle/rear axle) may be exchanged. When replacing a brake disk (especially on the front axle), an exchange of the brake pads by axle is recommended because of the risk of initial skewing when braking during the break-in phase and the associated risk of repeat repairs. From a technical point of view, however, this is not absolutely necessary. Depending on the state of wear and the contact pattern of the brake pads, decisions must be taken on an individual basis according to the situation
Preliminary work
- Refer to PREPARING WORK ON THE CARBON CERAMIC BRAKE .
- Refer to REMOVING THE FRONT LEFT AND RIGHT WHEELS .
- Refer to REMOVING THE BRAKE PAD WEAR SENSOR TO THE FRONT .
- Refer to REMOVING THE FRONT BRAKE PADS .
- Refer to MEASURING THE MINIMUM BRAKE DISC THICKNESS (FRONT BRAKE) .
- Loosen screws (1)
- Remove the brake disc (2)
See next step for procedure
- For damage-free disassembly of the carbon ceramic brake disc, observe the following procedure:
Screw two M8 screws evenly into the internal thread (1) on brake disc chamber, thereby pushing the brake disc from the wheel hub!
Screw in screws evenly to avoid distortion of the brake disc chamber during disassembly