These functions are used for service work on the vehicle's parking brake. The electromechanical parking brake uses separate brake shoes integrated into the car's rear brake discs.
The following works requires that you reset the parking brake:
Removing and installing parking motors, brake discs, brake shoes for the parking brake and wheel hubs.
Note:
When replacing the rear brake pads, no reset of the parking brake is required.
Test conditions:
Access to a stretch of road of approximately 200 meters, to perform the basic setting.
Follow the instructions shown in the function.
Performance:
Run the parking brake to the mounting position (before the service work):
Ignition on, engine off.
Select the function: "Drive the parking brake to the mounting position".
The parking brake motors are now running back the brake shoes to the mounting position.
The warning lamp for the parking brake turns on and fault code B201000 is stored, it can only be erase after a successfull basic adjustment.
The function is done.
Note! For the safety, pull off the plug connection to the parking brake motors, to prevent accidental activation of the motors before the work on the rear wheel brakes begins.
Air gap adjustment (after the service work):
Ignition on, engine off.
The parking brake must not be activated.
Select the function: "Air gap adjustment".
The parking brake motors are activated repeatedly, then performs a measuring on the brake shoes air gap.
Current air gap measurement is presented, also setpoint value and the maximum difference between L/R side is presented.
Is the air gap measurement outside the tolerance value, this must be adjusted using the toothed washer in the parking brake mechanism.
After adjusting the air gap measurement a new activation of the parking brake motors is performed, then the measurement is performed again.
At OK air gap measurement must the engine be started and then performs a final measuring of the air gap.
The function is done.
Now perform the function: "Basic setting of parking brake".
Basic setting of parking brake:
Ignition on and engine off.
Select the function: "Code control unit".
Read the current variant code and select save to file, this is done as a precaution before the basic setting. Then cancel the function.
Select the function: "Basic setting of parking brake".
The control unit variant code is erased - this is a prerequisite to perform a basic setting.
Follow the instructions presented regarding ignition off/ignition on.
The control unit variant code is being entered again.
Follow the instructions presented regarding brake/parking brake manoeuvering.
A check of the brake shoes air gap is performed. If the air gap is not within the tolerances, exit the basic setting and select the function: "Air gap adjustment".
Follow the instructions presented regarding ignition off/ignition on.
Start the engine and let it idle. Access to a stretch of road of at least 100 meters.
When instructed, accelerate the car quickly to approximately 10-15 km/h.
The parking brake is applied automatically during the driving for in order to be grinded in. Each process involves braking during a maximum of 20 seconds.
Then stop the car and cool down the brakes for 10 seconds.
This process is repeated until the total driving distance of 222 meters is reached.
When correct driving distance is reached - let the car idle for 30 seconds to cool the brakes.
Then performs an automatically initiation of the parking brake.