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Overview Brake System

Fig 1: Identifying Brake System Components
GLL103986Courtesy of VOLVO CARS CORPORATION

RSC (Roll Stability Control) 

The Volvo XC90 has an active system which counteracts any tendency to roll over, and gives the vehicle stability during violent avoidance maneuvers.

If there is a risk of the car turning over, RSC is activated. This function is integrated in DSTC (Dynamic Stability and Traction Control). It lowers the engine torque and stabilizes the vehicle by braking one or more wheels.

Foot controlled parking brake 

The parking brake is applied by pressing the pedal on the floor. The handle in the light switch module (LSM) is used to release the parking brake.

Vacuum pump 

B6294T has an electrical vacuum pump to ensure that the pressure is stable in the power brake booster.

General 

For 17 " wheels, the diameter of the brake discs is 316 mm at the front and 308 mm at the rear.

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