Root Causes for Dynamic Stability Control Malfunction in Bentley Vehicles

Bentley cars are famous for their high degree of refinement, luxury engineering and comfortable ride. This vehicle includes certain features such as Dynamic Stability Control. DSC keeps your Bentley well-balanced, especially in case of complex maneuvers, bad weather conditions, rough roads or in case of emergency braking.

It works silently and ensures trouble-free performance each time the computer detects any problems with traction or stability. In case everything works properly then the driver cannot even notice the presence of this system. In case of a malfunction the light will appear.

What is Dynamic Stability Control?

Dynamic Stability Control assists in maintaining the stability of your Bentley based on data gathered from wheel speed, steering wheel position, brake and throttle pedal application, yaw movement and lateral acceleration sensors. This works by comparing the driver's intention with the vehicle before changing gear.

What Causes a Bentley DSC System to Fail?

Faulty Wheel Speed Sensors

The DSC system will determine if there is a loss of traction due to one wheel rotating faster or slower than the others. If the wheel speed sensor fails or malfunctions then the system will no longer be able to effectively compute the stability of the vehicle.

The activation of the ABS and traction control warning lights is another sign that the wheel speed sensor is damaged. Other causes of malfunction include dirt, brake dust, road debris, moisture or damaged wire around the wheel hub.

Possible Malfunctions of the Steering Angle Sensor

Problems might arise due to malfunctions of the steering angle sensor, wheel alignments, suspension repair, replacement of batteries and steering components. Calibration is required in most cases and requires specialized equipment.

Battery voltages or the charging system

A stable voltage supply is essential for the efficient functioning of the DSC system. Low voltage may lead to the loss of control. It is common in luxury vehicles where various electronic systems are operating simultaneously. Unexpected appearance and disappearance of the warning light after resetting might mean that there are problems with the voltage.

Failure of the ABS Control Module

The issue related to the ABS control module could also lead to the shutdown of the DSC system. The symptoms include ABS warning lights, traction control warning lights, brake warning signals and the DSC warning.

Diagnosis of module-related ABS issues must be performed by experts as the issue may be due to electronic problems, software issues or wiring or communications problems with other control modules.

Brake Pressure Sensors

Issues regarding wrong data entered into the system by the brake pressure sensors could confuse the system and lead to a fault warning. It may also affect the efficiency of the stability control and brake assistance system.

Faults with the brake pressure sensors could be detected through diagnostic scanning. A mechanic may actually try checking whether the actual brake pressure matches the pedal input while the vehicle is being lifted up.

Yaw Rate or Lateral Acceleration Sensor Failure

A yaw rate sensor measures angular rate in yaw while a lateral acceleration sensor measures lateral acceleration. The DSC system employs these sensors to detect the car's state of stability by detecting whether the car is losing control, slipping or sliding.

If either of these two sensors fails then the car cannot detect whether it is stable or unstable and disables the DSC system and displays an error message.

Damaged Wiring or Poor Electrical Connection

Modern Bentleys have many complicated wiring and control units. The communication process between DSC sensors and the main control module can be disrupted if there is damage to the wiring, a loose electrical connector, a corroded terminal or moisture intrusion.

Wire installation is a rather delicate process and sometimes a problem can be fixed and disappear instantly. This warning light often shows up while driving over rough roads, washing the vehicle and in rainy conditions.

Conclusion

If you receive any warning due to a DSC malfunction in your Bentley vehicle then it is recommended that you visit our service center for excellent service. Our highly skilled technicians understand how your Bentley works and our diagnosis, electrical testing, sensors calibration, ABS and other aspects of the repair process are done with precision by our highly skilled mechanics. You can trust that your Bentley will be handled only by qualified personnel. Contact us today and have your Bentley DSC inspected and drive around worry-free.

Mark Douglas Motorworks is a family owned and operated auto repair shop, giving service to all European and exotic cars like Aston Martin, Audi, Bentley, BMW, Mercedes, Maserati, Ferrari, Jaguar, Land rover, Porsche and Rolls Royce.