Braking from the system may be heard as a pulsing sound, and the car may accelerate more slowly than expected when applying the throttle.
The system consists of the following subfunctions:
- Stability function(Also known as Active Yaw Control.)
- Spin control and traction control system
- Engine Drag Control
- Trailer stability assist
Warning
- The function is supplementary driver support intended to facilitate driving and make it safer – it cannot handle all situations in all traffic, weather and road conditions.
- The driver is advised to read all sections in the Owner’s Manual that relate to this function to learn about factors such as its limitations and what the driver should be aware of before using the system.
- Driver support functions are not a substitute for the driver’s attention and judgment. The driver is always responsible for ensuring the car is driven in a safe manner, at the appropriate speed, with an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.
Stability function(Also known as Active Yaw Control.)
The function checks the driving and brake force of the wheels individually in order to stabilize the car.
Spin control and traction control system
- Spin control is activated at all speeds, and prevents the wheels from slipping against the road surface during acceleration.
- Traction control is active at low speeds, and can brake a slipping wheel to increase traction on the wheel on the opposite side.
Engine Drag Control
Engine Drag Control (EDC Engine Drag Control) can prevent involuntary wheel lock-up, e.g. when the engine braking on slippery road surfaces. Involuntary wheel locking while driving can, amongst other things, impair the driver’s ability to steer the car.
Trailer stability assist(Option/accessory Trailer stability assist is included when the Volvo genuine towbar is installed.)
Trailer stability assist (TSA Trailer Stability Assist) stabilizes a car towing a trailer in situations where they begin snaking.
Symbols and messages for electronic stability control
A number of symbols and messages regarding electronic stability control (ESC) can be shown on the driver display. Here are some examples.
| Symbol | Message | Specification |
|---|---|---|
| | Constant glow for approx. 2 seconds | System check when the engine is started. |
| | Flashing light | The system is being activated. |
| – | Traction control temporarily off | The traction control system has been temporarily reduced due to excessive brake temperature. The function is reactivated automatically when the brakes have cooled. |
| | ESC Service required | The system is disengaged. Stop the car at a safe place. Check whether the error was temporary or if it persists by switching off the engine and starting it again. If the problem persists, contact a workshop – an authorised Volvo workshop is recommended. The car can be driven but without ESC functionality. |
- A text message can be cleared by briefly pressing the
- If a message remains, contact a workshop – an authorised Volvo workshop is recommended.