2022 Volvo S90 Recharge Plug-in Hybrid Electronic stability control
Electronic stability control
Electronic Stability Control (ESC) helps the driver to avoid skidding and improves the car’s traction.
The driver display shows this symbol when the system is engaged.
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
- Spin control and traction control system
- Engine Drag Control
- Trailer stability assist
- 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, at an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.
Stability function
The function checks the driving and brake force of the wheels individually in order to stabilize the car.
Spin control and traction control system
The function is active at low speed and brakes the drive wheels that spin so that additional traction shall be transferred to the drive wheels that are not spinning.
The function can also prevent the driving wheels from spinning against the road surface during acceleration.
Engine Drag Control
Engine Drag Control (EDC) 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
Trailer stability assist (TSA) 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 authorized Volvo workshop is recommended. |
A text message can be cleared by briefly pressing the 
button, located in the centre of the steering wheel’s right-hand keypad.
If a message remains, contact a workshop – an authorized Volvo workshop is recommended.