Volvo V40 Start / Stop Not Working
When the Volvo V40 engine is started, the auto start / stop system is activated automatically. Systems such as lighting and radio continue to work when engine stop has been invoked by the system. To reduce drain on the V40’s starter battery charge, other equipment such as the climate control fan or high audio volume are temporarily reduced.
In order for the Volvo V40’s automatic engine start / stop system to work, certain conditions must be met. If these conditions are not met, the engine may not automatically stop, or if conditions have changed, the engine may unexpectedly start.
If your Volvo V40 start / stop is not working, first check that the appropriate conditions are suitable. These are:
- M: Manual
- A: Automatic
- B: Cars with electronic climate control
- C: Certain engines only
- D: Sport mode
Engine Does Not Auto-Stop
The engine start / stop is activated, but the engine fails to stop.
| Conditions | |
|---|---|
| M + A | A speed of approximately 6 mph (10 km/h) has not been achieved after a engine key start or since the previous auto-stop. |
| M + A | The driver's seat belt buckle has been released. |
| M + A | Starter battery charge capacity is below the minimum permissible level. |
| M + A | The engine has not reached normal operating temperature. |
| M + A | The ambient temperature is around freezing point or below, or above approx. 31 °C. The Volvo V40 auto start / stop system operates within a range of approximately 4.5 and 30.5 degrees Celsius. |
| M + A | The windscreen's electric heating has been activated. |
| M + A + B | The environment in the passenger compartment differs from the preset values (B) - indicated by the ventilation fan running at a high speed. |
| M + A | The car is reversing. |
| M + A | The temperature of the starter battery is below freezing or too high. |
| M + A | Significant movements on the steering wheel are detected. |
| M + A | The diesel particulate filter (DPF) is full. Cleaning process is being performed. Start / stop is temporarily disengaged until the cleaning process is complete. |
| M + A | The road is very steep. |
| M + A | A trailer is connected electrically to the car’s electrical system. |
| M + A + C | The bonnet / hood has been opened. |
| A | The gearbox is not at a normal operating temperature. |
| A | Atmospheric air pressure is less than equivalent to 1500 to 2500 metres above sea level - the current air pressure varies with the prevailing weather conditions. |
| A | The adaptive cruise control Queue Assist has been activated. |
| A + D | The gear selector is moved out of the D position to R, S position or +/-. |
Engine Auto-Starts
The engine has been auto-stopped but restarts without the driver having decided to continue the journey.
| Conditions | |
|---|---|
| M + A | A speed of approximately 6 mph (10 km/h) has not been achieved after a engine key start or since the previous auto-stop. |
| M + A | The driver's seat belt buckle has been released. |
| M + A | Starter battery charge capacity is below the minimum permissible level. |
| M + A | The engine has not reached normal operating temperature. |
| M + A | The ambient temperature is around freezing point or below, or above approx. 31 °C. The Volvo V40 auto start / stop system operates within a range of approximately 4.5 and 30.5 degrees Celsius. |
| M + A | The windscreen's electric heating has been activated. |
| M + A + B | The environment in the passenger compartment differs from the preset values (B) - indicated by the ventilation fan running at a high speed. |
| M + A | The car is reversing. |
| M + A | The temperature of the starter battery is below freezing or too high. |
| M + A | Significant movements on the steering wheel are detected. |
| M + A | The diesel particulate filter (DPF) is full. Cleaning process is being performed. Start / stop is temporarily disengaged until the cleaning process is complete. |
| M + A | The road is very steep. |
| M + A | A trailer is connected electrically to the car’s electrical system. |
| M + A + C | The bonnet / hood has been opened. |
| A | The gearbox is not at a normal operating temperature. |
| A | Atmospheric air pressure is less than equivalent to 1500 to 2500 metres above sea level - the current air pressure varies with the prevailing weather conditions. |
| A | The adaptive cruise control Queue Assist has been activated. |
| A + D | The gear selector is moved out of the D position to R, S position or +/-. |
Particular reasons for the automatic engine start / stop system not working may be found by navigating to: My Car > Drive-E > Start/Stop settings.
Further Information
For further information about the Volvo V40, see Volvo V40 dashboard warning lights.