DS 3: Driving / Stop & Start

The Stop & Start function puts the engine temporarily into standby - STOP mode - during phases when the vehicle is stationary (e.g. red lights, traffic jams). The engine automatically restarts - START mode - as soon as the driver indicates the intention of moving off again.

Primarily designed for urban use, the function is intended to reduce fuel consumption and exhaust emissions as well as the noise level when stationary.

The function does not affect the functionalities of the vehicle, in particular the braking.

Deactivation/Reactivation

The function is activated by default when the ignition is switched on.

The settings are changed via the Driving/Vehicle touch screen menu.

A message on the instrument panel confirms the change of status.

When the function is deactivated, if the engine was in standby, it restarts immediately.

Associated indicator lamps

Function activated.

Function deactivated or malfunction.

Opening the bonnet

Before doing anything under the bonnet, deactivate the Stop & Start system to avoid any risk of injury caused by the engine restarting automatically.

Driving on flooded roads

Before entering into a flooded area, it is strongly recommended that you deactivate the Stop & Start system.

For more information on Driving recommendations, particularly on flooded roads, refer to the corresponding section.

Operation

Main conditions for operation

• The driver’s door must be closed.
• The driver's seat belt must be fastened.
• The level of charge in the battery must be sufficient.
• The temperature of the engine must be within its nominal operating range.
• The outside temperature must be between 0°C and 35°C.

Putting the engine into standby (STOP mode)

The engine automatically enters standby mode as soon as the driver indicates their intention to stop:

• With a manual gearbox: with the gear lever in neutral and the clutch pedal released.
• With an automatic gearbox: with the gear selector in mode D or M, the brake pedal depressed until the vehicle stops or the gear selector in mode N, with the vehicle stationary.

Time counter

A time counter adds up the time spent in standby during the journey. It is reset to zero every time the ignition is switched on.

Special cases:

The engine will not go into standby if the conditions for operation are not met and in the following cases:

• Steep slope (ascending or descending).
• Needed to maintain a comfortable temperature in the passenger compartment.
• Demisting active.

In these cases, this indicator lamp flashes for a few seconds, then goes off.

After the engine has restarted, STOP mode is not available until the vehicle has reached a speed of 5 mph (8 km/h).

During parking manoeuvres, STOP mode is not available for a few seconds after coming out of reverse gear or turning the steering wheel.

Restarting the engine (START mode)

The engine automatically restarts as soon as the driver indicates the intention of moving off again.

With a manual gearbox: with the clutch pedal fully depressed.

With an automatic gearbox:

• With the selector in mode D or M: with the brake pedal released.
• With the selector in mode N and the brake pedal released: with the selector at D or M.
• With the selector in mode P and the brake pedal depressed: with the selector at R, N, D or M.
• With reverse gear engaged.

Special cases

The engine will restart automatically if the conditions for operation are met again and in the following cases:

• With a manual gearbox: vehicle speed exceeds 2.5 mph (4 km/h).
• With an automatic gearbox, in mode N, vehicle speed exceeds 0.6 mph (1 km/h).

In these cases, this indicator lamp flashes for a few seconds, then goes off.

Malfunctions

In the event of a fault with the system, this warning lamp flashes for a few moments on the instrument panel, then remains on, accompanied by the display of a message.

Have it checked by a dealer or a qualified workshop.

The vehicle stalls in STOP mode All of the instrument panel warning lamps come on if there is a fault.

• Switch off the ignition then start the engine again with the "START/STOP" button.

12 V battery

The Stop & Start system requires a 12 V battery of specific technology and specification.

All work must be carried out only by a dealer or a qualified workshop.