ADAPTIVE CRUISE CONTROL
Based on information from a radar or camera, the adaptive cruise control function (or Stop and Go adaptive cruise control function on vehicles equipped with an automatic gearbox) enables you to maintain the speed selected (known as cruising speed) while keeping a following distance with the vehicle in front in the same lane.
On vehicles fitted with an automatic gearbox, if the vehicle in front stops, the Stop and Go adaptive cruise control function may apply the vehicle brakes to a full-stop before allowing the vehicle to move-on.
The system controls acceleration and deceleration of your vehicle using the engine and braking system.
The system’s maximum range is approximately 150 m. This may vary according to the road conditions (ground relief, weather conditions, etc.).
According to conditions on the road (traffic, weather etc.), the adaptive cruise control function can be activated:
- 0 mph (0 km/h) to 105 mph (170 km) for vehicles fitted with an automatic gearbox;
- 19 mph (30 km/h) to 105 mph (170 km) for vehicles fitted with a manual gearbox.
The function is indicated by the symbol.
Note:
- the driver must observe the maximum speed limit and safe distances in the country where they are driving;
- the adaptive cruise control can brake the vehicle up to a third of the braking capacity. Depending on the situation, the driver may need to brake harder.
The adaptive cruise control does not trigger an emergency stop and its braking capability is limited.
This function is an additional driving aid.
It can under no circumstances replace the driver’s responsibility to respect speed limits or to be vigilant.
The driver must always be in control of the vehicle. The driver must always adapt their speed according to the surroundings and traffic conditions. The adaptive cruise control must only be used on a motorway (or multi-lane road separated by a barrier). The cruise control must not be used in heavy traffic, on winding or slippery roads (black ice, aquaplaning, gravel) or during bad weather (fog, rain, side winds etc.). There is a risk of accidents.
Location of the camera 1
Make sure the windscreen is not obscured (by dirt, mud, snow, condensation etc.).
Location of the radar 2
Ensure that the radar area is not obstructed (dirt, mud, snow, a badly fitted/attached front number plate), impacted, modified (including paintwork) or hidden by any accessory fitted on the front of the vehicle (on the grille or logo etc.).
Controls
3 Safe distance settings
4 Switch the function to standby (with cruising speed saved) (0).
5 Adaptive cruise control main stop/start switch .
6 Cruising speed activation, storage and decrease switch (SET/-).
7 Switch to activate and increase cruising speed or to recall the memorised cruising speed (RES/+).
The radar and camera zones must be kept clean and free of any tampering in order to ensure the proper operation of the system.
Displays
8 Adaptive cruise control warning light.
9 Vehicle in front.
10 Stored safe distance
11 Stored cruising speed.
Important: you should keep your feet near the pedals at all times to prepare for any event.
Switching on
Press switch 5.
Warning light appears in grey, and the message “Adaptive Cruise Ctl ON” appears on the instrument panel, accompanied by dashes to indicate that the cruise control function is activated and waiting to store a cruising speed.
This function cannot be activated when:
- the parking brake is applied;
- the Park Assist function is already activated ASSISTED PARKING.
The message “Adaptive Cruise Ctl unavailable” is displayed on the instrument panel.
Activating cruise control
When the vehicle is stationary (vehicles equipped with an automatic gearbox) or when the vehicle is moving at a steady speed (all vehicles), press the 6 (SET/-) or 7 (RES/+) switch to activate the function and store the current speed. The minimum cruising speed is 19 mph (30 km/h).
The cruising speed 11 replaces the dashes and cruise control is confirmed by the appearance of the cruising speed in green and warning light .
If you try to activate the function when the vehicle speed is over 105 mph (170 km/h) or below 19 mph (30 km/h) on vehicles fitted with a manual gearbox, the message “Invalid Speed” is displayed and the function will remain inactive.
Once a cruising speed is memorised and the cruise control function is active, you may lift your foot off the accelerator pedal.
Special feature on vehicles with an automatic gearbox: if the vehicle speed is below approximately 19 mph (30 km/h), the cruising speed will automatically be set to 19 mph (30 km/h). The vehicle will accelerate until it reaches the stored cruising speed.
Safe distance control activation
As soon as cruise control is activated, the default safe distance 10 is displayed in green on the instrument panel. The default safe distance corresponds to approximately two seconds (see following pages).
If the system detects a vehicle in your lane, an outline of a vehicle 9 appears above the distance gauge 10 on the instrument panel.
Your vehicle adapts its speed to that of the vehicle in front and applies the brakes if necessary (the brake lights come on) in order to maintain the distance displayed on the instrument panel.
Note: the size of the 9 outline varies according to the distance separating you from the vehicle in front. The larger the outline, the closer the vehicle in front.
Setting the cruising speed
You can vary the speed by repeatedly pressing (for a small variation) or pressing and holding (for a larger variation) switch 6 or 7:
- use the “SET/-” switch 6 to reduce the speed;
- use the “RES/+” switch 7 to increase the speed.
Adjusting the following distance
You can vary the safe distance from the vehicle in front at any time by pressing switch 3 repeatedly.
The horizontal distance gauge on the instrument panel indicates the various available safe distances:
- distance gauge A: long distance (corresponding to approximately 2.4 seconds);
Adjusting the following distance
(continued)
- distance gauge B: intermediate distance 2 (corresponding to approximately 2 seconds);
- distance gauge C: intermediate distance 1 (corresponding to approximately 1.6 seconds);
- distance gauge D: short distance (corresponding to approximately 1.2 seconds).
The selected distance gauge appears in green on the instrument panel. The other gauges remain in grey.
Note: the distance must be set according to the traffic level, local regulation and weather conditions.
The safe distance is adjusted by default on the distance gauge B.
Exceeding the cruising speed
The cruising speed may be exceeded at any time by applying the accelerator pedal.
If it is exceeded, the cruising speed 11 appears in red.
The distance gauge flashes if the distance between your vehicle and the vehicle in front is less than the safe distance selected: the Safe Distance Control function is no longer active.
Then, release the accelerator pedal: the cruise control and safe distance control will automatically resume the speed and distance instructions that you had previously selected.
Overtaking manoeuvre
If you wish to overtake the vehicle in front, activating the indicator will temporarily cancel the safe distance control and enable an acceleration speed sufficient to complete overtaking.
Stopping and starting on vehicles fitted with an automatic gearbox
If the vehicle in front slows down, the system adapts its speed, if necessary to a complete stop (e.g. in heavy traffic). The vehicle stops a few metres from the vehicle in front. The Stop and Start function can put the engine on standby STOP AND START FUNCTION.
When the vehicle in front sets off again:
- if the stop does not exceed about three seconds, the vehicle sets off automatically without any action by the driver;
- if the stop exceeds about three seconds, you must apply the accelerator pedal or press button 7 (RES/+) in order for the vehicle to set off again. The message “Press RES/+ or accelerate” appears on the instrument panel to confirm.
If the stop exceeds about three minutes, the electronic parking brake is automatically applied and the Stop and Go adaptive cruise control is deactivated. The warning light disappears to confirm that the function is deactivated.
Putting the function on standby
You can set the function to standby when:
- you press switch 4 (0);
- you apply the brake pedal while the vehicle is moving.
The function is deactivated by the system if:
- you set the automatic gearbox to P or N;
- you engage the reverse gear;
- you unbuckle the driver’s seatbelt;
- you open one of the opening elements;
- you press the engine start/stop button;
- the slope is too steep;
- the vehicle speed is above 112 mph (180 km/h);
- certain driving aids and correction devices are triggered (active emergency braking, ABS, ESC);
- when you press the clutch pedal for a prolonged period or upon prolonged neutral position on vehicles equipped with a manual gearbox.
In all circumstances, the standby is confirmed when the warning lights appear in grey and the message “Adaptive Cruise Ctl Disconnected” appears on the instrument panel.
Putting the adaptive cruise control in standby or switching it off does not cause a rapid reduction in speed: you must brake by applying the brake pedal if necessary.
Exit from standby
Based on the stored cruising speed
If a speed is stored, it can be recalled, once you are sure that the road conditions are suitable (traffic, road surface, weather conditions, etc.). Press switch 7 (RES/+) in the range of confirmed speeds.
When the stored speed is recalled, activation of the cruise control is confirmed by the illumination of the cruising speed in green.
Note: if the stored speed is higher than the current speed, the vehicle will accelerate to reach that speed.
Based on the current speed
When the cruise control is set to standby, pressing switch 6 (SET/-) reactivates the cruise control function without taking into account the stored speed: it is the speed at which the vehicle is moving that is taken into account.
“Take control of the vehicle” warnings
In some situations (e.g. coming upon a much slower vehicle, vehicle in front changing lanes quickly etc.), the system may not have time to react.
Depending on the situation, the system sounds a beep associated with:
- the orange alert E if the situation requires the driver’s attention;
or
- the red alert F accompanied by the message “Brake”, if the situation requires the driver’s immediate attention.
In all situations, react accordingly and perform the appropriate manoeuvres.
Switching off the function
The adaptive cruise control function is deactivated when you press the 5 switch.
The warning light disappears from the instrument panel to confirm that the function is no longer active.
Temporary unavailability
The radar is able to detect vehicles in front of your vehicle. The system cannot operate correctly if the radar detection area is obscured or if its signal is disrupted.
If the radar detection area is obstructed or the radar signal is disrupted, the message “Front radar no visibility” is displayed on the instrument panel and the adaptive cruise control is interrupted. The green warning light disappears to confirm that the function has been automatically deactivated.
Ensure that the radar area is not obstructed (dirt, mud, snow, a badly fitted/attached front number plate), impacted, modified (including paintwork) or hidden by any accessory fitted on the front of the vehicle (on the grille or logo etc.).
Conditions in certain geographical areas may hinder the function, for example:
- arid zones, tunnels, long bridges or lightly used roads without road lines, without signs or trees nearby;
- a military or airport zone.
You must leave such areas in order for the function to work.
In all cases, if the message is not erased after the engine is restarted, please contact an authorised dealer.
Operating faults
If an adaptive cruise control function operating fault is detected, the message “Check Adaptive Cruise control” appears on the instrument panel and the adaptive cruise control function is deactivated.
If an operating fault is detected on one or more components of the system, the adaptive cruise control function is interrupted.
The © warning light appears on the instrument panel along with, depending on the malfunction, one of the following messages:
- “Front camera to check”;
- “Front radar to check”;
- “Camera/Radar to check”;
- “Check vehicle”.
Consult an approved dealer.
Limitations of system operation
Vehicle detection
The system detects only vehicles (cars, trucks, motorbikes) that are moving in the same direction as your vehicle.
A vehicle turning into the same lane (e.g. G) will be taken into account by the system only once it enters the camera and radar detection areas.
The system may trigger abrupt or delayed braking.
The system cannot detect:
- vehicles arriving at intersections: slip road (e.g. H) etc;
- vehicles driving on the wrong side of the road or reversing towards you.
The adaptive cruise control must only be used on a motorway (or multi-lane road separated by a barrier).
Detection during cornering
When entering a corner or bend, the radar and/or camera may temporarily not be able to detect the vehicle in front (e.g. J).
The system may trigger an acceleration.
When exiting a bend, the system’s detection of the vehicle in front may be disrupted or delayed.
The system may trigger abrupt or delayed braking.
Detection of vehicles in adjacent lanes
The system may detect vehicles driving on an adjacent lane when:
- you drive into a bend (e.g. K);
- you are driving on a road with narrow lanes;
- the speed of the vehicle on the adjacent lane is slower and if one of these vehicles is located too close to the lane of the other.
The system may incorrectly trigger vehicle slowing or braking.
Vehicles hidden due to variations in ground relief
The system will not detect vehicles hidden due to variations in ground relief or those located outside of the camera and radar detection areas when driving uphill or downhill.
Vehicles outside the camera and radar detection areas.
The system will react late or not at all if the detected vehicles are outside the camera and radar detection areas, particularly in the following cases:
- vehicles transporting long objects which exceed the line;
- the actual length of tall vehicles (e.g. L) outside the radar detection area (construction machine, agricultural equipment towing vehicle, etc.) ;
- vehicles insufficiently centred in the lane;
- narrow vehicles which are very close (e.g. M).
Stationary and slow moving vehicles
When your speed is over approximately 31 mph (50 km/h), the system does not detect:
- stationary vehicles (e.g N);
- very slow moving vehicles.
When your speed is less than approximately 31 mph (50 km/h), the system may not react or may react very late to:
- stationary vehicles (e.g N);
- very slow moving vehicles;
- vehicles in front12 which change lane, revealing a stationary vehicle 13 (e.g. P).
Always be ready to take control of your vehicle when you come upon stationary or very slow moving vehicles (e.g. N).
The adaptive cruise control does not trigger an emergency stop and its braking capability is limited.
Non-detection of fixed obstacles and objects of a small size
The system cannot detect:
- pedestrians, bikes, scooters, etc. ;
- animals;
- fixed obstacles (toll barriers, walls, etc.) (e.g. Q).
These are not taken into account by the system. They do not trigger any alert or reaction by the system.
Detection of vehicles moving into lane at high speed
When your vehicle is overtaken by another vehicle driving at high speed 14 (motorcycle, car, etc.) (e.g. R) and that vehicle temporarily moves in between you and the vehicle in front 15, the system may trigger undue acceleration, slow down or braking.
This function is an additional driving aid. It can under no circumstances replace the driver’s responsibility to respect speed limits and safe distances and to be vigilant.
The driver must always be in control of the vehicle.
The driver must always adapt their speed to the surroundings and driving conditions, regardless of system indications.
Except for lines delimiting lanes, traffic indicators (traffic lights, signs, pedestrian crossings etc.) are not recognised by the system. These do not trigger any alert or reaction by the system.
The system should under no circumstances be taken to be an obstacle detector or an anti-collision system.
The adaptive cruise control must only be used on a motorway (or multi-lane road separated by a barrier).
System servicing/repairs
- In the event of an impact, the radar and/or camera alignment may be changed and its operation may consequently be affected. Deactivate the system and consult an authorised dealer.
- Any work in the proximity of the radar and/or camera (replacements, repairs, windscreen modifications, paintwork etc.) must be carried out by a qualified professional.
Only an authorised dealer is qualified to service the system.
Deactivating the function
You must disable the function if:
- the vehicle is travelling on a windy road;
- the vehicle is being towed (breakdowns);
- the vehicle is towing a trailer or a caravan;
- the vehicle is being driven in a tunnel or close to a metallic structure;
- the vehicle arrives at a toll point, a roadwork area or on a narrow lane;
- the vehicle is being driven up or down a very steep slope;
- the visibility is poor (glaring sun, fog etc.);
- the vehicle is being driven on a slippery road surface (rain, snow, gravel, etc.);
- the weather conditions are poor (rain, snow, side winds, etc.);
- the radar area has been damaged (impacts etc.) ;
- the camera area has been damaged (e.g. on the inside or outside of the windscreen);
- the windscreen is cracked or distorted.
In the event of the system behaving abnormally, deactivate it and consult an authorised dealer.
In the event of system disturbance
Some conditions can disturb or damage the operation of the system, such as:
- the windscreen or radar area is obscured (by dirt, ice, snow, condensation, number plate etc.);
- a complex environment (tunnel etc.);
- poor weather conditions (snow, heavy rain, hail, black ice, etc.);
- poor visibility (night, fog etc.);
- poor contrast between the vehicle preceding it and the surrounding area (e.g. white vehicle in a snowy area etc.) ;
- being dazzled (glaring sun, lights of vehicles travelling in the opposite direction etc.);
- narrow, winding or undulating road (tight bends etc.) ;
- a slower vehicle with a significant difference in speed;
- use of mats not adapted to the vehicle. On the driver’s side, only use mats suitable for the vehicle, attached with the pre-fitted components, and check the fitting regularly. Do not lay one mat on top of another. There is a risk of wedging the pedals.
In these cases, the system may wrongly intervene.
Risk of unwanted braking or acceleration.
Many unforeseen situations may affect the system operation. Certain objects or vehicles that can appear in the camera or radar detection zone may be interpreted by the system incorrectly, possibly leading to inappropriate acceleration or braking.
You should always be attentive to sudden events that might occur while you are driving. Always keep your vehicle under control by keeping your feet near the pedals, so that you are ready to act in any event.