Citroen C4: Blind spot monitoring

For more information, refer to the General recommendations on the use of driving and manoeuvring aids.

This system warns the driver of a potential danger posed by the presence of another vehicle (car, lorry, motorcycle) in the vehicle's blind spots (areas hidden from the driver's field of vision) using sensors located on the sides of the bumpers.

A warning lamp appears in the door mirror on the side in question:

- fixed, immediately, when being overtaken.

- flashing, after a delay of about one second, when overtaking a vehicle slowly, and when the direction indicator is used.

Activation/Deactivation

With Touch screen BLUETOOTH audio system or MyCitroën Play

The settings are changed via the Driving touch screen menu.

With MyCitroën Drive Plus

The settings are changed via the ADAS touch screen application.

When starting the vehicle, the warning lamp comes on in each mirror to indicate that the system is activated.

The status of the system is memorised when the ignition is switched off.

The system is automatically deactivated when towing with a towing device approved by CITROËN.

Operating conditions

- All vehicles are moving in the same direction and in adjacent lanes.

- The speed of your vehicle must be between 7 and 87 mph (12 and 140 km/h).

- When overtaking a vehicle, the speed difference is less than 6 mph (10 km/h).

- When overtaken by a vehicle, the speed difference is less than 16 mph (25 km/h).

- Traffic is flowing normally.

- Overtaking a vehicle over a certain period of time and the vehicle being overtaken remains in the blind spot.

- You are driving on a straight or slightly curved road.

- Your vehicle is not pulling a trailer, a caravan, etc.

Operating limits

No alert is triggered in the following conditions:

- presence of stationary objects (e.g. parked vehicles, safety rails, lampposts, signs).

- vehicles travelling in the opposite direction.

- on winding roads or in case of sharp turns.

- when overtaking or being overtaken by a very long vehicle (e.g. truck, bus), which is both detected in a blind spot from behind and present in the driver's field of vision from the front.

- quick overtaking manoeuvre.

- very heavy traffic: vehicles detected in front and behind are confused with a lorry or a stationary object.

Malfunction

If the event of a malfunction, this warning lamp lights up on the instrument panel, accompanied by the display of a message.

Have it checked by a CITROËN dealer or a qualified workshop.

The system may be temporarily disturbed by certain weather conditions (e.g. rain, hail).

In particular, driving on a wet road or going from a dry to a wet area can cause false alerts (e.g. presence of a cloud of water droplets in the blind spot interpreted as a vehicle).

In bad or wintry weather, ensure that the sensors are not covered by mud, ice or snow.

Take care not to cover the warning zone in the door mirrors, or the detection zones on the front and rear bumpers with adhesive labels or other objects; they may hamper correct operation of the system.