Citroen C4: Head-up display

System which projects various information onto a transparent blade placed in the driver's field of vision to avoid the driver having to take their eyes off the road.

Display in operation

Once the system has been activated, the following information is grouped together in the head-up display:

1. The speed of the vehicle.
2. Cruise control/speed limiter information, indication of danger zones (with connected navigation) and, where fitted, information from the Road signs recognition function.
3. If the vehicle is so equipped, inter-vehicle distance information, lane positioning assist information and automatic emergency braking alerts.
4. If the vehicle is so equipped, navigation information.

For more information about Navigation, refer to the sections describing the audio and telematics systems.

Selector

1. Switching on
2. Switching off (long press)
3. Brightness adjustment
4. Display height adjustment

Activation/Deactivation

► With the engine running, press any button to activate the system and deploy the projection blade.

► Press and hold button 2 to deactivate the system and retract the projection blade.

The state of the system is saved when the engine is switched off and restored on restarting.

Adjusting the height

► With the engine running, adjust the display to the desired height using the buttons 4:

• up to move the display up,
• down to move the display down.

Brightness adjustment

► With the engine running, adjust the brightness of the information display using the buttons 3:

• on the "sun" to increase the brightness,
• on the "moon" to decrease the brightness.

When stationary or while driving, no objects should be placed around the projection blade (or in its recess) so as not to impede its movement and correct operation.

In certain extreme weather conditions (rain and/or snow, bright sunshine, etc.), the head-up display may not be legible or may suffer temporary interference.

To clean the projection blade, use a clean, soft cloth (such as a spectacles cloth or microfibre cloth). Do not use a dry or abrasive cloth, or detergent or solvent products, due to the risk of scratching the projection blade or damaging the nonreflective coating.

Digital instrument panelWarning and indicator lamps