Description of audible signal
An audible signal with a variable rhythm is emitted by the buzzer.
The rate of the audible signal increases as the vehicle approaches an obstacle.
The audible signal becomes continuous when the measured distance falls below 25 cm for lateral detection and 25 cm for central detection.
For lateral detection, the audible signal stops after three seconds when the distance no longer changes, unless the signal is continuous.

Description of audible signal
Key:
V: obstacle far from the vehicle
W: obstacle close to the vehicle


Time interval between beeps depending on distance
Intervals t1 and t3 become zero when the distance is less than the following values:
- 25 cm for lateral detection,
- 25 cm for lateral detection,
Important: The volume of the rear buzzer audible signal can be adjusted using the diagnostic tool.
Test yourself
A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.