Citroen C5 Aircross Quiz
Electrical equipment

Automatic hazard warning lamp activation

In this manual: Electrical equipment
AAS - Parking Aid — 8Owner's Manual Citroën C5 II — 139Citroen C5 Aircross (2017- 2024) - Owner's Manual — 143Audio system — 14Overspeed control — 7Multifunction display — 4Driver information instrument cluster — 20Navigation assistance — 8Intruder alarm — 7Mechanical specifications — 9Power supply — 8Electrical equipment — 13Lighting and electrical equipment — 3Immobiliser — 4Sunroof — 10Exterior lighting / signalling — 38Multiplexing — 7Air conditioning — 7Body — 6General specifications — 9Automatic gearbox control — 3Exterior mirrors — 10Airbags — 5Defrost — 6Underinflation — 6Interior lighting — 4Wipers / Washers — 6Window lifters — 11Cooling — 8Opening management — 7Cruise control — 5Suspension — 4Grip management — 1Paint — 2Exterior lighting control — 1Indicators (turn signals) — 1Automatic lighting systems - General recommendations — 1Wiper control — 1Special position of the front wipers — 1
~1min read

The automatic hazard warning lamp function improves safety by automatically signalling sudden heavy deceleration or accidents.

The automatic hazard warning lamp function is managed by the BSI.

The automatic hazard warning lamp function operates according to the following parameters:

  • sudden heavy deceleration,
  • impacts (triggering of a pyrotechnic element).

Speed and deceleration information (supplied by the ABS ECU), combined with brake pedal application, allows the BSI to command automatic hazard warning lamp activation when necessary. In the event of an impact, the airbag ECU informs the BSI, which also commands automatic hazard warning lamp activation.

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