Citroen C5 Aircross Quiz
Defrost

Operating principle

In this manual: Defrost
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

FUNCTIONAL DESCRIPTION: HEATING / SIMPLE AIR CONDITIONING

FUNCTIONAL DESCRIPTION
The instrument cluster receives the defrost request from the heated rear window switch.
The instrument cluster sends a defrost request to the BSI.
The BSI checks that the engine is running and that the electrical load shedding level is compatible with the defrost request.
The BSI commands the instrument cluster to switch on the defrost indicator.
The BSI commands the heated rear window to switch on.
The BSI sends the mirror defrost command to the door modules.
The BSI manages a defrost timer (12 minutes), at the end of which the BSI commands the heated rear window to switch off. The BSI commands the defrost indicator to switch off at the instrument cluster and stops mirror defrosting at the door modules.

FUNCTIONAL DESCRIPTION: AUTOMATIC CLIMATE CONTROL

FUNCTIONAL DESCRIPTION
The climate control unit receives the defrost request from the heated rear window switch.
The climate control unit sends a defrost request to the BSI.
The BSI sends the climate control unit the command to switch on the heated rear window indicator.
The BSI commands the heated rear window to switch on.
The BSI sends the mirror defrost command to the door modules.
The BSI manages a defrost timer (12 minutes), at the end of which the BSI commands the heated rear window to switch off. The BSI commands the defrost indicator to switch off at the instrument cluster and stops mirror defrosting at the door modules.

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