Citroen C5 Aircross Quiz
Defrost

Degraded modes

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

Overvoltage protection

If battery voltage is greater than or equal to 15 volts, defrost is deactivated.

Voltage exceeds 15 volts before 6 minutes of defrost operation

The BSI does not switch off the defrost indicator.

The defrost request remains active.

Defrost is reactivated if the battery voltage drops below 14.5 volts again and the 12-minute timer has not expired.

Voltage exceeds 15 volts after 6 minutes of defrost operation

The BSI switches off the defrost indicator and disables the defrost function.

Defrost is no longer activated, even if the battery voltage drops below 14.5 volts again.

If the user activates defrost while the battery voltage is greater than or equal to 15 volts, the BSI does not activate defrost.

Loss of engine running signal

When the engine running signal is lost, the defrost function is disabled, the timer is suspended and the defrost indicator is switched off.

  • Engine restarted less than 1 minute after engine shutdown: defrost is reactivated to complete the timer.
  • Engine restarted more than 1 minute after engine shutdown: defrost is not reactivated.

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A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.