184000458 - I58 INTERIOR LIGHTS DO NOT GO OFF AT KEY-ON

The courtesy lights work for the timed period and controlled manually, but the timing function does not stop when the ignition is switdhed on.
When one of the side doors is opened, the courtesy light is turned on for a period of 3 minutes and the lights are switched on/off gradually (dimmer effect). When the car is unlocked after activation of the remote control, the courtesy light is switched on for a period of 15 seconds, which is interrupted by the ignition ON signal.If the ignition ON signal is present following the opening of a door, the courtesy lights come on.
Results of the tests
1CHECK ON INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of the bulb holder assemblies and the operation of the courtesy light switchesContinue to Step 2Courtesy light bulb faultyChange the bulb Op. 7040E80
Front courtesy light faultyRestore or replace the courtesy light Op. 7040E10
Rear courtesy light faultyRestore or replace the courtesy light Op. 7040E16
Daylight sensorCheck the condition of the bulb holder assemblies and the operation of the courtesy light switchesContinue to Step 2Courtesy light bulb faultyChange the bulb Op. 7040E80
Front courtesy light faultyRestore or replace the courtesy light Op. 7040E10
Rear courtesy light faultyRestore or replace the courtesy light Op. 7040E14
2CHECK ON INTERIOR LIGHTING ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • connections between courtesy lights and Body Computer;
  • connection to +30 courtesy lights;
  • courtesy light earth connection See E2510 COURTESY LIGHTS
Continue to Step 3Connections not correctRestore the connections See E2510 COURTESY LIGHTS
Faulty earth on courtesy lightsRestore the correct earth connection See E2510 COURTESY LIGHTS
3CHECK ON SIGNALAll OKProblems metOperation
Check the presence of +15 on the Body Computer: See E2510 COURTESY LIGHTS Continue to Step 4The signal does not reach the Body ComputerRestore the correct supply to the Body Computer.If necessary, replace the Body Computer Op. 5505A32
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis.