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MG MGF Technical - Courtesy Light

My courtesy lights remained on yesterday while driving. Both doors were definately shut. Techinical question - What determines the coutesy lights to come on and stay on for a duration. Where are the sensors. Techinical answer required.
Martin

Q: Will it superlock?
Andy Gilhooley

Martin,

Could well be linked to the security locking and fault door lock on driver's side. What year is your car? A common problem is water getting into the door lock mechanism and leading to corrosion of the micro-switches in the door lock itself.

There is a lot of threads on this problem. Suggest you do a search of the archives.

Tony
Tony

Martin,

I believe the Multifunction Unit governs the timing of the courtesy lights. The switches for the lights are built into the door locks.

Sounds like you have a problem with one of the switches in the doors. If the stick then the lights go out several minutes later.

Try this

Alarm system test
The alarm system can be tested by following the procedure described below:
1. Ensure doors, bonnet and the boot lid are closed.
2. Sit in the driver’s seat and close the door.
NOTE: The next three actions must be carried out within 2 seconds.
3. Depress the driver’s doorsill button.
4. Switch the ignition on, off and on again.
5. Raise the driver’s doorsill button.
If the test mode has been entered correctly, the horns will give a short beep and the engine immobilisation buzzer will sound.
Opening either door, the bonnet or the boot lid, or operating the driver’s doorsill button, will cause the alarm LED to illuminate for approximately one second. If the LED does not illuminate, there is a system fault.
The volumetric sensor can also be tested while in test mode. To test the volumetric sensor, press the unlock button on the remote handset several times. The alarm LED will illuminate for approximately 1 second each time movement is detected in the vehicle.
The test mode is cancelled by switching the ignition OFF.

Hope that helps or points you in the right direction

Bruce
Bruce Caldwell

That's useful, thanks Bruce :o) That'll help us check the sensitivity of the volumetric sensor.

But the "doorsill button" - do you mean the locking pin on the top and towards the rear of the door trim?
Rob Bell

Yes Rob, The bit you push down to lock the doors.
Bruce Caldwell

Ah, very good news: I've suspected that the volumetric sensor on my car is too sensitive for ages - but seeing as I've very secure parking I never use it. Can find out now.

E
Ed Clarke

Thanks again Bruce :o)
Rob Bell

This thread was discussed between 15/07/2002 and 16/07/2002

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