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MG MGF Technical - Alarm / Faulty door switch ?

Hi,
My neighbours are starting to fall out with me! My MGF alarm keeps going off, often at night. I think it may be associated with a 'sticky' drivers door switch (?) as often the coutesy light does not come on when opening the door and the warning does not sound when exiting the car with headlights still on. At the moment I've disconnected the horns.
Any thoughts / suggestions as how to remedy?
Thanks, Chris.
C Owen

Taxi radios can set them off too.
Leigh

Microwave ovens nearby can do it too!
Andy Dear

MG was one of a number of car makers that chose to ignore Government warnings about a change in radio-frequency allocated to car alarms - apparently on grounds of cost.

As a result, mobile phones, police radios, taxi-firms and microwave ovens, among other radio sources, interfer with the F alarm. Solving the problem goes beyond just decent shielding and entails eliminating beat frequencies as well.

The only compromise I've been offered is to make the system less sensitive by cramming the aerial under the dash into a tighter space. This is obviously a compromise because there comes a point when the blipper won't work either.

Just one more feature of the F that we learn to live with.

Chris
Chris

Surely the remote blipper receiver is entirely different from the microwave proximity detector which ses off the alarm????

The blippr receive antenna (a long bit of yellow insultated wire which runs from the ECU at the base of the centre console up inside the wiring loom is already tucked away as mauch it could possible be, which is why you almost have to be inside the car to open it!!!

If door switch is dodgy, then this would point to the problem, as the microswitch associated with it may well go open contact when it gets cold.

IMHO.

:-)
Sam Murray

I don't claim to be an electronic guru. I can only pass on the information I was given by MIRA. The bit that I really picked up on was the need for car makers to engineer out all beat frequencies as well the nominal operating frequency.

I am still curious why a microwave oven that has acceptable levels of radiation should set off my car alarm 30 feet away and through a 9inch brick wall.

Chris
Chris

This thread was discussed between 02/04/2008 and 03/04/2008

MG MGF Technical index

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