open the bonnet and as you stand facing the car small black rubber pyramid sticking out of slam panel is the top part remove headlight to gain access to main part of switch applicable to my year 2000 one anyway
Kept happening on my own Mondeo. In the end removed the horn in the boot. Later found out it was the bonnet switch. Either replace it or give it a good going over with WD40. Worth a try.
Need to get it checked for codes by a dealer or similar that can take out codes which will refer to what part of the system has triggered the alarm i.e pin point it to which door switch or bonnet switch or if its a voltage drop issue etc.
There's no sensor for the backup alarm. It's either wired to the reverse lamp switch (or corresponding circuit from the transmission ECU if you're running an Allison) or spliced into the reverse lamp circuit. Either the alarm's not getting power, it's not grounded, or the alarm itself is faulty.
voltage sensor, alarm circuit, Pulse generator, counter, register and timing circuits.
A simple fire alarm has a sensor or switch that reacts to fire or smoke and trips a device that makes noise. For instance, you could use a string pulling on a switch that is held open by the string until the string catches fire, closing the switch and ringing a bell.
open bonnet and alarm horn is on top rite below black perforated cover. if you unplug it it will still sounds the alarm siren
Go to google type MIREZ he has the information you need on site
Smash the driver's side window in with a hammer then try to hotwire it. Should activate the alarm nicely.
I have a Mk2 and have disabled the alarm system because it kept going off at random. The main problem seems to be the bonnet (engine hood) switch, which on mine is above the left headlamp (headlight). Covered in a protective rubber cap. Well instead of buying a new one I simply cut the wires, that's it! You can also reach into bodywork on left inside boot (trunk) and pull wires from the horn!!! Note: val edited this for American translations of European terms for hood and trunk.
switch on inside of b pillar beside drivers seat, not sure which one, there are 2, press switch and lock van within 30s, alarm is over-ridden until van is opened again.
if you find out let me know, my c200 kompressor is p.ing me off,I've had nothing but trouble with it, boot lid, alarm, all sorts of weird and wonderful faults. I wont be buying another merc, back to a volvo, no trouble with the electronics there
Open and close the bonnet !!