I have a 1993 Disco 200tdi, It has a factory fitted immobiliser, and there are no aftermarket alarms immobilisers etc fitted It is absolutely Bog Standard. with no additional electrical items added. It has developed a problem the symptoms are.
Will only drive when the hazard lights are switched on.
If left for a while it will start occasionally. But will switch itself off as soon as you start to move or touch any switches etc.
Won't switch off if the hazards are on. even if you're stood outside the vehicle with the keys in your hand. I've removed the fuse for the hazards and this stops the indicators flashing but means if you drive it you've no indicators
I have disconnected all the wiring to the column switch gear and it doesn't make the slightest difference to the starting of the vehicle Once it dies you have to plug the connector with the hazard wiring in before it will restart. So I'm asuming it's the immobiliser and not the switch gear.
Anyone heard of this happening before and how did you cure it... It has been suggested that the crash sensor has activated/failed. and that the cure is to hold the bonnet switch down while holding the key in the preheat glowplug position. This confused me as surely this happens everytime you start the vehicle anyway (the bonnet doing the job of holding the pluger switch down)