Planning the next
AO Silver Member
Join Date: May 2007
Location: United Kingdom
The door/bonnet/boot warning light system is really simple. The LEDs take +12v ( when the ignition is on ) and the door/boot locks/bonnet switch then earth the other side of the LED. It really is that simple.
So, ignoring the distance display for the time being, the only things that could affect the warning lights are a bad earth, no +12v supply or a catastrophic failure of the instrument panel. It is unlikely to be linked to a wiring loom fault as the warning lights for the doors/bonnet/boot are spread over two connectors. Similarly, if it was a bad earth, nothing would work as there is only one earth connection for the entire cluster.
So, no +12v supply? But then some of the other warning lights wouldn't work e.g. handbrake and 'CODE' lights. And I doubt if the speedo would work then.
For similar reasons, I cannot believe a catastrophic failure would only affect a few LEDs and the odometers and not the more complex speedo & tacho driving logic.
It doesn't really make sense.
You have checked both fuses? F14 ( 25 Amp ) is the permanent live supply and F15 ( 10 Amp ) is the ignition switched supply. Both are on the main fusebox.