Try the manufacturer for opening instructions or if they can recommend a lock smith. For 300 you can buy a nice angle grinder and new cabinet.
Just grind the gap between door and cabinet then fit new lock
As far as I know all it needs to see is a resistance across the terminals to clear the light. If you could find what the value is then you could isolate the circuit.
You can have a motor trade policy for purpose of repairing cars or testing etc.
Adrian flux do a add on to give you comp cover on any car as long as your policy is with them.
Cheap tap and die set to clean the threads, I can put them in by hand. A strategic hole under the front 2 bolts saves taking off a layer of skin.
But the tray often doesn't get put back on straight away, getting it lined up on your back is worse than a gearbox install. The spanner is always...
Maybe some help, an e4 error on a rover is inside temp sensor issue. Where it is I don't know. But I looked for e4 air con fault rover. If you can find some images it may be the same system.
The bleed screw is on a loose bit of pipe down the UK passenger side. The master cylinder is tiny and be careful not to drop any of the black insulation in it. I use a syringe to slowly fill it, or you could suck some of the old fluid out first to change it.
Try bleeding the clutch. Mine goes like that every 6 months or so and air in the system is common, especially if the clutch or master cylinder has been changed in its life.