We’ve now fixed the main issues with the car itself. Like the power hood, the central locking just seemed to be bad earth/connection issue. Once I stripped off the actuator, greased it and put it back together, it worked fine.

We picked up a second hand driver’s door mirror from the ZRoadster forum and fitted that. Not as cheap a job as I was hoping but easy at least.

I haven’t yet managed to get the INPA diagnostics software working properly – it connects but refuses to complete the diagnosis process. I’ve ordered a new cable to see if that’s the problem but actually I’m not sure how useful it’s going to be. Following someone’s advice on the forum I stuck an old Bluetooth dongle on the end of the adapter for the unique BMW 20-pin connector and managed to get out the error code I was expecting, basically confirming a vacuum leak.

A little more visual inspection showed that the secondary air pump is knackered and detached from its mountings. And there’s a split in the air intake hose that connects to the MAF (mass air flow) sensor. All standard stuff and not really worth fixing before I pull the lump out.