These are replaceables. Taking the battery out to change a lightbulb - hardly rocket science - even for idiots who design a car they are never going to drive, let alone own. I bet they wouldn't call themselves engineers, the "designer" word these days is "designer". Says it all, really.

I once had a shunt and the insurance company were charging me for the replacement of the radiator! A non-consumable item that should last the life of the car (like eg an engine). In the end the garage repaired it and I had to force the insurance company to forego the charge for something not done! I am not with them any more.

call me an engineer but it does grate when I see poor design.