So, I've decided to take my E60 and put it back on the road but there are a few issues. I need help.

1st, a rear number plate light bulb is gone and fitting a new one doesn't cure it, do I need a BMW Specific bulb?

2nd, there is a driving stability control failure, no ABS, Traction Control, it was plugged by a mate who says its some sensor under the front seats, is this the occupancy sensor?

3rd, the restraint system is showing an error so no Airbags or seat belt tensioners, is this related?