I would expect Mercedes to abide by a court order. This wouldn't be an issue if it wasn't a "smart car" and just has a plain old set of keys, the company wouldnt need to be involved at all. But they have an additional responsibility here because they can override the legal system in this case with no recourse.

Frankly they're lucky the ex husband killed himself. Could have been a very expensive lawsuit if he ended up hurting someone.