[SwissXC90]

If you still have the doors locked and deadlock engaged, you can unlock all doors (and deadlocks) with VIDA.
But that requires the ignition to be ON, which might stump you.
You might be able to trick the car into coming alive by hotwiring the fusebox to provide power where power is needed to allow VIDA to talk to the car, and for the car to wake up sufficiently.

That will at least allow the doors to be opened, and thus allow a through search of the car for the key. If it is there.

Note that a virgin replacement key will not unlock the vehicle until it has been paired to the vehicle - which requires the ignition to be ON, which may also stump you.

If you cannot locate any of the original physical keys, then your next steps are:

1. Flatbed vehicle to dealer (cannot be towed unless all wheels off ground)
2. Dealer gets identical physical keys from Sweden. Hopefully possible, as this will save changing physical locks.
3. Dealer programs new keys to car (immobiliser and remote lock/unlock) This also disables all lost keys, ensuring the car cannot be stolen.

NOTE THAT if you do not change the physical locks, someone with the original key can still access the interior of the vehicle.

If you wish to have full security, then the dealer needs to replace physical locks and keys, which of course costs a lot more.

Not a cheap exercise whatever you do, be expected to pay easily >500 GBP.