XC90 Keyless Entry Failure

Possible defective cable or plug connection to the door actuator. Have you checked the wiring harness that passes between the door and the body? These are known to fail.

Thanks, I haven't checked the harness yet. Is that a common failure point on the XC90? Should I look for broken wires or a loose connection in the plug?

Yes, it is a known weakness. Check for both broken wires and corroded connector pins. If inaccessible, a workshop visit is recommended.

Thanks! I took it to a local workshop, and the cable connection was indeed defective, just like you said. The repair cost 95€.