No experience of this, but suggest you ask your dealer to check if a fault code is stored, but if there is a keylock on the door it should open using a key. get it checked before it's out of warranty. one of my previous koreans would unlock/lock itself flash the hazards when using the remote OR key and that seemed to be incurable. it was approaching 3 yrs, had engine running problems so traded it in.

let us know if you get sorted.

The OP did state that he hired the car so therefore its not his problem.

Videodoctor, nice to see you are nice and pedantic, but I didn't see hired.. same advice to anyone, presume the hire car people called the breakdown services, but advice still stands. there would be less questions on these forums if some people who obviously have cars still under warranty bothered to ask their dealers first. I can thoroughly recommenf FRF chevrolet in swansea as a case in point for being helpful when i had some problems recently. problem not covered by warranty, but no charge sir for spending 20 minutes on car, giving me some advice and not charging me £1.50 for the fuse. I was quite happy to return a bit later with 6 bottles of wine for them. (AND i didn't even buy the car from them!)

Op asked a question. answer if there is a key and a doorlock to put it in, of course it should open manually.

It wouldn't stop me buying a car, its the same as the VW Passat a friend broke down at a set of traffic lights and as it had an electronic handbrake the car would not move as it locked on ! She had to sit there causing havoc on a hill until the RAC came !