Rear door won't open from outside

[CitroenC1]

Can someone more mechanical than me (about the level of a hedgehog) check if my conclusions are right.
Seat Leon 2010
unlock door with remote, hear all locks unlock
all doors open apart from rear driver's side. Feels locked.
this door will open from inside
once opened from inside, it will open from outside until locked again

I'm guessing the lock isn't quite releasing properly.

I've tried the "hitting the door hard" method. Next will be to try to take the door card off and check the connections and maybe attack with WD40 assuming I can get the card off. Never done that before.

Any advice gratefully received.

[CitroenC1]

Thanks for the replies chaps. It's starting fine but only does very short journeys so possibly the battery isn't getting charged well enough...

Edited by CitroenC1 on Thursday 19th October 18:08

[CitroenC1]

N.I. said:

You could try this https://www.youtube.com/watch?v=qWYkjlcR1Ws Drill exactly where he has drilled. WD40 will soften the grease around the inner gears. More is less. This part of the unit is completely sealed and if you spray too much you will flood the motors and it cant escape anywhere.

Great answer - many thanks!

Will give that a watch as it's not worth spending hundreds on - can open it without too many problems by leaning in from the front door. More of an issue is safety but this car never carries back seat passengers.

[CitroenC1]

Another "thank" for N.I. He only posted once but that link did fix my Leon rear door!