Hey all, Im a new member, but I really hope someone can help with this as Ive searched high and low for answer and couldnt find one, even the garage, who carried out the MOT and failed it, werent sure exactly what the problem was either. The irony of it all is I rarely use the rear doors/back seats so didnt even think to check before it went in for its MOT.
Car Details:
Saxo 1.1 Forte 2000 5 door
Problem:
As the title says, the drivers side rear door wont unlock. When you pull the lock, it moves a little bit, but doesnt fully unlock. The handle works OK so I dont think its that and points to something to do with the locking mechanism.
One thing I notice, on top of the door card, towards the rear, theres a little plastic viewing window thingy, on the side that works (n/s), Id say 4/5ths are red, but on the side that doesnt open (o/s), its all red. Im at a complete loss as to what this is and whether its anything to do with the problem, Ive also included some photos which might try and help explain.
Rear o/s door lock button thingy

Plastic o/s viewing window?

Plastic n/s viewing window?

Plastic o/s viewing window - not fully red?

Thanks in advance
Car Details:
Saxo 1.1 Forte 2000 5 door
Problem:
As the title says, the drivers side rear door wont unlock. When you pull the lock, it moves a little bit, but doesnt fully unlock. The handle works OK so I dont think its that and points to something to do with the locking mechanism.
One thing I notice, on top of the door card, towards the rear, theres a little plastic viewing window thingy, on the side that works (n/s), Id say 4/5ths are red, but on the side that doesnt open (o/s), its all red. Im at a complete loss as to what this is and whether its anything to do with the problem, Ive also included some photos which might try and help explain.
Rear o/s door lock button thingy

Plastic o/s viewing window?

Plastic n/s viewing window?

Plastic o/s viewing window - not fully red?

Thanks in advance