Hi 

i have a skoda Octavia diesel 1.9 2002 modal. I m face the problem central lock when I try to lock by remote but not locking 4 doors, only lock and unlock  back trunk by remote. I went best work shop but couldn't find the problems i also change the driver door inside control unit but also not solved the problem, still i m face the problem ....

please help me out...

Probably the door wiring loom on the drivers side. A check with VCDS will identify what door modules are seeing the control unit and what state they are in.

From Karnataka 

2 minutes ago, Tech1e said:

Probably the door wiring loom on the drivers side. A check with VCDS will identify what door modules are seeing the control unit and what state they are in.

 Iff possible to install other central lock new from market 

@Saleemulla - As Techie says, or there's a piece on the driver's door lock that can wear with similar effects.