You have a broken wire.
Passenger door wont lock with central locking.
Turn it off and then on again.
Circuit testing and voltage drop test.
If it works sometimes you probably have a broken wire.
Again if one door doesn t work but others do the problem could be with the door lock solenoid.
If the remote still operates the drivers side door lock and it will manually unlock with the key it s possible the central lock mechanism in the drivers door is no longer sending a signal to all the other doors to lock unlock.
The solenoid is bad.
If you press unlock on the remote passenger door and boot unlock but not the drivers door so have to use the key in the lock but once open if you press lock the door locks but if you.
Leave for 10 15 minutes and reconnect make sure you have the radio code etc beforehand.
Somebody suggested disconnecting the battery for a bit and then reconnecting in the hope the central locking would reset itself but it has not made a difference.
The nearside rear door on my s max has a bit of an issue with locking.
Replacing it may require removing the car door panel.
Door locks on the passenger side will not open with the remote the master central locking module may be faulty.
If the lock isn t getting power hold the lock switch either up or down and then open and close the door repeatedly to see if the lock will work.
The central locking door lock mechanisms on saab 9 3s and 9 5s are known to occasionally stop working properly.
I have pulled the door card off and checked the cable from the button to the lock and lubricated it but it seems to move freely.
By which i mean lock all the doors the car and disconnect the battery.
Great tips for diagnosing a power door lock central locking or key fob issue on bmw and we show you the first steps to take.
When you hit the central locking button on the remote the affected door often won t lock or won t unlock if it was already locked.
This video is a demonstration of conventional methods used to prove an electrical device is faulty before replacing it.
It is possible to strip the unit down to repair it however it s not without.
Sometimes it will lock and sometimes it wont.
Links to buy below.
The two little bolts remove the white plastic thing the large three torx heads get the actual locking mech off.
The front passenger door does lock and unlock with the key.