C5 Central Locking

[silverownerme]

Can anyone help me,the central locking won,t open with one press of the remote.When I got the car it worked perfectly but in the last few months it developed this annoying habit.If I open the drivers door first the system will not operate until the passenger door opens any ideas please.Regards

[Johndouglas]

Have you tried a BSI reset? If not give it a try. In case you can't find the method, it's here:-

 

Put the driver's window down, lift the bonnet and ensure all equipment is switched off.

Ensure all doors are closed and remove key from the ignition.

Wait for 3 minutes, disconnect the vehicle battery.

 

 

Reconnect the vehicle battery, wait a further 10 seconds (do not open doors.).

Switch on the side lights through the driver's window.

Switch on the ignition and check system's functionality.

Hold lock button on key down for 10 seconds.

Remove key open & close door test central locking system.

Start the engine and complete the system's check.

Reset the clock and date.

Failure to follow this procedure could result in incorrect operation of many BSI related items.

[paul.h]

From your introduction post your car is a 1.6 hdi but what year is it ?

 

Have you tried using the spare key ?

 

I do not know if this applies to the C5 but on a C4 you can change how the doors unlock from the remote through the radio menu so 1 push just unlocks the driver's door and a second push is needed to unlock the passenger doors. Our previous C4 also had an update to stop the time and date resetting and this changed how the remote unlocked the doors - 1 push unlocked them all but once moving and using the autolocking, when you stopped and opened a front door the rear ones no longer unlocked so they could be opened from the outside unless the remote unlock button was used.