My electronic key has been lost and my valet key which used to work, won't unlock the door.

Where else do you have locks? A locking glove compartment often has a separate key. The main key is supposed to open the door, open the trunk and start the vehicle. The other key is a Valet Key, the key is intended for people to give to valets to park their cars or to repair shops to use. The valet key will open the car door and start the car but will prevent someone from unlocking the glove box or the trunk.

You may be trying with a valet key.
Valet keys usually can unlock the driver's side door and start the car, but can't unlock the trunk or the glove box. This key is normally used when someone else operates your vehicle, such as a valet parking attendant.

not sure about the door... but a valet key is just that. it should allow a 'valet', person other than you, to drive your car without having access to any storage areas. therefore you can lock valuables in the trunk. the system should also disable any electronic trunk switches with that key in the ignition.

the valet key doesnt have a transponder chip in it, so it will allow physical turning of keyways and operations, but will not disable the alarm and often wont disable the immobilizer.

sorry to say i think you will need to get an autolocksmith , or main dealer to get you a functioning key with transponder chip mapped to your cars rfid system that will allow alarm to be enabled /disabled

Valet Key ? 0nly does the drivers door & ignition

check trunk fuse

There are Valet keys (often with a green knob) that will
only unlock the front doors and the ignition but not the
glove box nor boot/trunk.

When either the front door locks or the console button is
pressed, all the doors should lock. Likewise, when either
front door is unlocked, all the doors fuel filler lid and if
selected, the boot will also unlock.

Boot lock has three positions. Unlocked to the left,
automatic with the doors in the center, always locked to the
right. Simply remove the key in what ever position you desire.

The locks can get confused and not work correctly. Simply
sit in the car and manually lock all the doors. That will
usually get the locking module sane again.

you have to have a main key. you may be able to remove the panel and release that way. under dash. pull cable.

the dealer gave you a ignition key, instead of valet key.
valet key should open the driver door and ignition. nothing else. if the key can't ope the door. try the trunk. if it open the trunk, the it is a wrong key.

hii how are you sur

it can't be the valet key beacuse the valet key works the opposite...It opens the doors but not the trunk. That model car has almost like a "double lock" on the trunk. If you put the non-valet key in the trunk keyhole and turn the key all the way to the right and remove the key while turned all the way to the right it will lock and re-lock the trunk to where the valet key will not be able to open it. They made it that way so you can lock pesonal items in your trunk, keep the original key, give the valet the valet key, and the valet cannot open the trunk. You might want to check the lines for the central lock system by the Drivers side door for a leak. That system is ran by a pneumatic pump located under the back seat. Does the key work in the front passenger's door? If so then its probably the actual lock on the drivers side door. Hope this helped you out.

good luck

accept the regards