My car key battery died. I changed it but now it won’t unlock my car with the buttons on the key but I can open the car with the key itself. It’s a Seat Alhambra 2.0 2006. The red light on the key does flash when the unlock/lock buttons are pressed.
You'll need to re-pair the remote part of the key to the car.
Assuming it's the same on the 2006 as on the 2004 variety:
- Insert key into driver’s door lock.
- Turn the key to the unlock position 3 times and keep the key in the lock opening position for 5 sec.
- Remove the key.
At this point the LED on the driver's door should illuminate solid red to show it's in "programming mode" - at this point you have about 15secs to do the following:
- Press and hold the "lock" button.
- Still pressing the "lock" button - press the "unlock" button 3 times (yes I know..fiddly isn't it?)
- Release the lock button.
Now the LED on the door should flash to indicate that it's sync'd with the key. If you have any additional keys you need to repeat 4-6 for each of those (still within the 15sec window) as putting it in programming mode makes it forget all the existing remote fobs.