Boxster base, no alarm system, key has 3 buttons. I had two working remotes until yesterday. One of them refuses to unlock the doors / frunk / trunk.
Both keys will still manually unlock and start the car. Windows go up or down if key is maintained in lock or unlock position from outside.
I replaced the battery (twice) as the first obvious step, although it was not that old and the red led still flashes when I press a button. It shows the same led flash pattern as the working remote, depending on which button I press.
I've tried a few things mentioned in other threads :
- reversed battery polarity to short / reset transmitter
- force-pressed the battery and press buttons
- ignition on for a few seconds, then press remote button
- disconnected car battery overnight
No luck.
Any chance that the remote has been "unlearned" ? Is there any way to check ?
Should I go to the dealer and see if they can reprogram it ?
Maybe it's flashing the led but transmitting garbage - or not transmitting ?
I still have the second working remote...but would prefer to have 2, if it's a relatively simple fix.