Central locking query

Oddly Godly

Zorg Guru (III)
Supporter
British Zeds
Joined
May 17, 2019
Points
129
Location
dunstable
Model of Z
z3 2.8
About three years again my alarm started going off intermittently. I found the tilt sensor had been submerged due to a faulty antenna grommet. Even after it had all dried out the alarm went off occasionally so I removed the fuse. This also stopped the central locking fro working. Last Saturday I removed the tilt sensor and replaced the fuse and so far the alarm has been fine.
However one of my two keys won't work the central locking. I've changed the battery but still no luck. It starts the car and opens the door manually. The light on the key lights up. The other key works fine.
Can I reprogram the key to the central locking? And can I do this without having to do the fully working key.
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