I am afraid i cant get it to achieve lock which is a pain. I was going to go down the route of getting a re-transmitter as previously discussed but have got rather pre-occupied lately and its slipped down the priority list. (I had to fix the drivers side internal door pull which had been giving me trouble and then stopped working altogether. That was a detached cable but there is a bit of work in removing the doorcard and door subframe to get at it.)