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I have a Hyundai Tucson 2.7L Petrol 2007. When I get out of my car to lock the door the remote locking device doesn't always work. I have discovered that if I get back in the car, turn on the ignition and firmly push the automatic gear lever up and to the left, the device will then work when I try it again. This is not only a nuisance but has confused both my mechanics and Hyundai who were going to do some research and get back to me - I could be on the rest home by then! Do you have any ideas as to what is causing this? It seems to be happening a little more frequently now - at least 3 0r 4 times a week. Thanks