try this little test ?... try opening the car with key only and see what it does regarding opening of the cars doors ? and check rear glass hatch ? if it seems to work ok after a few tests, then try your remote and see what happens then ! sometimes it can be due to your car battery, or actuators not working correctly, short in the wiring, bad earth connections, start with simple tests first then it will help narrow the problem. but in some cases you will then have to get a multimeter and do a thorough check of the door opening process, which can take a long time due to the electrics, plus its components that are used for the opening of the car system. or get an auto electrician to carry it out who will be able to locate the problem. good luck...… dave