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Hi, my name is***** don't understand this statement "my accuate and sometimes doesn't work at all the first time I push the button". Can you elaborate on the problem?
Ok, the common problem with the rear hatch not releasing is a faulty trunk lock. The lock includes the actuator. You can try having the mechanism lubricated and adjusted. If you have no success you will probably need to replace the hatch lock assembly.
If your rear suspension is dropping overnight it indicates a leak in the rear air springs. You will need to have the air springs checked for leakage and most likely will need to replace the air springs.
I meant to say "faulty hatch lock" in my first reply.
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Just checking in. Did you need further assistance?