Hi, does the car start and run?
If the car runs and the lights are flashing together it means that the battery in the remote control needs to be replaced.
The car starts and runs fine but if u park and want to lock the car with the remote the car locks and the green and red light flashes for 30 seconds.
Ok, that sounds like the batteries in the remote may be weak.
U are correct i checked with the spare remote and it works fine. Thanks u know ur stuff.
You're quite welcome