In case its not sleep mode then check under the passenger seat for water or water bottles.
Possibly it needs a vehicle handover which is done with a tester but i kinda doubt its that .
Another possible but rare fault is the ignition lock .. it doesnt register that the key is out of the ignition so the fobs wont work .. again a tester to diagnose that fault .
Possibly it needs a vehicle handover which is done with a tester but i kinda doubt its that .
Another possible but rare fault is the ignition lock .. it doesnt register that the key is out of the ignition so the fobs wont work .. again a tester to diagnose that fault .