Why does the keyless entry system not function?If the system does not function it may be limited.   See   Keyless Entry Limitations.  If the system still does not function use the remote control or the key blade to lock and unlock your vehicle.Why can I not lock my vehicle?If you electronically lock your vehicle with a rear door or the tailgate open, the system searches for a passive key inside your vehicle after you close the last door. If the system detects a key, all doors unlock indicating that a key is inside. Your vehicle locks if another passive key is within the detection range after you close the last door.