Symptom: wing tiger central door lock remote control does not work outside the car.
   
     Solution: first verify the fault phenomenon, the remote control in the car work properly. In the car outside the remote control occasionally work, leaving a little bit away from the bus does not work, and under normal circumstances, the remote control distance should be more than 20m. Suspected remote control battery power loss, with the remote control and other normal vehicles to match the use of normal, that is not a transmitter problem. According to the circuit diagram analysis, remote control receiver installed in the GEM, there may be a receiver failure. WDS detection with no fault code, GEM self-test is also normal, check the line all normal. Then replace GEM, troubleshooting.