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Tom, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 25968
Experience:  ASE Certified Master Technician
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My 2005 Tucson has an electrical fault with the tailgate. The

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My 2005 Tucson has an electrical fault with the tailgate. The car does not detect when either the tailgate or tailgate window is open. After unlocking the vehicle and opening the tailgate to load, after a few moments the alarm system resets, locking the vehicle. Also rear courtesy lights do no work

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Customer: replied 3 years ago.
Shantal , I have not solved my electrical fault. Having had time to think about this fault I have reached the following: unlike the 4 passenger door, which each have a physical door switch that is activated when a door is opened, the luggage tailgate and tailgate window do not have this kind of switch. Their common connection is the rear door unlocking handle. This is a dual device, one lever for the window and one for the whole door. What should happen when either is operated is that the boot courtesy light should illuminate and a signal sent to the alarm system. This is not happening , so either the door lock is faulty, or the wire sending this signal is faulty. My question is how do I test for this fault and which is the cable(s) that might be faulty?

Regards Barry
OK the most common issue is the tailgate lock actuator is bad and will cause this issue it has the sensor internal in the actuator to let the vehicle know the hatch is open .This is what needs to be checked next for this issue .
Tom, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 25968
Experience: ASE Certified Master Technician
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