Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Aids
Check the calibration software installed on the liftgate control module prior to performing extensive diagnostics, vehicles with the handsfree liftgate control option (TC2) require specific calibration software. Incorrect calibration software may cause the power liftgate system to become inoperative without setting any DTCs
If the liftgate will not release from the closed position, refer to Opening the Liftgate Without Electrical Power for the appropriate procedure
Power liftgate function will only be allowed if certain operating criteria are met. Any of the following may cause the power liftgate not to function:
- Vehicle is not in park
- System voltage is below 10.5 V
- Engine is cranking
- The vehicle doors are locked
- A liftgate control module DTC is set
- Liftgate motor excess current is detected which may be caused by a misaligned liftgate striker
- Interior trim and/or liftgate wedge/bumper misalignment
- Remote power liftgate functions may be disabled if a second keyless entry transmitter is inside the vehicle
Whenever the liftgate control module loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the liftgate control module.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.