Bolts that connect the automatic tailgate actuator lever to the tailgate can break. The broken bolts need to be drilled out and the holes re-threaded before a new bolt can be installed. If you hear any unusual noises when raising or lowering the power tailgate, have the mounting bolts inspected to make sure they are tight so the problem can be repaired before the bolts break.
Inspect Mounting Bolts if Noise Occurs When Raising/Lowering Tailgate on Mercedes-Benz ML63 AMG
Average mileage: 45,000 (45,000–45,000)
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The tailgate latch may stick causing a drain on the battery while the vehicle is parked.