2017-2023 Porsche Panamera Power Liftgate Struts: Causes of Failure and Replacement Guide

Symptoms of Failure

When the power liftgate struts on a 2017-2023 Panamera begin to fail, the symptoms are usually obvious and consistent. Because the system relies on two motors working together, a problem with one can cause a variety of issues.

• Liftgate Stops Mid-Travel: The most common symptom is the liftgate opening or closing partially, then stopping and sometimes reversing. This can be caused by a weak motor creating too much resistance, which the control module interprets as an obstruction.
• Three Beeps, No Movement: The system may unlock the latch, beep three times, and then refuse to move the liftgate automatically. According to the owner's manual, this can indicate an overload on the drive motors or low vehicle battery voltage.
• Grinding or Whirring Noises: A failing motor or stripped gear inside the actuator can produce grinding or high-pitched whirring sounds during operation.
• Slow or Strained Operation: The liftgate may move much slower than usual or seem to struggle, especially in cold weather when the components are stiffer and the battery provides less power.
• Liftgate Won't Stay Open: If the internal mechanism fails, the strut may not be able to support the weight of the heavy liftgate, causing it to slowly drift down or slam shut unexpectedly.
• Trunk Won't Latch: In some cases, a failure in the power system can cause the liftgate to come down and then reopen itself without latching, as if an object were blocking it.

Buying a Used Liftgate Lift Support

Purchasing a used OEM lift support for a Panamera can be a cost-effective solution, but careful inspection is critical. These are complex electromechanical parts, and a faulty used unit will not solve the problem.

What to Check Before You Buy

• Verify Part Numbers: The most critical step is to ensure compatibility. These struts are specific to the standard Panamera hatchback. They will NOT fit Sport Turismo (wagon) or Turbo models. The OEM part number has several revisions; 971827851F is the latest version and replaces older numbers like 971827851, 971827851B, and 971827851D. Always aim for the latest revision if possible.
• Physical Inspection: Examine the part closely. Look for any cracks in the black plastic housing, a bent or scored metal shaft, or damage to the electrical connector and its pins. There should be no signs of oily residue, which would indicate a seal failure.
• Donor Vehicle History: If possible, inquire about the donor vehicle. A part from a low-mileage, front-end collision vehicle is ideal. Avoid parts from cars that suffered a significant rear-end impact, as the struts could have been damaged from the force.
• Buy as a Pair: It is highly recommended to replace both lift supports at the same time. They wear at a similar rate, and replacing only one can cause the new strut to work harder, leading to premature failure. An imbalance in strength between the old and new strut can also cause the liftgate to twist or bind during operation.

Known Issues, TSBs, and Recalls

As of early 2026, there are no specific recalls or Technical Service Bulletins (TSBs) from the National Highway Traffic Safety Administration (NHTSA) that directly address the power liftgate struts on the 2017-2023 Porsche Panamera. Most reported problems are related to individual component wear and tear rather than a widespread manufacturing defect. Some owners have reported intermittent issues with the tailgate not closing properly, which can sometimes be resolved by resetting system settings in the PCM 🎬 Watch: A simple walkthrough for setting the rear hatch height. or clearing fault codes.

Cost Breakdown

Replacing the power liftgate struts on a Panamera can be expensive, especially when using new OEM parts. Buying used OEM parts offers a significant savings opportunity.

Replacement and Calibration

Replacing the liftgate struts is a moderately difficult job that a skilled DIYer can perform. The main challenge is carefully removing interior trim panels without breaking any clips.

Difficulty: 3 out of 5

Estimated Time: 1.5 - 2 hours

Key Steps:

1. Support the Liftgate: The liftgate is very heavy. Before removing the old struts, you MUST support it securely with a prop rod or have a second person hold it.
2. Remove Trim: Carefully remove the interior trim panels on the D-pillars inside the cargo area to access the upper and lower mounting points and the electrical connector.
3. Disconnect and Remove: Unplug the electrical connector for each strut. Then, remove the mounting bolts or clips at the top and bottom of the strut.
4. Install New Struts: Mount the new struts and connect the electrical plugs.
5. Reinstall Trim: Re-attach all interior trim panels.

Post-Installation Calibration

After replacement, a calibration or 'normalization' procedure is required for the system to learn the end points of the new struts. While a professional scan tool offers a specific function for this, you can often perform a manual reset:

1. With the new struts installed, manually and gently close the liftgate completely.
2. Use the button on the liftgate, key fob, or interior switch to power the liftgate fully open.
3. Once fully open, power it fully closed again using one of the buttons. This cycle allows the control module to learn the new limits.

You can also set a custom maximum opening height by manually moving the open liftgate to the desired height, then pressing and holding the 'close' button on the liftgate for about three seconds until you hear a confirmation beep.

Frequently Asked Questions