Oct. 12, 2026
Have you ever bought a vehicle and realized it did not come with a power tailgate?
When loading groceries, luggage, tools or other equipment, a power tailgate can make everyday driving more convenient by allowing the rear hatch to open and close with less effort.
But what happens when a vehicle already has an electric tailgate and begins to experience problems after modification?
Armor protection, heavier ballistic glass, off-road accessories or a rear spare tire carrier can significantly change tailgate weight, load distribution and operating conditions. The original power liftgate may then move slowly, stop halfway, trigger anti-pinch protection unexpectedly or produce abnormal noise.
These situations lead to one key question:
How can we make a vehicle smarter, safer and more reliable without compromising the performance of its modified systems?
At Guangzhou Tomaster Auto Parts, the answer begins with understanding the actual vehicle application and developing the right modification solution.
（https://www.youtube.com/embed/jGe-W9UUtsw?si=fV3-_kAlJ4-_cIKS）
For drivers who frequently carry luggage, shopping bags, tools or equipment, a power tailgate can improve everyday convenience.
For vehicles without a factory-installed power tailgate, a customized electric tailgate solution may be possible depending on the vehicle model, electrical architecture, mounting structure and compatibility requirements.
However, adding an electric tailgate is not simply installing a motor and two struts.
A suitable solution should consider:
Vehicle model and year
Tailgate structure and weight
Installation space
Mounting brackets and connection points
Electrical compatibility
Opening and closing control
Anti-pinch and operating safety
The goal is to improve convenience while maintaining compatibility with the original vehicle structure and electrical system.
For distributors, importers and professional modification shops, proper vehicle information and technical evaluation are the first steps in selecting a suitable solution.
An OEM power liftgate is designed around the vehicle's original configuration.
Its performance depends on factors such as:
Tailgate Weight + Center of Gravity + Strut Force + Motor Torque + Mounting Geometry + Control Calibration
Vehicle modification can change these conditions.
Ballistic protection may add heavier glass and armor components. Off-road modifications can introduce additional accessories. Rear spare tire carriers can add extra mass and mechanical load to the rear hatch.
The original system may then operate outside its intended design range.
Possible symptoms include:
Tailgate cannot fully open
Stops halfway
Slow or unstable movement
Unexpected anti-pinch activation
Excessive motor load
Abnormal noise
Additional stress on brackets or related components
Not every failure has the same cause. Before replacing components, the actual vehicle configuration and root cause should be evaluated.
Armored SUVs can have very different requirements from standard passenger vehicles.
Ballistic glass, armor materials and reinforcement structures may substantially increase rear tailgate load.
A power liftgate that operated correctly before armoring may no longer provide suitable performance afterward.
A customized armored SUV tailgate solution should evaluate:
Actual tailgate weight
Additional load
Required opening and closing force
Motor torque
Heavy-duty electric strut specifications
Mounting strength
Working travel
Durability and temperature requirements
Environmental protection
Anti-pinch and control compatibility
Specifications should be determined according to the actual vehicle and application. A solution for one armored SUV should not automatically be applied to another.
For armored vehicle manufacturers and professional upfitters, the process should begin with engineering requirements and appropriate validation.
Off-road vehicles are often modified with:
Rear spare tire carriers
Ladders
Storage systems
Camping accessories
Other heavy-duty equipment
When these components are mounted on or supported by the rear hatch, they can change load distribution and increase mechanical stress on the tailgate system.
Rear spare tire carriers are especially challenging because both the added weight and its position affect the system.
Engineering evaluation may need to consider:
Weight and position of added equipment
Load on the tailgate and hinges
Opening and closing force
Motor performance
Mounting geometry
Bracket strength
Movement clearance
Durability requirements
Simply installing a stronger strut does not necessarily solve the problem.
The motor, brackets, control system, hinges and overall mechanical design must work together.
Heavy-duty electric tailgate solutions should therefore be selected according to the complete vehicle application, not only one component specification.
When a power liftgate fails after modification, replacing one component without identifying the root cause may not provide a durable solution.
A more systematic process is:
Vehicle Application → Load Evaluation → Force Requirements → Motor Performance → Structural Assessment → Prototype → Testing → Validation
The purpose is to determine whether the proposed solution can meet the requirements of the modified vehicle.
Depending on the application, testing may include:
Opening and closing endurance
High- and low-temperature operation
Environmental protection
Connector or structural strength
Functional verification
Test conditions and acceptance criteria should be defined according to the project. Performance should be supported by test data rather than assumed from the appearance or size of a component.
This engineering-led approach helps modification companies, importers and distributors reduce the risk of selecting unsuitable products.
Guangzhou Tomaster Auto Parts focuses on customized automotive modification solutions, including:
Heavy-duty electric tailgate systems
Heavy-duty electric tailgate struts
Armored SUV tailgate upgrades
Off-road vehicle applications
Rear spare tire carrier solutions
Customized electric tailgate installations
Specialized heavy-duty vehicle projects
For a new project, useful information includes:
Vehicle make, model and year
OEM part number, if available
Tailgate and mounting-point photos
Additional equipment weight
Current failure symptoms
Required functions
This information helps establish the initial technical requirements and determine the next engineering steps.
The final solution depends on the actual vehicle configuration, intended application and technical validation results.
Making a vehicle smarter should not mean ignoring its mechanical requirements.
Making a vehicle more capable should not mean accepting unreliable operation.
Whether the goal is to add everyday convenience or maintain power tailgate performance after armor, off-road or rear spare tire carrier modifications, the right solution begins with understanding the actual problem.
Future engineering topics can include:
Why OEM power liftgates fail after modification
How additional tailgate weight affects performance
How to evaluate a heavy-duty electric tailgate strut
Why motor torque and mounting structure matter
Electric tailgate engineering for armored SUVs
Power tailgate solutions for off-road vehicles
Testing methods for reliability validation
The objective is to share practical engineering knowledge that helps automotive modification companies, importers and distributors make better technical decisions.
From everyday electric tailgate upgrades to armored SUVs, off-road vehicles and rear spare tire carrier applications, the core principle remains the same:
Understand the vehicle first, then design the solution around the actual application.
Guangzhou Tomaster Auto Parts provides customized electric tailgate and heavy-duty vehicle modification solutions for smarter, safer and more reliable vehicles.
Have a vehicle modification project?
Send us your:
Vehicle Model + Year + Modification Details + Current Tailgate Problem
to begin an initial application evaluation.
