How Does an RV Automatic Leveling System Work?

What is an RV Automatic Leveling System?

An RV automatic leveling system is an integrated electromechanical or hydraulic system that automatically levels your RV when parked. Instead of manually placing blocks under the wheels, the system uses sensors and motorized jacks to lift and stabilize the vehicle with the push of a button.

For RV manufacturers, choosing the right leveling system is critical to the end-user experience. A well-designed system adds significant value and differentiation to any RV model.

How Automatic Leveling Works

1. Sensor Detection

Modern leveling systems use solid-state tilt sensors (accelerometers) mounted on the RV chassis. These sensors continuously measure the vehicle's angle relative to horizontal along both the front-to-back (pitch) and side-to-side (roll) axes.

When the driver parks and activates the system, the control unit reads the sensor data to determine which corners of the vehicle are low and by how much.

2. Control Unit Processing

The electronic control unit (ECU) processes the sensor input and determines the optimal leveling sequence. The algorithm prioritizes:

• Initial stabilization: All jacks extend until they make contact with the ground
• Front-to-back leveling: The system adjusts front or rear jacks first
• Side-to-side leveling: Final adjustments for perfect level

Henghong's control systems use a logic sequence that minimizes total jack extension time while ensuring stable contact at all four (or six) points.

3. Jack Actuation

The type of actuation depends on the system:

Electric systems use DC motors driving mechanical screw actuators. When the motor turns, it rotates a lead screw that extends or retracts the jack leg. Henghong electric jacks feature:

• DC12V motor with 80W power rating
• 18-inch full stroke for most applications
• 2,500 to 7,500 lbs load capacity
• Automatic or manual control

Hydraulic systems use a DC motor-driven pump to pressurize hydraulic fluid. Solenoid valves direct fluid to individual hydraulic cylinders at each jack point. Features include:

• DC12V/24V pump unit
• 4T to 20T load capacity
• Faster operation speed
• Remote control operation

Key Components

Automatic vs Manual Operation

Most Henghong systems support both automatic and manual operation:

• Automatic: Press one button, the system handles everything
• Manual: Control individual jacks for fine-tuning or uneven terrain
• Remote: Some models include wireless remote for operation outside the vehicle

Safety Features

Modern leveling systems include multiple safety mechanisms:

• Ground detection: Stops jack extension when ground contact is made
• Overload protection: Prevents operation beyond rated capacity
• Auto-retract: Retracts jacks when the vehicle starts
• Emergency manual override: Hand crank operation if power is lost

Henghong systems are tested for 600+ cycles and include a 1-year warranty. Our electric jacks undergo salt spray testing (72 hours for powder coating) and full load testing before shipment.

Choosing the Right System

The right leveling system depends on your RV type:

• Travel trailers: Electric tongue jacks + stabilizer jacks (2,500-5,000 lbs)
• Fifth wheels: Automatic leveling systems (6,000-8,000 lbs per leg)
• Motorhomes: Hydraulic leveling systems (up to 20T capacity)

As an Intertek-verified manufacturer with 22 years of industry experience, Henghong offers both electric and hydraulic solutions customized to your OEM requirements.