Replacement 4-point leveling system control unit with wireless option for compatible Lippert / LCI RV leveling systems that use a rear sensor.
The Lippert 333389 is a replacement control unit for compatible 4-point RV leveling systems. The control box is the electronic controller that communicates with leveling system components and helps manage leveling operation.
This controller is commonly listed as a 4-point leveling control unit with wireless option. Lippert support documentation identifies part 333389 as a 4-point leveling controller for systems with a rear sensor, so the existing system configuration should be verified before ordering.
Replacement controller for compatible 4-point RV leveling systems
Commonly listed as a control unit with wireless option
Identified for 4-point leveling systems that use a rear sensor
OEM-style replacement controller for supported LCI leveling applications
This controller is not universal for every Lippert, LCI, HappiJac, or 4-point leveling system. Lippert documentation identifies 333389 for 4-point leveling systems with a rear sensor. Systems without a rear sensor may use a different controller, such as 2020003067. Before ordering, verify the existing controller part number, leveling system type, rear sensor configuration, connector style, and any fault codes shown on the leveling control panel.
Before Starting: Park the RV safely, support as needed, and disconnect 12V power before servicing leveling system electronics. Follow the manufacturer’s service procedure for controller replacement and calibration. Basic Replacement Steps: 1. Confirm Compatibility: Verify the existing controller part number, system type, rear sensor configuration, and connector layout. 2. Record System Information: Note any fault codes, symptoms, or panel messages before removing the old controller. 3. Disconnect Power: Turn off 12V power to help prevent electrical damage or accidental leveling system operation. 4. Document Wiring: Take clear photos of each connector, harness, and controller orientation before unplugging anything. 5. Remove Old Controller: Disconnect harnesses and remove the existing control box from its mounting location. 6. Install Replacement Controller: Mount the replacement controller and reconnect all harnesses in the correct locations. 7. Inspect System Wiring: Check connectors, grounds, sensor wiring, jack wiring, and battery voltage before testing. 8. Test and Calibrate: Restore power and follow the required setup, zero-point, or calibration procedure for the leveling system.
Package Contents: • Lippert 333389 4-point leveling control unit NOT Included — May Also Need: • Leveling touchpad or control panel • Rear sensor • Sensor harnesses or jack wiring • Jack motors, landing gear legs, or hydraulic components • Mounting hardware, if existing hardware is missing or damaged • Additional connectors or wiring repair parts This listing is for the replacement control unit only. Inspect sensors, wiring, grounds, battery voltage, touchpad, and jack components if leveling issues continue after replacement.
To confirm compatibility before ordering, have the following ready: • Existing controller part number • Leveling system brand and model, if known • Whether the system uses a rear sensor • RV make, model, and year • Photos of the existing controller and connectors • Any error code or symptom shown on the leveling control panel Why this matters: Lippert leveling controllers can differ by system type, rear sensor configuration, connector layout, and software/hardware version. Matching the original controller and system configuration helps avoid ordering a controller that will not connect or function correctly.
Match this control box by existing controller number, leveling system type, rear sensor configuration, connector layout, and service documentation whenever possible.
If replacing the control box does not restore operation, inspect the touchpad, rear sensor, wiring harnesses, grounds, battery voltage, jack motors, hydraulic/electric components, and required calibration procedure.