1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your WZHDZ PowerStep Running Boards. These electric, retractable side steps are designed to enhance vehicle accessibility and appearance for Lexus NX models from 2023 to 2025. Please read all instructions carefully before beginning installation or operation to ensure safe and correct use.
2. Product Overview
The WZHDZ PowerStep Running Boards are an aftermarket accessory that provides a convenient step for entering and exiting your vehicle. They automatically deploy when a door is opened and retract when doors are closed, maintaining the vehicle's ground clearance and aesthetic when not in use. Constructed from high-quality aircraft-grade aluminum, plastic, and stainless steel, these running boards are built for durability and all-weather performance.

Image: A WZHDZ PowerStep Running Board shown in the deployed position on a Lexus NX vehicle, providing an extended step for easier access.

Image: A WZHDZ PowerStep Running Board shown in the retracted position, flush with the vehicle's undercarriage, maintaining ground clearance.
3. Package Contents
Verify that all components listed below are present in your package before beginning installation. If any parts are missing or damaged, please contact customer support.

Image: An exploded view of the WZHDZ PowerStep Running Boards kit, showing two pedal units, multiple brackets, wires, an ECU control box, and screws.
- Left Running Board (Pedal)
- Right Running Board (Pedal)
- Mounting Brackets (Multiple pieces)
- Wiring Harness
- ECU Control Box
- Mounting Hardware (Screws, bolts, washers)
- Installation Instruction Manual (Separate document)
4. Features
- Automatic Deployment: Steps extend and retract automatically with door operation.
- High Bearing Capacity: Designed to safely support passenger weight.
- Enhanced Safety: Anti-slip design on the step surface reduces the risk of slipping.
- Side Protection: Provides a degree of side protection for the vehicle body.
- Reduced Entry/Exit Height: Facilitates easier access for children, the elderly, or individuals with mobility challenges.
- Durable Construction: Made from aircraft-grade aluminum, plastic, and stainless steel for longevity.
- Weather Resistant: Long-lasting and durable finish suitable for all weather conditions.
- IP67 Waterproof Motor: The integrated motor and bracket assembly is rated IP67 for water and dust resistance, ensuring reliable operation in various environments.

Image: Close-up of the IP67 waterproof motor and bracket assembly, highlighting its anti-corrosion properties, stainless steel components, and specialized wire clamp.

Image: A detailed view of the running board's surface, showing the textured, anti-slip design for secure footing.
5. Specifications
| Specification | Detail |
|---|---|
| Model Number | DTB-NXX-QH |
| Compatibility | Lexus NX 2023-2025 (Sport Utility Vehicle) |
| Material | Aircraft-Grade Aluminum, Plastic, Stainless Steel |
| Color | Black |
| Placement | Right, Left (Vehicle Side) |
| Motor Protection | IP67 Waterproof |
| UPC | 751641115881 |
6. Setup and Installation
Professional installation is highly recommended for these power running boards. Incorrect installation can lead to product malfunction or damage to your vehicle. Refer to the separate, detailed installation manual included in your package for specific steps and diagrams. The following is a general overview of the installation process:
- Preparation: Park the vehicle on a level surface and engage the parking brake. Gather all necessary tools.
- Identify Mounting Points: Locate the factory attachment points on the vehicle's chassis, typically along the rocker panels.
- Install Brackets: Securely attach the mounting brackets to the identified vehicle attachment points using the provided hardware. Ensure all bolts are tightened to the manufacturer's specifications.
- Attach Running Boards: Mount the left and right running board assemblies to their respective brackets.
- Wiring Connection: Connect the wiring harness to the running board motors and the ECU control box. Route the wiring safely away from moving parts and heat sources. Connect the ECU to the vehicle's power source and door trigger signals as per the detailed instructions.
- Test Functionality: After installation, open and close each vehicle door to verify that the running boards deploy and retract smoothly and correctly.
- Final Inspection: Double-check all connections and hardware for tightness and proper alignment.

Image: A composite image showing the complete WZHDZ PowerStep Running Boards kit with all components, alongside a view of the running board installed on a vehicle.
7. Operating Instructions
The WZHDZ PowerStep Running Boards operate automatically. No manual intervention is required for deployment or retraction.
- Deployment: When any of the vehicle's doors are opened, the corresponding running board will automatically extend to the deployed position, providing a step.
- Retraction: When all vehicle doors are closed, the running boards will automatically retract and stow themselves neatly under the vehicle's rocker panels. There may be a slight delay before retraction.
Ensure that there are no obstructions in the path of the running boards during deployment or retraction to prevent damage.
8. Maintenance
Regular maintenance will ensure the longevity and proper function of your PowerStep Running Boards.
- Cleaning: Periodically clean the running board surfaces with mild soap and water to remove dirt, mud, and road grime. Avoid abrasive cleaners or harsh chemicals that could damage the finish.
- Inspect Moving Parts: Annually inspect the pivot points, hinges, and motor mechanisms for any signs of wear, corrosion, or debris accumulation. Clean and lubricate as necessary with a silicone-based lubricant.
- Check Electrical Connections: Ensure all wiring connections are secure and free from corrosion.
- Hardware Check: Periodically check all mounting hardware for tightness. Re-tighten any loose bolts to prevent rattling or instability.
9. Troubleshooting
If you encounter issues with your PowerStep Running Boards, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Running board does not deploy/retract. | Loose electrical connection, blown fuse, motor obstruction, ECU malfunction. | Check all wiring connections. Inspect vehicle's fuse box for a blown fuse. Clear any obstructions around the motor and pivot points. If issues persist, consult a professional installer. |
| Running board makes unusual noise. | Lack of lubrication, loose hardware, debris in mechanism. | Clean and lubricate pivot points. Check and tighten all mounting hardware. Remove any debris from the mechanism. |
| Running board deploys/retracts slowly. | Low vehicle battery, motor wear, excessive dirt/grime. | Ensure vehicle battery is fully charged. Clean the mechanism thoroughly. If motor wear is suspected, professional inspection is recommended. |
For complex issues or if troubleshooting steps do not resolve the problem, contact a qualified automotive technician or the product manufacturer.
10. Warranty and Support
For information regarding product warranty, returns, or technical support, please refer to the documentation provided at the time of purchase or contact your seller directly. Keep your proof of purchase for any warranty claims.