Introduction
This manual provides essential information for the safe and effective use of your Thule Omnistep 500 Double Step 12V. Please read these instructions carefully before installation and operation to ensure proper function and longevity of the product. This double step is designed to provide convenient and secure access to your vehicle.

Figure 1: Thule Omnistep 500 Double Step 12V. This image shows the two-step aluminum construction with black anti-slip strips on each tread and the integrated 12V motor housing.
Safety Information
- Always ensure the step is fully retracted before driving.
- Do not exceed the maximum weight capacity of the step. Refer to specifications for details.
- Keep hands and feet clear of moving parts during operation.
- Regularly inspect the step for any signs of damage or wear. Do not use if damaged.
- Installation should be performed by a qualified technician if you are unsure of the process.
- Ensure all electrical connections are secure and properly insulated to prevent short circuits.
Components
The Thule Omnistep 500 Double Step 12V package includes the following main components:
- Thule Omnistep 500 Double Step 12V unit (pre-assembled)
- Mounting hardware (specific items may vary, refer to packaging)
- Electrical wiring harness (for 12V connection)
- User Manual (this document)
Setup and Installation
Proper installation is crucial for the safe and reliable operation of the step. Consult the dimensional drawing for precise measurements and mounting points.

Figure 2: Dimensional drawing of the Thule Omnistep 500 Double Step. This diagram provides detailed measurements in millimeters for the step's retracted and extended positions, as well as mounting hole locations.
- Preparation: Ensure the mounting surface on your vehicle is clean, flat, and strong enough to support the step and user weight. Identify suitable mounting points, considering the step's dimensions and clearance.
- Mounting: Securely attach the step unit to the vehicle chassis using the provided mounting hardware. Ensure all bolts are tightened to the manufacturer's specified torque settings. Use appropriate reinforcement if necessary.
- Electrical Connection: Connect the 12V electrical wiring harness to your vehicle's power supply. Ensure proper polarity (+/-) and fuse protection. It is recommended to connect the step to a circuit that is only active when the vehicle is parked or the ignition is off, or integrate it with a safety switch that prevents operation while driving.
- Testing: After installation, test the step's extension and retraction several times to ensure smooth operation and proper function of the motor. Verify that the step fully extends and retracts without obstruction.
Operating Instructions
The Thule Omnistep 500 Double Step 12V operates via a simple electrical switch.
- Extension: Locate the control switch (typically mounted inside the vehicle near the door). Press the switch to the 'Extend' position. The step will smoothly deploy to its full extended position.
- Retraction: Press the switch to the 'Retract' position. The step will smoothly fold back into its stored position under the vehicle.
- Safety Feature: Many installations include a safety interlock that prevents the step from being extended while the vehicle's ignition is on or the vehicle is in motion. Always ensure the step is fully retracted before driving.
Maintenance
Regular maintenance ensures the longevity and safe operation of your Thule Omnistep.
- Cleaning: Clean the step regularly with mild soap and water. Avoid abrasive cleaners or high-pressure washers, which can damage the finish or electrical components.
- Lubrication: Periodically lubricate the moving joints and pivot points with a silicone-based spray or light grease to ensure smooth operation and prevent corrosion.
- Inspection:
- Check all mounting bolts for tightness.
- Inspect the electrical wiring for fraying, cuts, or loose connections.
- Examine the step treads for excessive wear or damage to the anti-slip strips.
- Look for any signs of corrosion on metal parts.
- Winter Care: In freezing conditions, ensure no ice or snow obstructs the step's movement. Do not force the step if it is frozen.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Step does not extend or retract. | No power; Blown fuse; Loose electrical connection; Motor malfunction; Safety interlock engaged. | Check vehicle's 12V power supply; Inspect and replace fuse if necessary; Verify all electrical connections are secure; Ensure vehicle ignition is off if safety interlock is present; Consult a technician if motor is faulty. |
| Step moves slowly or with difficulty. | Lack of lubrication; Obstruction; Low battery voltage. | Lubricate moving parts; Remove any obstructions; Check vehicle battery voltage. |
| Unusual noises during operation. | Worn components; Lack of lubrication; Foreign object. | Inspect for worn parts and replace if necessary; Lubricate all moving joints; Check for and remove any foreign objects. |
If you encounter issues not listed here or if solutions do not resolve the problem, please contact Thule customer support or a qualified service technician.
Specifications
| Feature | Detail |
|---|---|
| Product Name | Thule Omnistep 500 Double Step 12V |
| Model Number | 307579 |
| Manufacturer Part Number | RG-091159 |
| Power Supply | 12V DC |
| Step Type | Double Step |
| Material | Aluminum (typically) |
| Item Weight | 22 pounds (approx. 10 kg) |
| Package Dimensions | 23.15 x 17.95 x 11.81 inches (approx. 58.8 x 45.6 x 30 cm) |
| Application | Recreational Vehicles (RVs), Caravans, Motorhomes |
Warranty and Support
Specific warranty details for the Thule Omnistep 500 Double Step 12V are not provided within this manual. Please refer to the warranty card included with your product or visit the official Thule website for the most current warranty information and terms and conditions.
For technical support, spare parts, or service inquiries, please contact your authorized Thule dealer or visit the Thule support section on their official website. When contacting support, please have your product model number (307579) and manufacturer part number (RG-091159) ready.
Thule Official Website: www.thule.com






