1. Introduction
The OBDSTAR ODOMASTER is an advanced Android-based 5-inch tablet designed for professional vehicle diagnostics and maintenance. It specializes in cluster calibration, odometer adjustment, OBDII diagnostics, and oil service reset functions. This device leverages the latest OBDSTAR technology, offering ease of use, extensive vehicle model coverage, fast operation, and durable features to meet the demands of automotive repair shops and service centers.

Figure 1: OBDSTAR ODOMASTER Main Interface
2. Package Contents
Upon unboxing, please verify that all items listed below are present and in good condition:
- 1 x Main Unit (OBDSTAR ODOMASTER Tablet)
- 1 x Charger
- 1 x OBD2 Connector (Main Cable)
- 1 x User Manual (this document)
- 1 x Packing Box

Figure 2: ODOMASTER Package Contents
3. Technical Specifications
| Feature | Specification |
|---|---|
| Operation System | Android 5.1.1 |
| CPU | RK3128 Quad-Core ARM Cortex A7 @1.2Ghz |
| Battery | 2500mA, rechargeable polymer lithium battery |
| Extension Memory Card | 32G Micro SD (TF) card supported |
| Storage Capacity | 16GB |
| LCD | 5.0 inch |
| LCD Resolution | 800*600 |
| Touch Screen | Capacitive touch screen |
| Wi-Fi | Supported |
| Working Temperature | -20℃ ~ 55℃ (14℉ ~ 131℉) |
| Storage Temperature | -20℃ ~ 70℃ (-4℉ ~ 158℉) |
| Weight | Approximately 700g |
| Dimension | 140mm x 89mm x 18mm |
4. Initial Setup
- Charging the Device: Connect the provided charger to the ODOMASTER main unit and a power outlet. Ensure the device is fully charged before first use.
- Power On: Press and hold the power button (usually located on the side or top) until the OBDSTAR logo appears on the screen.
- Language Selection: Upon first boot, you may be prompted to select your preferred language. The device supports English, Italian, Russian, German, Spanish, Polish, French, and Portuguese. English is the default. Note: Language can be changed once by providing the device's Serial Number (SN) to support.
- Wi-Fi Connection: Navigate to "Settings" on the main menu and connect to a stable Wi-Fi network. A stable internet connection is crucial for software updates and online functions.
- Software Update: After connecting to Wi-Fi, go to the "Upgrade" icon on the main menu. Perform a one-click upgrade to ensure your device has the latest software and vehicle coverage. Updates are frequent (every 2-3 days).
5. Operating Instructions
The ODOMASTER offers a user-friendly interface with various functions accessible from the main screen.
5.1 Main Functions Overview

Figure 3: ODOMASTER Functions List
- Petrol Diag / Mileage: Access vehicle diagnostic and odometer adjustment functions.
- Data Management: Manage saved data, backups, and recoveries.
- Personal Center: User account and device information.
- TeamViewer: For remote technical support.
- Settings: Configure device settings, including Wi-Fi, display, and sound.
- Upgrade: Update device software and vehicle databases.
5.2 Connecting to a Vehicle
- Locate the vehicle's OBDII port (usually under the dashboard on the driver's side).
- Connect the OBD2 Connector (Main Cable) to the ODOMASTER device.
- Plug the other end of the OBD2 Connector into the vehicle's OBDII port.
- Turn the vehicle's ignition to the ON position (engine off).
- On the ODOMASTER, select "Petrol Diag" or "Mileage" to begin vehicle communication.
5.3 Odometer Adjustment (Cluster Calibration)
The ODOMASTER supports odometer adjustment for a wide range of vehicles. Always ensure you have proper authorization and adhere to local laws when performing this function. Note that BMW models are not supported for this function.
- Connect the device to the vehicle as described in Section 5.2.
- From the main menu, select "Mileage" (or "Odometer" if available).
- Follow the on-screen prompts to select the vehicle make, model, and year.
- The device will guide you through the process, which may involve reading the current odometer value, entering the desired new value, and writing it to the cluster.
- Some vehicles may require specific adapters (e.g., FCA 12+8 Universal Adapter for certain Jeep/Dodge models, M043 cable for Ducati/KTM BRP motorcycles). Ensure you have the necessary accessories.

Figure 4: ODOMASTER Odometer Adjustment Interface
5.4 OBDII Diagnostics
The device supports standard OBDII functions for reading and clearing Diagnostic Trouble Codes (DTCs).
- Connect the device to the vehicle.
- Select "Petrol Diag" from the main menu.
- Choose "OBDII" or "Standard OBDII" from the options.
- You can then select functions like "Read DTCs," "Clear DTCs," "Read Live Data," etc.
5.5 Oil Service Reset
Perform oil service light resets for compatible vehicles, including Maserati models (as of July 2024).
- Connect the device to the vehicle.
- Select "Service" or "Oil Service Reset" from the main menu or within the vehicle-specific functions.
- Follow the on-screen instructions to complete the reset.
5.6 Airbag Reset Function
The ODOMASTER full package includes an airbag reset function for 38 car brands. This requires the purchase of an additional airbag reset kit.
- Ensure you have the airbag reset kit connected to the ODOMASTER and the vehicle as per the kit's instructions.
- Navigate to the appropriate function within the ODOMASTER software (usually under "Service" or a dedicated "Airbag" section).
- Follow the on-screen prompts to perform the airbag module reset.
6. Maintenance and Updates
6.1 Software Updates
Regular software updates are essential to ensure your ODOMASTER has the latest vehicle coverage and features. Updates are provided online and are free for the first 13 months. After this period, an annual subscription fee applies.
- Connect the ODOMASTER to a stable Wi-Fi network.
- Tap the "Upgrade" icon on the main screen.
- Follow the on-screen instructions to download and install available updates.
6.2 Device Care
- Keep the device clean and free from dust and moisture.
- Avoid dropping the device or subjecting it to strong impacts.
- Store the device within the recommended temperature range (-20℃ ~ 70℃).
- Use only the provided charger and cables to prevent damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or faulty charger. | Charge the device for at least 30 minutes. Ensure the charger is properly connected and functional. |
| Cannot connect to vehicle. | Loose OBDII connection, vehicle ignition off, or incompatible vehicle. | Check all cable connections. Turn vehicle ignition to ON. Verify vehicle compatibility with the device's car list. |
| Software update fails. | Unstable Wi-Fi connection, insufficient storage, or server issues. | Ensure a strong Wi-Fi signal. Check available storage. Try updating again later. Contact support if the issue persists. |
| Odometer adjustment not working for specific model. | Requires special adapter (e.g., FCA 12+8, M043 cable) or model not supported. | Refer to the device's "Help" function for specific vehicle requirements. Ensure you have the correct adapters. Note that BMW models are not supported. |
8. User Tips
- Always perform a "Date Backup" before attempting any significant changes to a vehicle's system, especially odometer adjustments. This allows for "Date Recovery" if needed.
- Utilize the built-in "Help" functions on the device. These include testable vehicle models, upgrade announcements, feature descriptions, help notes, and wiring diagrams, which can be invaluable during operation.
- Keep your device updated regularly via the "One-Click Upgrade" feature to ensure compatibility with the latest vehicle models and access to new functions.
- For specific vehicle models like 2021 Jeep Grand Cherokee, ensure you have the FCA 12+8 Universal Adapter. For Ducati/KTM BRP motorcycle recalibration, the M043 cable is required.
9. Frequently Asked Questions (FAQ)
- Q: Does the ODOMASTER support mileage correction?
- A: Yes, the OBDSTAR ODOMASTER is specialized for cluster calibration and odometer adjustment (mileage correction) for a wide range of vehicles.
- Q: Is the ODOMASTER compatible with Jaguar XF 2014 for ODO correction?
- A: Please refer to the device's built-in "Help" function or the official OBDSTAR website for the most up-to-date and specific vehicle compatibility list for odometer correction. Compatibility can vary by model and year.
- Q: Can I change the device language?
- A: Yes, the device supports multiple languages (English, Italian, Russian, German, Spanish, Polish, French, Portuguese). English is default. You can change the language once by providing the device's Serial Number (SN) to customer support.
10. Warranty and Support
10.1 Warranty Information
The OBDSTAR ODOMASTER comes with a one-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or use of non-original accessories.
10.2 Software Updates and Subscription
The device includes free online software updates for the first 13 months. After this initial period, a software subscription fee of $199 USD per year is required to continue receiving updates. The update cycle is short and fast, typically every 2-3 days, ensuring continuous improvement and expanded vehicle coverage.
10.3 Technical Support
For technical assistance, please contact your distributor or the official OBDSTAR support channels. The device also features a "TeamViewer" application for remote support, allowing technicians to diagnose and resolve issues directly on your device.
For specific vehicle compatibility questions or issues requiring special adapters (e.g., FCA 12+8 Universal Adapter, M043 cable, airbag reset kit), please consult the device's built-in "Help" function or contact support for guidance.