Yes, the Carly OBD-II scanner and its companion app can register a new battery on many 2019 vehicles, but its compatibility is not universal. The process involves connecting the scanner to your car's OBD-II port and using the app to code the new battery to the car's Battery Management System (BMS). This is a critical step for modern BMW, Mercedes-Benz, Mini, and some Volkswagen/Audi models to ensure the vehicle's charging system operates correctly for the new battery's specifications, preventing premature failure.
Battery Registration vs. Coding
It's important to distinguish between these two functions:
- Battery Registration: This simply tells the car's computer that a new battery has been installed. The BMS then resets the adaptive charging strategy that was tailored to the old, degrading battery.
- Battery Coding: This goes a step further, informing the BMS of the new battery's specific attributes, such as its type (AGM or lead-acid), capacity (Ah), and sometimes even the manufacturer. Not all vehicles require coding, but most require registration.
The table below outlines Carly's general capability for 2019 models from key brands that require this procedure.
| Brand | Battery Registration Supported? | Battery Coding Supported? | Key Considerations |
|---|
| BMW | Yes, for most models | Yes, for most models | Highly dependent on the specific model and iDrive system version. |
| Mercedes-Benz | Yes, for many models | Limited support | Registration is often sufficient; coding is less common. |
| Audi / Volkswagen | Yes, for some models | Limited support | Support is more sporadic compared to BMW; varies by model year and platform. |
| Mini | Yes, for most models | Yes, for most models | Shares technology with parent company BMW. |
| Volvo | Limited support | Limited support | Not a primary strength of the platform; check specific model compatibility. |
| Land Rover | Limited support | Limited support | Support is inconsistent; professional tools may be required. |
The Crucial Steps for a Successful Registration
Before you begin, you must know the exact specifications of your new battery. The process typically involves:
- Connecting the Carly adapter to your OBD-II port (usually under the dashboard).
- Opening the Carly app and allowing it to connect to your vehicle.
- Navigating to the "Service" or "Coding" section and selecting "Battery Registration."
- Entering the new battery's details as prompted (e.g., type, Ah rating, and manufacturer code if required).
- Following the on-screen instructions to complete the process.
Final Verdict: Carly is a powerful and cost-effective tool for enthusiasts, but its effectiveness for battery registration on a 2019 car depends entirely on the specific make and model. Always check Carly's official compatibility list for your Vehicle Identification Number (VIN) before purchasing to confirm support.
