The Mercedes dongle, a small device that plugs into your car’s OBDII port, promises to connect your vehicle to your smartphone, unlocking a suite of features through the Mercedes Me app. But does it live up to the hype? This article delves into the functionalities and potential frustrations of using a Mercedes dongle.
Mercedes Dongle Functionality: A Limited Scope
While the Mercedes dongle is currently offered free for compatible vehicles, its functionality is somewhat limited. Primary uses include recording refueling data and tracking mileage. The app also offers features like a driving quality rating and real-time vehicle data displays, although these are less practical.
Mercedes Dongle Issues: Potential Headaches
Despite the convenience a Mercedes dongle offers, several issues can arise:
Data Loss and Limited Insights:
- Local Data Storage: All data, including refueling and trip information, is stored locally on your phone. Replacing your phone results in complete data loss, as the Mercedes Me web portal lacks comprehensive data synchronization.
- Lack of Fuel Economy Stats: While the app records refueling information, it doesn’t calculate fuel economy. You’ll need to manually compute this using the provided data.
Connectivity and Compatibility Challenges:
- Annoying iOS Prompts: iOS users face persistent connection prompts each time the engine starts and hourly while driving. While declining the prompt doesn’t prevent data recording, it creates a frustrating user experience.
- Reconnection Hassles: After each service or OBDII port access, reconnecting the app to the dongle can be problematic and time-consuming.
- Inconsistent Mileage: The app rounds up mileage, occasionally leading to discrepancies with the vehicle’s odometer.
Acquisition and Setup Complications:
- Dealer Communication Breakdown: Mercedes-Benz’s website offers a contact form for adapter installation assistance. However, responses can be unreliable, requiring users to independently arrange adapter acquisition and setup with a dealer.
- Coordinated Setup Requirement: Obtaining the dongle involves coordinating with both parts and sales teams for device procurement and Mercedes Me account setup, potentially creating a logistical hurdle.
Mercedes Dongle: Is It Worth It?
While the free price tag makes the Mercedes dongle appealing, the limited functionality, data management issues, and potential setup challenges may outweigh the benefits for some users. If you’re willing to navigate these potential hurdles, the dongle can provide basic vehicle data tracking. However, those seeking comprehensive vehicle insights and a seamless user experience might find the Mercedes dongle falling short.
The transferability of the dongle to other compatible Mercedes-Benz vehicles without Mercedes Me Connect is a positive aspect. If you frequently switch between eligible vehicles, the dongle can offer consistent data tracking across your Mercedes fleet.
