Open-Source Project Brings Native-Style EV Routing to Hyundai and Kia Gen5W Head Units on Android Auto

An open-source project shared on GitHub aims to bring native-style electric vehicle routing features to Google Maps on Android Auto for compatible Hyundai and Kia vehicles equipped with the Gen5W head unit, specifically referencing models like the US Hyundai Ioniq 5 running software version NEEV.USA.0000.V015.012.260507. Reported capabilities include displaying battery percentage on arrival, calculating charging stops, estimating charge times, and triggering automatic battery preconditioning on the way to fast chargers.

Understanding the Modification

According to the repository documentation, the package relies on an existing modification called HMG Leafia Plus (specifically version v1.0.5) and uses binary deltas applied via the `lpatch` tool to modify the infotainment system's existing files rather than distributing proprietary Hyundai or Google files. The installer reportedly performs file checks and creates byte-for-byte backups, though the project creator explicitly notes that it is used entirely at the owner's risk and is not affiliated with Hyundai, Kia, or Google.

Key Reported Features

• Live Energy Modeling: The system sends a vehicle energy model to Google Maps using live battery energy data from the vehicle.
• Usable Capacity Learning: Usable capacity is reportedly learned from the Battery Management System (BMS) rather than relying on a static new-car assumption.
• Environmental Adjustments: Live outside temperatures are factored into the model to account for heating and rolling losses in cold weather.
• Charge Calibrations: Calibrations are based on real DC charging sessions and vehicle estimates, including the slower final 10–20% of charging.
• Automatic Preconditioning: When navigating to a fast charger over 50 kW within an hour, the vehicle is requested to warm the battery, a feature that can be controlled via the car's built-in settings.

Installation and Practical Steps

Users wishing to inspect or apply the software must do so manually. Verification and installation details can be reviewed directly on the official GitHub repository (`willemcvu/egmp-aa-ev-feat`).

• Requirements: Requires a US Hyundai Ioniq 5 with Gen5W software NEEV.USA.0000.V015.012.260507 and HMG Leafia Plus v1.0.5 pre-installed.
• Installation: Download the `-usb.zip` file from the repository's Releases section, extract the contents to an empty FAT32 or exFAT USB drive, plug it into the car's USB data port with the vehicle turned on, and respond to the NEMESIS prompt. The head unit will restart upon completion.
• Uninstallation: Can be removed through the NEMESIS Manager by navigating to `aa.ev.model`, selecting uninstall, and rebooting.

Logging and Data Collection

The tool can record operational logs covering battery energy, power, speed, temperatures, climate, charging, and route plans, while excluding location data, full VINs, and specific times of day. Logs are saved up to a 100 MB limit and can be exported by creating a folder named `egmp-aa-ev-logs` on a FAT32 or exFAT USB drive and plugging it into the vehicle's data port.