Accessing your electric vehicle’s Battery Management System (BMS) data can provide valuable insights into its health and performance. For Hyundai Ioniq owners, utilizing OBD2 AT commands is a viable method to tap into this data. This article will guide you through understanding how to use Anydata Obd2 At Commands to retrieve BMS information from your Ioniq, drawing upon the experiences shared by EV enthusiasts.
One key aspect to understand about the Hyundai Ioniq’s communication system is its Controller Area Network (CAN) bus. Unlike some vehicles where the CAN bus traffic is readily observable, the Ioniq’s CAN bus operates more discreetly. It’s often described as “quiet,” meaning you won’t see a constant stream of data when simply monitoring the bus. Instead, data retrieval typically involves sending specific query requests and waiting for a response. This is crucial to know when you’re attempting to sniff or intercept data; passive monitoring alone won’t yield much information.
To actively retrieve BMS data, you can employ OBD2 queries. A user has reported success using commands in the format of 7E4#022101. This initial command, and subsequent ones such as 7E4#022102, 7E4#022103, 7E4#022104, and 7E4#022105, are examples of AnyData OBD2 AT commands that can be used to request specific data points from the BMS. While the exact meaning of the “02” preceding “2101” in these commands might require deeper CAN protocol analysis, these examples provide a starting point for exploration.
For a comprehensive understanding of the specific data points you can retrieve, the OBD-PIDs-for-HKMC-EVs GitHub repository is an invaluable resource. This repository catalogs a list of Parameter IDs (PIDs) relevant to Hyundai and Kia EVs, including the Ioniq. It details what each PID represents and how to convert the hexadecimal responses from your OBD2 queries into meaningful data. By consulting this resource, you can effectively decode the information obtained using AnyData OBD2 AT commands.
It’s important to note a practical constraint: the BMS and other control units in the Hyundai Ioniq only respond to OBD2 queries when the vehicle is in the ‘on’ state. Attempting to retrieve data when the car is off will not yield any results. Therefore, ensure your Ioniq is powered on when performing these diagnostic commands.
In conclusion, accessing Hyundai Ioniq BMS data via AnyData OBD2 AT commands is achievable by sending specific queries and understanding the vehicle’s CAN bus behavior. Utilizing resources like the linked GitHub repository for PID definitions is essential for interpreting the retrieved data. By experimenting with commands like 7E4#022101 and consulting available PID lists, you can gain valuable insights into your Hyundai Ioniq’s battery system. Good luck in your data exploration!
