IONIQ 5 Companion

A real-time diagnostics app for the Hyundai IONIQ family. Connect an ELM327-compatible Bluetooth OBD-II adapter to monitor your battery, charging sessions, temperatures, and more — right from your iPhone or CarPlay.

Features

  • Real-time battery monitoring — State of charge, pack voltage, current, and power updated every 3 seconds
  • Per-cell voltage grid — Color-coded cell health visualization with min/max/avg/delta statistics
  • Battery temperature charts — Time series history of BMS max/min, heater, and coolant inlet temperatures
  • Battery Odometer — Lifetime energy charged vs. discharged with round-trip efficiency percentage
  • Battery Health — BMS-reported State of Health with explanatory info
  • 12V (auxiliary) battery panel — State of charge, voltage, current, and temperature for the 12V battery, plus DC-DC converter temperature, output voltage, output current, and HV pack input voltage
  • Charging session monitoring — Real-time power, voltage, current, SoC, and elapsed time during AC and DC charging, with EVSE info (max voltage, max current, present voltage/current, max power, Control Pilot duty cycle)
  • Tire pressure and temperature — All four tires with color-coded pressure ranges
  • Outside temperature — Ambient air temperature from the vehicle’s sensor
  • Dashboard status chips — Pre-conditioning (with ETA), Battery Heater, brake light indicator (configurable), headlights, and motor RPM
  • CarPlay integration — Driving, Charging, and EVSE tabs with live-updating gauges, sparklines, and data chips
  • Multi-language support — English, Nederlands, Deutsch, Español, Français, Svenska with in-app language picker
  • OBD-II adapter compatibility — Works with ELM327-compatible Bluetooth LE adapters (Veepeak, Carista, OBDLink CX, vLinker MC-IOS, and others)
  • Unplug reminder — Notification when the car turns off reminding you to unplug the adapter
  • Advanced Diagnostics — Hidden behind a 5-tap unlock in Settings: ECU scans, J1979 DTC scans with reassurance for known-benign codes (e.g. P0C17), Curated DID Scans with .iqlist sharing between testers, A-B-C Snapshots for discovering new sensor signals, Adapter Quiet Check for detecting foreign-app interference on the shared BLE adapter, and full diagnostic recording

Supported vehicles

The app ships per-vehicle registries covering:

  • IONIQ 5 — RWD SR/LR and AWD LR, model years 2024–2026
  • IONIQ 5 N — model year 2025
  • IONIQ 6 — RWD SR/LR and AWD LR, model years 2023–2024
  • IONIQ 9 — model year 2026

Support

If you have a question, found a bug, or want to request a feature, please open an issue on GitHub.

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