TeslaScope: OBD2 Diagnostics for Tesla Owners
TeslaScope is a free Android app that connects to your Tesla via a Bluetooth ELM327 OBD2 adapter and displays live CAN bus data, battery cell grid, gauges, and diagnostic information.
DevPulse Team
Tesla vehicles are packed with data — battery cell voltages, motor temperatures, thermal management states, power draw, state of charge at the pack level. The official app shows you a fraction of it. TeslaScope shows you the rest.
What TeslaScope Does
TeslaScope is a free Android app that connects to your Tesla via a Bluetooth ELM327 OBD2 adapter and reads live data directly from the CAN bus. No Tesla API account needed, no subscription, no cloud dependency — just your phone, a compatible OBD2 dongle, and your car.
The data it exposes goes well beyond what the official Tesla app provides, making it invaluable for Tesla owners who want to understand what their car is actually doing.
Battery Cell Grid
One of TeslaScope's standout features is the battery cell grid — a visual representation of individual cell group voltages across the battery pack. This is the data that tells you whether your pack is degrading evenly or whether specific cell groups are outliers. Monitoring this over time helps you understand your battery's health in a way that the official range estimate simply can't capture.
High cell voltage variance can indicate an imbalanced pack. Consistently low cell groups might explain unexpected range degradation. The cell grid makes this visible.
Live CAN Bus Gauges
TeslaScope surfaces live data from the CAN bus into a set of real-time gauges and readouts:
- State of charge (pack level, not just displayed %)
- Power draw and regeneration
- Motor temperatures (front and rear)
- Battery inlet and coolant temperatures
- 12V system voltage
- Odometer and trip data
Watch the gauges in real time during a drive to understand how your Tesla is managing power and thermal loads.
What You Need
TeslaScope requires a Bluetooth ELM327 OBD2 adapter compatible with Tesla's OBD2 port. Not all adapters work — look for ones specifically listed as Tesla-compatible. Once connected, TeslaScope pairs via Bluetooth and begins reading data immediately.
If you're a Tesla owner who wants deeper insight into your vehicle's systems than the official app provides, search for TeslaScope on Google Play.
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