Free · Open source · GPL-3.0

BeeEmUu v2.2.0 is here — walkthrough JSON export, dark-mode snapshots, and more.

BMW diagnostics,
on your terms.

BeeEmUu is the open-source alternative to dealer tools. Read fault memory, stream live data, and run service functions on E-series (K+DCAN) and F/G-series (ENET/DoIP) BMWs — with no account required, no telemetry, and no paid tier.

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Live Gauges

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Demo runs in your browser via frontend/live_gauges.js. Source of truth for the byte patterns is the Rust simulator in src-tauri/src/transport/sim.rs::broadcast_frames_at; the public-site mirror and the desktop-app mirror are pinned to byte-for-byte parity by frontend/live_gauges.test.js. Real-car scales need E46 verification — see docs/validation/can-broadcast.md.

Everything a dealer tool does — free

BeeEmUu replaces the most-used diagnostic operations of closed-source dealer software. No subscription, no cloud account, no telemetry — the tool runs entirely on your machine.

🔎

Fault memory

Read DME, EGS, DSC, KOMBI and other modules. Freeze frames preserved before you clear anything, with 440+ decoded BMW and SAE codes.

📈

Live data

Stream real-time CAN broadcast frames with gauges and peak tracking — RPM, coolant and oil temp, vehicle speed, battery voltage, throttle.

🧰

Service functions

CBS reset, battery registration, steering-angle calibration, DPF regeneration, Valvetronic and EGS adaptation — documented and honest about coverage.

🔌

K+DCAN & ENET

E-series over K+DCAN (FTDI) and F/G-series over ENET/DoIP. ISO-TP multi-frame reassembly and Tester Present keep-alive handled for you.

📤

Walkthrough export

Machine-readable JSON export of a diagnostic session, with a dark-mode theme for shared snapshots. Hand a session to a mechanic that reads exactly.

⚖️

Open source

GPL-3.0. Tauri 2 + Rust core, vanilla-JS UI. Audit every byte of the protocol layer or contribute a community profile on GitHub.

See it in action

Real screenshots of BeeEmUu running against the built-in E90 simulator — vehicle scan, live data, logging, diagnostics, vehicle info, and the plugin catalog.

BeeEmUu vehicle test showing the DME fault memory with codes 2A82 and 30FF — Vehicle test — fault memory for the DME control unit

BeeEmUu live data view with real-time gauges and peak tracking — Live data — real-time gauges and peak tracking

BeeEmUu logging tab with trigger and math channel configuration — Logging — session triggers and math channels

BeeEmUu diagnostics tab with connection self-test and community data — Diagnostics — self-test, community data, and traffic log

Vehicle info — VIN, mileage, and suggested profile

BeeEmUu community plugins catalog with discover and import sections — Plugins — community catalog and import

Latest release

VersionLoading… Released— Downloads MSI · NSIS

What the community says

★★★★★

"Finally a free alternative to ISTA that actually reads my E90's fault memory without a subscription. The live gauges alone are worth it."

★★★★★

"The walkthrough JSON export is a game-changer. I hand a diagnostic session to my indie mechanic and they know exactly what to check."

★★★★☆

"Open source, no account, no telemetry. It's the tool I reach for before paying for a dealer scan."

Reviews are community-submitted. BeeEmUu is free and open source — share your experience.

Keep BeeEmUu free

BeeEmUu is 100% free, open source (GPL-3.0), with no paid tier, no account, and no telemetry. If it saves you a dealer scan, consider a one-time donation to keep development going.

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BMW diagnostics,on your terms.