Autel MaxiCOM MK900BT Bidirectional Scan Tool

The MK900BT is Autel's Bluetooth-connected bidirectional scan tool: an 8-inch 1280x800 Android 11 tablet paired with a separate MaxiVCI V150 dongle that plugs into the OBD2 port and talks to the tablet wirelessly out to about 33 feet, so you aren't stuck leaning into the dash while you work a live-data test. It reads and clears codes on every module on the car, not just the engine, and supports the newer CAN FD and DoIP protocols that late-model GM (2019+), Volvo (2018+), Jaguar/Land Rover (2017+) and BMW F/G-chassis vehicles need for the gateway module to respond to a scan tool at all.

For transmission diagnostic work specifically, the bidirectional active-test list runs 3,000-plus commands, which covers transmission/gearbox adaptation resets and TCM-side actuator commands on supported platforms, plus live data streaming so you can watch line pressure, shift solenoid duty cycle and gear-ratio data while the vehicle is on a lift or on a test drive. It also runs 40-plus service functions - oil reset, ABS bleed, SAS calibration, injector coding, throttle reset, battery registration - across 150-plus makes back to 1996, plus FCA and Renault SGW gateway access for late Chrysler/Dodge/Jeep/Ram and Renault vehicles.

AutoVIN and Scan License auto-identify the vehicle so you aren't typing in VIN data by hand, and one-click WiFi printing produces a pre/post-repair comparison report you can hand a customer. The tablet carries a 7,700 mAh battery and 4+64GB storage, noticeably more than the 5,000 mAh/lower-res screen on the older MK808S tier. As with other Autel units, the first year of software updates is included; after that the tool keeps working on its existing vehicle library without a subscription, though new-model coverage requires renewing it.