KINGBOLEN K8 Pro Bidirectional OBD2 Scan Tool

The KINGBOLEN K8 Pro is an 8-inch Android bidirectional scan tool built for shops and serious DIYers who are tired of annual software fees. Where most tools in this price range lock new vehicle coverage behind a $250-400/year renewal, the K8 Pro's updates are included for the life of the tool. It connects over Bluetooth (about 33 ft range) so you can read live data and run active tests from outside the vehicle instead of crouching over the OBD port.

For transmission work specifically, the K8 Pro covers TCM-level diagnostics: transmission adaptation reset, fuel trim learn, and bidirectional active tests that command solenoids and other modules directly so you can confirm a shift solenoid or TCC lockup circuit is actually responding before you pull a pan. It also covers the usual full-system list - ABS bleed, SAS, BMS reset, EPB, injector coding, crankshaft sensor relearn, and throttle reset - across PCM, ECM, BCM, TPMS and the rest of the module list on a given vehicle.

Hardware-wise it runs a quad-core MT8365 with 4 GB RAM and 64 GB storage on Android 10, with CAN FD and DoIP protocol support for newer platforms (CAN FD for GM 2019+, DoIP for 2017+ BMW F/G-chassis, Jaguar and Land Rover, and Volvo 2018+). The 12,600 mAh battery is rated for a full day of shop use on one charge. FCA AutoAuth login is supported for SGW-gated Chrysler/Dodge/Jeep/Alfa Romeo/Fiat vehicles, though the AutoAuth registration itself is purchased separately through FCA's site.