Launch X-431 Creader Professional 919 MAX Diagnostic Tool

Power On the Device

• Make sure the tool’s internal battery is charged.

• Press and hold the Power / ON button for a few seconds until the screen lights up. This powers on the Android‑based tablet interface built into the unit.

 2. Connect to the Vehicle

• Locate the vehicle’s OBD‑II diagnostic port, usually under the driver’s side dashboard.

• Plug the tool’s main diagnostic cable (DB15/OBD connector) into that port.

• Turn the vehicle’s ignition to ON (engine running or key in ON position so electronics are active).

  After Diagnostics

  • Turn off the ignition, unplug the diagnostic cable from the vehicle, then power off the device by holding the Power button again.