2017 Lexus LX 570FACTORY OEM SERVICE PROCEDURE

Can Communication System

CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Description
B1003 ECU Malfunction
U0141 Lost Communication with Body Control Module "A"
U0199 Lost Communication with "Door Control Module A"
U0200 Lost Communication with "Door Control Module B"
U0208 Lost Communication with "Seat Control Module A"
U0230 Lost Communication with Rear Gate Module
U0235 Lost Communication with Cruise Control Front Distance Range Sensor
U023A Lost Communication with Front Camera Module
Lost Communication with Gateway Module (Main Body)
Lost Communication with Gateway Module (Sensor Bus)
U1115 Lost Communication with Tilt and Telescopic Module
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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