LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2024 >> LX 600 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Adaptive High Beam System - Diagnostic Codes & Circuit Tests >> Adaptive High Beam System >> DTC U0182-87: Lost Communication with Lighting Control Module Front Missing Message; DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" [12/2021 - ] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U0182-87: Lost Communication with Lighting Control Module Front Missing Message; DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" [12/2021 - ]: Description

The forward recognition camera communicates with the headlight ECU sub-assembly LH via CAN communication. If communication between the forward recognition camera and headlight ECU sub-assembly LH stops, the forward recognition camera will store this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
U0182-87 Lost Communication with Lighting Control Module Front Missing Message Detection condition: 
  1. The ignition switch is ON.

Malfunction status: 

  1. A communication malfunction with the headlight ECU Sub-assembly LH is detected

Malfunction duration: 

  1. 5 seconds or more
  • Pre-collision system
  • Headlight ECU sub-assembly LH
  • Harness or connector
 Front Recognition Camera (Front Lighting Control) A
U0235-87 Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message Detection condition: 
  1. Ignition switch ON

Malfunction status: 

  1. A communication malfunction with the millimeter wave radar sensor assembly is detected

Malfunction duration: 

  1. 5 seconds or more
  • Pre-collision system
  • Harness or connector
  • Headlight ECU sub-assembly LH
 Front Recognition Camera (Front Lighting Control) A
U023A-87 Lost Communication with Image Processing Module "A" Detection condition: 
  1. Ignition switch ON

Malfunction status: 

  1. A communication malfunction with the forward recognition camera is detected

Malfunction duration: 

  1. 10 seconds or more
  • Pre-collision system
  • Harness or connector
  • Headlight ECU sub-assembly LH
 Headlight Control A
PATTERN 1

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Pre-Collision System Lane Control Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
◦ ◦ ◦ ◦ ◦ ◦ ◦ Harness or connector (Open or short)
Headlight ECU sub-assembly LH (Internal malfunction)
Millimeter wave radar sensor assembly (Internal malfunction)
Forward recognition camera (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

PATTERN 2

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Pre-Collision System Lane Control Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
◦ ◦ ◦ ◦ ◦ - - Forward recognition camera (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

PATTERN 3

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Pre-Collision System Lane Control Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
- ◦ ◦ ◦ ◦ ◦ - Harness or connector (Open)
Millimeter wave radar sensor assembly (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

PATTERN 4

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Pre-Collision System Lane Control Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
- ◦ ◦ ◦ ◦ - - Millimeter wave radar sensor assembly (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

PATTERN 5

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Pre-Collision System Lane Control Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
◦ - - - - - ◦ Harness or connector (Open)
Headlight ECU sub-assembly LH (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

PATTERN 6

DTC Output Part Name
(Display on GTS)		 Suspected Area (Malfunction Status)
Forward Recognition Camera Millimeter Wave Radar Sensor Assembly Headlight ECU Sub-assembly LH
Forward Recognition Camera (Front Lighting Control) Lane Control Pre-Collision System Radar Cruise 2 Front Radar Sensor Headlight Control
U0182-87 U0235-87 U0235-87 U0235-87 U0235-87 U0104-87 U023A-87
- - - - - - ◦ Headlight ECU sub-assembly LH (Internal malfunction)

◦: DTC is output.

-: DTC is not output.

HINT: 

If the DTCs are output simultaneously, the inspection area can be narrowed down.

scientia non olet · About LEMON Manuals