Lexus ES manuals

Lexus ES: Software Incompatibility with Cruise Control Module Invalid/Incompatible Software Component (U030557)

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / Cruise Control / Front Radar Sensor System (for Gasoline Model) / Software Incompatibility with Cruise Control Module Invalid/Incompatible Software Component (U030557)

DESCRIPTION

The millimeter wave radar sensor assembly receives vehicle information from the forward recognition camera via CAN communication.

If the vehicle information stored in the forward recognition camera differs from that stored in the millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U030557

Software Incompatibility with Cruise Control Module Invalid/Incompatible Software Component

When the engine switch is on (IG), the vehicle information stored in the millimeter wave radar sensor assembly differs from that received from the forward recognition camera
  • Millimeter wave radar sensor assembly
  • Forward recognition camera

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
  • When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the millimeter wave radar sensor beam axis must be performed.

    Click here

  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
  • If the forward recognition camera has been replaced with a new one, forward recognition camera adjustment must be performed.

    HINT:

    Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition.

    One Time Recognition: Click here

    Sequential Recognition: Click here

PROCEDURE

1.

CHECK FOR DTCs

(a) Check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

DTC U030557 (Front Radar Sensor) and U032257 (Front Recognition Camera) are output

A

Only DTC U030557 (Front Rader Sensor) is output

B
A

REPLACE FORWARD RECOGNITION CAMERA

B

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

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 Parts Location

PARTS LOCATION ILLUSTRATION *1 MILLIMETER WAVE RADAR SENSOR ASSEMBLY *2 FORWARD RECOGNITION CAMERA *3 HEADLIGHT ECU SUB-ASSEMBLY LH - - ILLUSTRATION *1 DLC3 *2 INSTRUM

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