Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Meter Illumination is Always Dark

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Meter Illumination is Always Dark

DESCRIPTION

The combination meter assembly receives signals from this circuit to adjust the illumination of the combination meter assembly. The combination meter assembly sets the illumination level based on the user operation of the light control rheostat switch.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Click here

HINT:

  • The meter illumination dims when the taillights are turned on.
  • Setting the meter illumination level to maximum brightness cancels the above dimming of the meter illumination.
  • Setting the meter illumination level to minimum brightness turns off the meter illumination.
  • The automatic light control sensor sensitivity can be customized.

    w/ Automatic Headlight Beam Level Control System: Click here

    w/o Automatic Headlight Beam Level Control System: Click here

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

Click here

Result

Proceed to

CAN communication DTCs are not output.

A

CAN communication DTCs are output.

B
B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK FOR DTC

(a) Check if lighting system DTCs are output.

w/ Automatic Headlight Beam Level Control System: Click here

w/o Automatic Headlight Beam Level Control System: Click here

Body Electrical > Main Body > Trouble Codes

Result

Proceed to

DTC B1244 is not output.

A

DTC B1244 is output.

B
B

GO TO DTC B1244

A

3.

REPLACE COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly with a new one.

Click here

OK:

The operation of the combination meter assembly returns to normal.

OK

END
NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Operating Light Control Rheostat does not Change Light Brightness
    DESCRIPTION The combination meter assembly receives signals from this circuit to adjust the illumination of the combination meter assembly. The combination meter assembly sets the illumination level b ...

    Meter Illumination does not Dim at Night
    DESCRIPTION In this circuit, the combination meter assembly receives auto dimmer signals from the main body ECU (multiplex network body ECU) via CAN communication. When the combination meter assembly ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Occupant Classification System: Trouble in Passenger Airbag ON/OFF Indicator
    DESCRIPTION The occupant classification system detects the front passenger seat condition. It then displays the instrument panel passenger airbag assembly and front seat cushion airbag assembly RH condition (activated/not activated) using the passenger airbag ON/OFF indicator. HINT: Approximately 6 ...

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Front Drive Shaft Assembly: Installation
    INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL FRONT DRIVE SHAFT HOLE SNAP RING (for LH Side) (a) Install a new front drive shaft hole snap ring. NOTICE: Face the end gap of the f ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2026 Copyright www.lexusrx.net
    0.0108