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)

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

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

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