Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: 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
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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 | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
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| 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
| Result | Proceed to |
|---|---|
| DTC B1244 is not output. | A |
| DTC B1244 is output. | B |
| B | | GO TO DTC B1244 |
|
| 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 ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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