Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Height Sensor Initialization Incomplete (B2450)
DESCRIPTION
The No. 1 headlight ECU sub-assembly LH stores this DTC if initialization has not been performed after it was replaced.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| B2450 | Height Sensor Initialization Incomplete |
| No. 1 headlight ECU sub-assembly LH | AFS |
CAUTION / NOTICE / HINT
NOTICE:
-
If the No. 1 headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.
Click here
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-
If the headlight assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.*
Click here
- When replacing the No. 1 headlight ECU sub-assembly LH, always replace it with a new one. If a No. 1 headlight ECU sub-assembly LH 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.
-
When replacing the headlight assembly LH, always replace it with a new one. If a headlight assembly LH 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.*
- *: for TMMC Made
PROCEDURE
| 1. | INITIALIZATION NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
(a) Perform initialization of the No. 1 headlight ECU sub-assembly LH.
Click here
|
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| 2. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > AFS > Clear DTCs
|
| 3. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS / Trouble Codes.
(e) Check for DTCs.
Body Electrical > AFS > Trouble CodesOK:
DTC B2450 is not output.
HINT:
If the No. 1 headlight ECU sub-assembly LH stores DTC B2450 even though the ECU has been initialized, there may be a malfunction in the No. 1 headlight ECU sub-assembly LH.
| OK | .gif) | END (INITIALIZATION WAS NOT COMPLETED) |
| NG | | REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
Headlight LH Circuit (B2439,B243A)
DESCRIPTION The No. 1 headlight ECU sub-assembly LH and No. 1 headlight ECU sub-assembly RH internally boost the power supply voltage to ensure a constant supplied current for the lo/hi beam LED of th ...
Variation Code not Written (B2451)
DESCRIPTION The No. 1 headlight ECU sub-assembly LH stores this DTC if the vehicle specifications have not been stored. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Outpu ...
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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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