Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Wiper and Washer System| DTC No. | Detection Item | DTC Detection Condition | Link |
|---|---|---|---|
| B1245 | Lost Communication with Wiper ECU LIN | When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and windshield wiper motor and link assembly (wiper ECU) is detected for 10 seconds or more | |
| B1278 | Lost Communication with Combination Switch ECU | When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and windshield wiper switch assembly is detected for 10 seconds or more. | |
| B1279 | Lost Communication with Humidity/Rain Sensor LIN | When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and rain sensor is detected for 10 seconds or more. | |
| B1370 | ECU Malfunction | When the battery voltage is 9.5 V or more, a malfunction is detected for 10 seconds or more during the wiper ECU self-check. | |
| B1372 | Wiper Switch Signal Mismatch between LIN and Line | When the battery voltage is 9.5 V or more, the operation signals sent via LIN communication and direct line do not match for 10 seconds or more. | |
| B1373 | Lost Communication with Wiper System LIN BUS | When the battery voltage is 9.5 V or more, a malfunction in the communication or LIN communication line between the main body ECU (multiplex network body ECU) and components of the wiper system occurs for 7 seconds or more 3 times consecutively. | |
| B1400 | Rain Sensor Malfunction |
| |
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa ...
Lost Communication with Wiper ECU LIN (B1245)
DESCRIPTION The main body ECU (multiplex network body ECU) and windshield wiper motor and link assembly communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DT ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Smart Access System With Push-button Start (for Start Function): Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Smart access system with push-button start (for Start Function) data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Panoramic View Monitor System: CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION If DTC U1000 is stored frequently, duplicate the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs. DTC No. Detection Item DTC Detection Condition Trouble Area U1000 CAN Communication Failure (Message Registry) ECU m ...
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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