Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Lexus LS 460 Base, RWDFACTORY OEM SERVICE PROCEDURE
Electronically Controlled Brake System
ABS DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
VSC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
ABS AND ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Detection Item | Refer To |
|---|---|---|
| C1241/41 | Low Battery Positive Voltage | Refer to DTC C1241/41: Low Battery Positive Voltage; DTC C1242/42: Open in IG1 / IG2 Power Source Circuit [09/2015 - ] |
BRAKE HOLD DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Detection Item | Refer To |
|---|---|---|
| C13AF/11 | Electric Parking Brake System Malfunction | Refer to DTC C13AF/11: Electric Parking Brake System Malfunction [09/2015 - ] |
| U0128/13 | Lost Communication with Park Brake Control Module | Refer to DTC U0073/94: Control Module Communication Bus OFF; DTC U0100/65: Lost Communication with ECM / PCM; DTC U0123/62: Lost Communication with Yaw Rate Sensor Module; DTC U0124/95: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126/63: Lost Communication with Steering Angle Sensor Module; DTC U0128/13: Lost Communication with Park Brake Control Module; DTC U0130/68: Lost Communication with Steering Effort Control Module; DTC U0182: Lost Communication with AFS ECU [09/2015 - ] |
TEST MODE OF ABS DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
TEST MODE OF ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Detection Item | Refer To |
|---|---|---|
| C1346/71 | Stroke Sensor Zero Point Learning Malfunction (Test Mode DTC) | Refer to DTC C1247/47: Stroke Sensor Malfunction; DTC C1346/71: Stroke Sensor Zero Point Learning Malfunction (Test Mode DTC); DTC C1392/48: Stroke Sensor Zero Point Calibration Undone [09/2015 - ] |
TEST MODE OF VSC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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