- Torque sensor (electric power steering column sub-assembly) malfunction
- Power steering motor assembly malfunction
- Power steering ECU assembly malfunction
Lexus NX: Fail-safe Chart
FAIL-SAFE CHART
If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system.
Power Steering System| Malfunction | Fail-safe Operation | Power steering warning light | Buzzer |
|---|---|---|---|
| | Power steering assist stops or assist amount is limited | Red or yellow | Sounds intermittently or once |
| Power steering assist is temporarily limited | Yellow | Sounds once |
HINT:
- If the power steering assist stops, the power steering warning light (red) comes on.
- If the amount of power assist is reduced, the power steering warning light (yellow) comes on and a vibration or sound may occur.
- The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or being driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal when the steering wheel is not turned for approximately 10 minutes with the power switch on (READY).
- If the auxiliary battery is not sufficiently charged or the voltage decreases temporarily, the amount of power assist will be reduced and the power steering warning light will come on. In such cases, the amount of power assist returns to normal when the auxiliary battery voltage recovers.
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Data List / Active Test
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DIAGNOSTIC TROUBLE CODE CHART Power Steering System DTC No. Detection Item Warning Indicate Return-to-normal Condition Link C1511 Torque Sensor1 On Power switch on (IG) again
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ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING EFFORT (TORQUE) CAUTION: These service operations may affect the SRS airbags. Be sure to read the precautionary notices concerning the SRS airbag syst
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Operation Check
OPERATION CHECK REMOTE TOUCH SELF CHECK NOTICE:
Before entering self-diagnostic mode, make sure there are no obstacles which may interfere with operation of the remote touch screen, and that the touch screen is not dirty.
Do not touch the touch screen except when required.
Since the remote to
Seat Heater for Rear Right Seat does not Operate
DESCRIPTION When the refreshing seat switch is operated, the air conditioning amplifier assembly receives the signal via the LIN communication line, and operates the seat heater for the corresponding rear seat. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
If the auxiliary battery voltage is l
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