Lexus ES: Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE FUNCTION
(a) When a malfunction occurs in the lane control system, a message will be displayed on the multi-information display and, depending on the malfunction, functions of the lane control system will be disabled.
| Warning Message | Cause | Fail-safe Operation | Conditions to Return to Normal Condition | |||
|---|---|---|---|---|---|---|
| Lane Departure Alert Function | Steering Assist Function | Lane Centering Function | Vehicle Sway Warning Function | |||
| X: Control is suspended | ||||||
| LTA Malfunction Visit Your Dealer | Lane control system is malfunctioning HINT: Click here | X | X | X | X | After system returns to normal, power switch is turned off and then to on (IG) or LTA main switch is turned off and then to on. |
| Front Camera Unavailable | Forward recognition camera temperature out of operating range | X | X | X | X | Forward recognition camera temperature returns to normal |
| Abnormal forward recognition camera voltage | X | X | X | X | Forward recognition camera voltage returns to normal | |
| Forward recognition camera is temporarily unavailable (forward recognition camera recognition stopped) | X | X | X | X | The conditions which prevent the forward recognition camera from performing recognition return to normal. | |
| Front Camera Unavailable See Owner's Manual |
| X | X | X | X | Forward recognition camera or area of windshield glass in front of forward recognition camera is cleaned |
| LTA Unavailable | Sensor other than forward recognition camera sensor is temporarily unavailable HINT: Click here | X | X | X | X | Temporarily unavailable sensor becomes available |
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Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a lane control system DTC is stored, the forward recognition camera stores the current vehicle state as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connec
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
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Lane Control System DTC No. Detection Item Link C1A7496 Steering Vibrator Component Internal Failure U012587 Lost Communication with Multi-axis Ac
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Terminals Of Ecu
TERMINALS OF ECU CHECK SWING GRILLE ACTUATOR ASSEMBLY (a) Disconnect the z23 swing grille actuator assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Co
Invalid Data Received from Hybrid Powertrain Control Module Invalid Serial Data Received (U059481)
DESCRIPTION If the hybrid vehicle control ECU cannot recognize the forward recognition camera. DTC U059481 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from U059481 Invalid Data Received from Hybrid Powertrain Control Module Invalid Serial
