Lexus ES manuals

Lexus ES: Fail-safe Chart

FAIL-SAFE CHART

DTC

Trouble Area

Brake System Warning Light (Yellow)

Parking Brake Indicator Light (Red)

Fail-safe Deactivation Condition

C1245

Deceleration sensor data malfunction

Illuminates

Normal

20 seconds after power switch turned off

C13A0

Open in power supply relay circuit

Illuminates

Normal*

20 seconds after power switch turned off

C13A1

Short in power supply relay circuit

Illuminates

Normal

20 seconds after power switch turned off

C13A2

Power switch malfunction

Illuminates

Normal

20 seconds after power switch turned off

C13A5

Parking brake motor (Parking brake actuator assembly) current monitor malfunction

Illuminates

Normal*

20 seconds after power switch turned off

C13A6

Parking brake motor (Parking brake actuator assembly) open or short malfunction

Illuminates

Normal*

20 seconds after power switch turned off

C13A7

Parking brake actuator assembly malfunction (jamming, spinning, repeated slipping)

Illuminates

Normal*

Parking brake actuator assembly normal

C13A9

Brake Control System Malfunction

Illuminates

Normal

Electronically controlled brake system returns to normal (All of the following conditions are met)
  • A vehicle speed signal is correctly received from 1 or more wheels.
  • No signals indicating an electronically controlled brake system malfunction are received.
  • When the parking brake ECU (brake actuator assembly) is not outputting a parking brake operation request signal, there is no parking brake operation signal from the skid control ECU (brake booster with master cylinder assembly).

C13AA

Electric parking brake high temperature

Does not illuminate

Blinks

Wait 1 minute

C13AE

System information not received malfunction

Illuminates

Normal

System information received

C13B0

ECU malfunction

Illuminates

Normal*

Parking brake ECU (brake actuator assembly) normal

C13B4

Electric parking brake switch open or short circuit malfunction

Illuminates

Blinks

After returning to normal condition, turn power switch again

U0073

CAN communication system malfunction

Illuminates

Normal

Power switch off

U0100

SFI system communication malfunction

Illuminates

Normal

Communication normal, power switch off

U0124

Deceleration sensor communication malfunction

Illuminates

Normal

Communication normal, power switch off

U0129

Brake system communication malfunction

Illuminates

Normal

Communication normal, power switch off

U0293

Hybrid vehicle control ECU communication malfunction

Illuminates

Normal

Communication normal, power switch off

  • *: The parking brake indicator light blinks (red) if the electric parking brake switch assembly is pulled or pushed.

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