Lexus ES: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Heated Steering Wheel System| Symptom | Suspected Area | Link |
|---|---|---|
| Steering wheel does not heat up when heated steering wheel switch is pressed | Navigation system | |
| Steering Wheel Heater Switch (Refreshing Seat Switch) | | |
| Refer to "Steering wheel does not heat up when heated steering wheel switch is pressed" | | |
| Automatic steering wheel heater does not turn on | Check automatic steering wheel heater settings | - |
| Navigation system | | |
| Air Conditioning Amplifier Assembly | | |
| Steering Wheel Heater Switch (Refreshing Seat Switch) | |
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Terminals Of Ecu
TERMINALS OF ECU HEATED STEERING WHEEL CONTROLLER (STEERING VIBRATION ECU) (a) Measure the voltage or resistance according to the value(s) in the table below. HINT: Perform the inspection from the ha
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Air Conditioner / Tr
Fail-safe Chart
FAIL-SAFE CHART DIAGNOSIS FUNCTION
Heated steering wheel controller (steering vibration ECU) has diagnosis function. Condition Detection Condition Response when malfunction detected Recove
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RR Speed Sensor Wrong Installation (X0454)
DESCRIPTION Code Tester Display Measurement Item Trouble Area X0454 RR Speed Sensor Wrong Installation History of rear speed sensor RH being installed incorrectly Rear Speed Sensor RH PROCEDURE 1. CHECK FOR DTCs (HEALTH CHECK) (a) Perform the Health Check using the Tec
Check Bus 1 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 23 (CA1H) and 8 (CA
