Lexus ES manuals

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.

Symptom

Suspected Area

Link

Low or spongy pedal

Fluid leaks in brake system

-

Air in brake system

Front brake piston seals (worn or damaged)

Rear brake piston seals (worn or damaged)

Brake booster with master cylinder assembly (faulty)

Parking brake actuator O-ring

Brake drag

Brake pedal free play (insufficient)

Parking brake actuator

Front brake pad (cracked or distorted)

Rear brake pad (cracked or distorted)

Front brake piston (stuck)

Rear brake piston (stuck)

Front brake piston (seized)

Rear brake piston (seized)

Brake booster with master cylinder assembly (faulty)

Brake pull

Front brake piston (stuck)

Rear brake piston (stuck)

Front brake pad (oily)

Rear brake pad (oily)

Front brake piston (seized)

Rear brake piston (seized)

Front disc (scored)

Rear disc (scored)

Front brake pad (cracked or distorted)

Rear brake pad (cracked or distorted)

Hard pedal but brake inefficient

Front brake pad (worn)

Rear brake pad (worn)

Front brake pad (cracked or distorted)

Rear brake pad (cracked or distorted)

Front brake pad (oily)

Rear brake pad (oily)

Front brake pad (glazed)

Rear brake pad (glazed)

Front brake piston (stuck)

Rear brake piston (stuck)

Front brake piston (seized)

Rear brake piston (seized)

Front disc (scored)

Rear disc (scored)

Noise from brakes

Front brake pad (cracked or distorted)

Rear brake pad (cracked or distorted)

Front brake cylinder mounting bolt (loose)

Rear brake cylinder mounting bolt (loose)

Front disc (scored)

Rear disc (scored)

Front brake pad support plate (loose)

Rear brake pad support plate (loose)

Front disc brake cylinder slide pin (worn)

Rear disc brake cylinder slide pin (worn)

Front brake pad (dirty)

Rear brake pad (dirty)

Front brake pad (glazed)

Rear brake pad (glazed)

Front brake anti-squeal shim (damaged)

Rear brake anti-squeal shim (damaged)

READ NEXT:

 Brake Vacuum Hose (for Gasoline Model)

ComponentsCOMPONENTS ILLUSTRATION *1 FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY - - Tightening torque for "Major areas involving basic vehicle performance such as moving/turnin

 Vacuum Pump (for A25a-fks)

 Components

COMPONENTS ILLUSTRATION *1 ENGINE WIRE *2 NO. 1 VACUUM HOSE CONNECTOR *3 VACUUM PUMP ASSEMBLY *4 NO. 1 VACUUM PUMP O-RING Tightening torque for "Major areas involving basic

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 Check Bus 3 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 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 6 (CA3H) and 21 (CA

 Drive Motor "A" Temperature Sensor Circuit Short to Ground (P0A2A11,P0A2A15)

DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs are stored when the motor temperature sensor output is abnormal. The cause of this malfunction may be one of the following: Hybrid vehicle control ECU malfunction Hybrid vehicle control ECU internal malfunction Motor temperature sensor malfunctio

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