Lexus NX: 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.

Brake System

Symptom

Suspected Area

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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)

Brake drag

Brake pedal free play (Insufficient)

Brake pedal stroke sensor (Adjustment)

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 brake disc (Scored)

Rear brake disc (Scored)

Front brake pad (Cracked or distorted)

Rear brake pad (Cracked or distorted)

Hard pedal but brake inefficient

Fluid leaks in brake system

-

Air in brake system

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 disc (Scored)

Rear brake disc (Scored)

Noise from brakes

Front brake pad (Cracked or distorted)

Rear brake pad (Cracked or distorted)

Front brake installation bolt (Loose)

Rear brake installation bolt (Loose)

Front brake disc (Scored)

Rear brake 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:

 On-vehicle Inspection

ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT NOTICE: DTCs may be stored during the inspection procedure. Be sure to clear the DTCs and check that no DTCs are output after the inspection is finished.

 Parking Brake

 Electric Parking Brake Actuator

SEE MORE:

 Transmission Control Switch Circuit

DESCRIPTION When the shift lever is in S, different ranges can be chosen using the floor shift sequential gate. WIRING DIAGRAM PROCEDURE 1. READ VALUE USING TECHSTREAM (SPORTS MODE) (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Enter the following menus: Po

 Mass Air Flow Circuit Low (P0102,P0103)

DESCRIPTION The mass air flow meter sub-assembly is a sensor that measures the amount of air flowing through the throttle valve. The ECM uses this information to determine the fuel injection duration and to provide an appropriate air fuel ratio. Inside the mass air flow meter sub-assembly, there is

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