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 | See page |
|---|---|---|
| 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) | |
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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.
SEE MORE:
Operation Check
OPERATION CHECK CHECK SEAT HEATER (for Front) (a) Turn the power switch on (IG). (b) Check that the indicator illuminates and the surface of the front seat warms up, when the seat heater switch on the air conditioning control assembly is turned on. (c) Check that the front seat surface temperature c
Center Airbag Sensor Assembly Communication Circuit Malfunction (B1790)
DESCRIPTION The airbag ECU assembly communication circuit consists of the occupant detection ECU and airbag ECU assembly. DTC B1790 is stored when a malfunction is detected in the airbag ECU assembly communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area B179
