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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Electric parking brake does not operate. | Proceed to "Electric Parking Brake does not Operate" | |
| Parking brake indicator light (red) does not illuminate or turn off when parking brake is manually locked and released | Proceed to "Electric Parking Brake does not Operate" | |
| Electric parking brake AUTO function does not operate (shift-linked parking brake does not lock or release) | Proceed to "Electric Parking Brake AUTO Function Circuit" | |
| AUTO indicator light does not change (does not illuminate or turn off) when mode switching (AUTO or manual) is performed | Proceed to "Electric Parking Brake AUTO Indicator Light Circuit" | |
| Electric parking brake switch indicator light on electric parking brake switch (integration control and panel assembly) does not illuminate or turn off when lock and release operations are performed | Electric parking brake switch indicator light power source system HINT: When a malfunction occurs, the AUTO indicator light also does not illuminate or turn off. | |
| Parking brake ECU assembly POL terminal circuit | | |
| Wire harness or connector (electric parking brake switch (integration control and panel assembly) - parking brake ECU assembly) | - | |
| Electric parking brake switch (Integration control and panel assembly) | | |
| Parking brake ECU assembly | |
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READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC AND FREEZE FRAME DATA (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG) and the Techstream on. (d) Enter the followin
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA HINT:
If a DTC is output, the freeze frame data is recorded when the DTC occurs.
If freeze frame data is recorded when a DTC occurs, the freeze frame data is n
Fail-safe Chart
FAIL-SAFE CHART DTC Trouble Area Brake Warning Light / Yellow (Minor Malfunction) Parking Brake Indicator Light (Red) Fail-safe Deactivation Condition C1245 Deceleration sensor data m
SEE MORE:
Thermostat (P0128)
DESCRIPTION This DTC is stored when the engine coolant temperature does not reach 73°C (163°F) despite sufficient engine warm-up time having elapsed. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory P0128 Thermostat All of the following conditions are met
Inspection
INSPECTION PROCEDURE 1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH (a) Check the operation of the lumbar support adjuster assembly LH. (1) Apply auxiliary battery voltage to the lumbar support adjuster assembly LH connector, and check that the lumbar support adjuster assembly LH operates smoothl
