Lexus NX: Noise Occurs
PROCEDURE
| 1. | CHECK NOISE CONDITION |
(a) Check from which direction the noise comes (front left or right, or rear left or right).
OK:
The location of the noise source can be determined.
| NG | .gif) | GO TO STEP 3 |
|
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| 2. | CHECK SPEAKERS |
(a) Check the installation condition of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation or other failures.
| Result | Proceed to |
|---|---|
| No malfunction is found. | A |
| A speaker is installed incorrectly. | B |
| Foreign matter is in a speaker. | C |
| A speaker cone paper is broken. | D |
| B | | REINSTALL SPEAKER |
| C | | REMOVE FOREIGN MATTER |
| D | | REPLACE SPEAKER |
|
| 3. | CHECK NOISE CONDITIONS |
(a) Check the noise condition.
HINT:
The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.
| Condition under which Noise Occurs | Noise Source |
|---|---|
| Noise occurs during A/C or heater operation. | Blower motor |
| Noise occurs during window defogger operation. | Back door glass (window defogger) |
| Noise occurs when the horn switch is pressed and released or when pressed and held. | Horn |
| Noise occurs synchronously with the turn signal blinking pattern. | Flasher |
| Noise occurs during window washer operation. | Washer |
| Noise occurs during wiper operation. | Wiper |
| Noise occurs when the brake pedal is depressed. | Stop light switch |
| Others | Static electricity |
HINT:
- In the left column of the table, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the respective noise filter.
- To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
- Troubleshoot noises in descending order of loudness.
- Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.
| Result | Proceed to |
|---|---|
| The noise source cannot be determined. | A |
| The noise source can be determined. | B |
| A | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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| B | | REPAIR OR REPLACE NOISE SOURCE |
READ NEXT:
No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal
Sound Quality is Bad Only when Disc is Played (Volume is Too Low)
CAUTION / NOTICE / HINT NOTICE: When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following
Disc cannot be Inserted or is Ejected Right After Insertion
CAUTION / NOTICE / HINT NOTICE: When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following
SEE MORE:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Seat Heater System DTC No. Detection Item Link B14C0 Front Right Seat Heat Sensor Circuit B14C1 Front Left Seat Heat Sensor Circuit B14C2 Rear Right Seat Heat Sensor Circuit B14C3 Rear Left Seat Heat Sensor Circuit
Short to +B in Outer Mirror Indicator(Slave) (C1AB1)
DESCRIPTION This DTC is stored when the blind spot monitor sensor RH detects a +B short in the outer rear view mirror indicator RH. DTC No. Detection Item DTC Detection Condition Trouble Area Note C1AB1 Short to +B in Outer Mirror Indicator(Slave) Both of the following conditions
