Lexus NX: Horn System

Parts Location

PARTS LOCATION

ILLUSTRATION

*1

LOW PITCHED HORN ASSEMBLY

*2

HIGH PITCHED HORN ASSEMBLY

*3

HORN RELAY

*4

SPIRAL CABLE SUB-ASSEMBLY

*5

STEERING PAD SWITCH ASSEMBLY

*6

HORN BUTTON ASSEMBLY

*7

HORN FUSE

*8

NO. 2 ENGINE ROOM RELAY BLOCK

System Diagram

SYSTEM DIAGRAM

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.

Horn System

Symptom

Suspected Area

Link

Horn does not sound

HORN fuse

-

HORN relay

Low pitched horn assembly

High pitched horn assembly

Steering pad switch assembly

Spiral cable sub-assembly

Horn button assembly

Harness or connector

-

READ NEXT:

 Relay

On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT HORN RELAY ASSEMBLY (a) Remove the horn relay assembly. (b) Measure the resistance according to the value(s) in the tabl

 Lighting (ext)

 Afs (adaptive Front-lighting System)

SEE MORE:

 Adjustment

ADJUSTMENT PROCEDURE 1. STEERING OFF CENTER ADJUSTMENT HINT: This is the adjustment procedure for when the steering is off-center. (a) Check if the steering wheel is off-center. (1) Apply masking tape to the top center of the steering wheel and upper steering column cover. *1 Steer

 Cooling System

On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FOR COOLANT LEAK CAUTION: To avoid the danger of being burned, do not remove the radiator reservoir cap while the engine assembly and radiator assembly are still hot. Thermal expansion will cause hot engine coolant and steam to blow ou

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