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 | - |
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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
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Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. INSTALL FRONT DOOR OUTSIDE MOULDING SUB-ASSEMBLY LH (a) Attach the 3 claws to install the front door outside moulding sub-assembly LH. (b) In
Cooling System
DESCRIPTION The cause of the malfunction may be the cooling system. Check whether the grille is blocked, whether coolant is leaking, the HV radiator fan operating condition and whether coolant has frozen. Related Parts Check Area Inspection Step Grille blockage, coolant amount, coolant ho
