How to check and replace the horn on Lexus RX330?

When working on these particular models (Highlander for 2005 and newer, Lexus for 2004 and newer), always verify and change fuses before starting your electrical test investigation. Pull the pad that connects the horn's electrical cable. Touch battery voltage to the horn terminal with a jumper wire to test the horn; if it doesn't work, replace it right away. When you depress the horn button, measure voltage at the terminal; replace the horn if you find voltage. Confirm the horn ground connection to the vehicle is properly attached and making contact. Start problem-solving by making sure power reaches the horn. When the relay tests good, check for power going to it in both control and power circuits. For each circuit without power, look carefully at the wires between the relay and the fuse box. Push the horn button with both relay circuits on and check from the relay to the button for electrical connection to ground; test this connection while looking for reasons why the circuit might not work (an open circuit) or find another issue if it works correctly. Press the horn button and see if it links to earth; if it does, look for a faulty connection between the relay and horn. You need to take out both horns from the location right in front of the windshield glass. Lift up the trim panel on the radiator support and unhook all the fasteners. Pull it away from the support and grille, and take it down. Unplug the connector to get rid of the horn connected to the fuse and relay box in front. After that, loosen the bracket bolt in the horn's mounting position. Before taking out the horns in front of the condenser, disconnect both their electrical connection and loosen the mounting bracket bolt. Unscrew the bracket bolt to take out the part, and putting it back in follows the path opposite to this removal.

Genuine Lexus RX330 Horn

Alarm Horn

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

9 Horns found

View related parts
Lexus RX330 Low Pitched Horn Assembly
Part Number: 86520-48030
$73.74 MSRP: $98.13
You Save: $24.39 (25%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Low Pitched
- Replaced by: 86520-AA010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, GSU35L-AWAGKA, MCU33L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX330 Low Pitched Horn Assembly
Part Number: 86520-AA010
$72.56 MSRP: $98.13
You Save: $25.57 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Low Pitched; Horn, Lower Note Horn
- Replaces: 86520-48030, 86520-33120
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, 3MZFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 High Pitched Horn Assembly
Part Number: 86510-48050
$73.74 MSRP: $98.13
You Save: $24.39 (25%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, High Pitched
- Replaced by: 86510-AA010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, GSU35L-AWAGKA, MCU33L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX330 High Pitched Horn Assembly
Part Number: 86510-AA010
$72.56 MSRP: $98.13
You Save: $25.57 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, High Pitched; High Note Horn, Horn
- Replaces: 86510-33190, 86510-48050
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, 3MZFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 Low Pitched Horn Assembly
Part Number: 86520-48040
$64.16 MSRP: $82.09
You Save: $17.93 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Low Pitched
- Manufacturer Note: KOREA SPEC
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU35L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX330 Horn Assy, Super Low Pitched
Part Number: 86540-48010
$61.75 MSRP: $83.50
You Save: $21.75 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn
- Manufacturer Note: KOREA SPEC
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU35L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX330 Security Horn Assembly
Part Number: 86510-0E011
$80.18 MSRP: $108.43
You Save: $28.25 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Security; Alarm Horn, Horn
- Replaces: 86510-48060, 86510-0E010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 2GRFE; GSU30L-CWAGKA, 3MZFE; GSU30L-AWAGKA, 3MZFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 Security Horn Assembly
Part Number: 86510-0E010
$81.49 MSRP: $108.43
You Save: $26.94 (25%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Security
- Replaced by: 86510-0E011
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-CWAGKA, GSU35L-CWAGKA, MCU33L-CWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 Security Horn Assembly
Part Number: 86510-48060
$81.49 MSRP: $108.43
You Save: $26.94 (25%)
ADD TO CART
Product Specifications
- Other Name: Horn Assy, Security
- Replaced by: 86510-0E011
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, GSU35L-AWAGKA, MCU33L-AWAGKA, MCU38L-AWAGKA

Lexus RX330 Horn

The Lexus RX330 Horn is the vehicle's critical voice, which allows drivers to instantly make themselves known and prevent collisions. Mounted up front, the Horn is activated when the driver presses the steering wheel pad and sends power to an internal diaphragm that vibrates a metal plate and emits either the classic honk heard on older models or the sharper beep favored on recent editions. Both of the Horn sound styles are designed to attract attention, but the brisk beep dissipates quicker in city traffic, while the deeper honk carries farther on open roads, giving the owners two acoustic textures across the Lexus RX330 timeline. Regulations in many areas require that every road car be equipped with a working Horn, and therefore it is crucial to keep the unit in working condition. Replacing the worn one with a new one, while it might be simple, generally involves modest parts costs along with additional labor charges beyond the price of the component. Regular inspection ensures the Lexus RX330 Horn is always loud and responsive, and since the device is small but mighty, every Lexus RX330 relies on its Horn for everyday safety.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX330 Horn available on LexusPartsNow.com. Our OEM Lexus RX330 Horn come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!

Lexus RX330 Horn Parts Questions & Experts Answers

Low Pitched Horn Assembly
86520-48030
Q: How to check and replace the horn on Lexus RX330?
A:
When working on these particular models (Highlander for 2005 and newer, Lexus for 2004 and newer), always verify and change fuses before starting your electrical test investigation. Pull the pad that connects the horn's electrical cable. Touch battery voltage to the horn terminal with a jumper wire to test the horn; if it doesn't work, replace it right away. When you depress the horn button, measure voltage at the terminal; replace the horn if you find voltage. Confirm the horn ground connection to the vehicle is properly attached and making contact. Start problem-solving by making sure power reaches the horn. When the Relay tests good, check for power going to it in both control and power circuits. For each circuit without power, look carefully at the wires between the relay and the fuse box. Push the horn button with both relay circuits on and check from the relay to the button for electrical connection to ground; test this connection while looking for reasons why the circuit might not work (an open circuit) or find another issue if it works correctly. Press the horn button and see if it links to earth; if it does, look for a faulty connection between the relay and horn. You need to take out both horns from the location right in front of the windshield glass. Lift up the trim panel on the radiator support and unhook all the fasteners. Pull it away from the support and grille, and take it down. Unplug the connector to get rid of the horn connected to the fuse and relay box in front. After that, loosen the bracket bolt in the horn's mounting position. Before taking out the horns in front of the condenser, disconnect both their electrical connection and loosen the mounting bracket bolt. Unscrew the bracket bolt to take out the part, and putting it back in follows the path opposite to this removal.

Related Lexus RX330 Parts

Browse by Year

2006 Horn 2005 Horn 2004 Horn