What is the knock control system and how do you check and replace a knock sensor on Lexus ES300?

The knock control system is designed to reduce spark knock by detecting abnormal engine vibration through a knock sensor, which produces a voltage output that is monitored by the PCM. The system retards ignition timing until the detonation ceases, allowing for optimal spark advance and improved driveability. To check a knock sensor, disconnect the electrical connector and use an ohmmeter to check for continuity between the knock sensor terminal and the body of the sensor. If continuity exists, replace the sensor. To replace the knock sensor, disconnect the battery cable, drain the cooling system, remove the intake manifold on V6 models, disconnect the electrical connector, and remove the sensor. When installing a new or reused sensor, ensure it is securely tightened (approximately 30 ft-lbs) and the threads are coated with thread sealant as necessary. Refill the cooling system and check for leaks.

Genuine Lexus ES300 Knock Sensor

Engine Knock Sensor

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5 Knock Sensors found

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Lexus ES300 Knock Control Sensor
Part Number: 89615-12090
$147.73 MSRP: $201.42
You Save: $53.69 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Knock Control; Knock Sensor
- Replaces: 89615-12050, 89615-32010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1999-2003 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-BTPGKA, MCV20L-BTPGKK, MCV30L-BEAGKA
- 1993-1994 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV10L-BTPGKA, MCV10L-BTPGKK
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Lexus ES300 Knock Control Sensor
Part Number: 89615-20090
$144.50 MSRP: $195.41
You Save: $50.91 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Knock Control
- Manufacturer Note: (J)
- Replaced by: 89615-06010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2003 Lexus ES300 | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCV31L-BEAGKA
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Lexus ES300 Knock Control Sensor
Part Number: 89615-12040
$178.84 MSRP: $243.83
You Save: $64.99 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control; Knock Sensor
- Manufacturer Note: MATSUSHITA
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1993-2000 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV10L-BTPGKA, MCV10L-BTPGKK, MCV20L-BTPGKA, MCV20L-BTPGKK
View related parts
Lexus ES300 Knock Control Sensor
Part Number: 89615-12050
$147.73 MSRP: $201.42
You Save: $53.69 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Replaced by: 89615-12090
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1993-1994 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV10L-BTPGKA, MCV10L-BTPGKK
View related parts
Lexus ES300 Knock Control Sensor
Part Number: 89615-33020
$149.31 MSRP: $201.92
You Save: $52.61 (27%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Manufacturer Note: NIPPONSDENSO
- Replaced by: 89615-32030
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1992-1994 Lexus ES300 | 6 Cyl 3.0L | 3VZFE; 3VZFE; VCV10L-BTMGKA, VCV10L-BTMGKK, VCV10L-BTPGKA, VCV10L-BTPGKK

Lexus ES300 Knock Sensor

Lexus Knock Sensor ES300 is one of the essential car parts that demonstrate the company's ideology of reliability and power. This advanced Knock Sensor is relied upon for sensing knock in the engine and relaying definite signals to the powertrain control module in order to make a change in ignition time. As a piezoelectric transducer the Lexus ES300 Knock Sensor transforms mechanical vibrations, pressure pulses for real time measurement of pressure spikes of knock. This capability is useful in ensuring the prime performance of the vehicle's engine especially when using low octane fuels and greatly improves the efficiency and safety of Lexus ES300. Specifically designed to fit different models of ES300, the Knock Sensor helps to maximize the car's performance depending on the environment in which the car is used. Interestingly, latest models of knock sensor for Lexus ES300; can vary the time which it takes to activate a particular cylinder and also control the boost pressure, making the vehicle more efficient and durable. The Knock Sensor is employed in the Lexus ES300, which belongs to the famous ES series, that is famous for its luxurious comfort and outstanding quality of the ride. Being able to reduce the amount of engine damage and enhance gasoline efficiency the Lexus ES300 Knock Sensor can be seen as a triumph in the automotive industry proving the brand's commitment to excellence. In light of these details therefore it is very clear that the Lexus ES300 Knock Sensor is one of the hall marks that reveals the legend of the company in delivering reliable and quality automobiles that are safe for the rider while at the same time meeting their desired satisfaction.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus ES300 Knock Sensor available on LexusPartsNow.com. Our OEM Lexus ES300 Knock Sensor 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 ES300 Knock Sensor Parts Questions & Experts Answers

Knock Control Sensor
89615-12040
Q: What is the knock control system and how do you check and replace a knock sensor on Lexus ES300?
A: The knock control system is designed to reduce spark knock by detecting abnormal engine vibration through a knock sensor, which produces a voltage output that is monitored by the PCM. The system retards ignition timing until the detonation ceases, allowing for optimal spark advance and improved driveability. To check a knock sensor, disconnect the electrical connector and use an ohmmeter to check for continuity between the knock sensor terminal and the body of the sensor. If continuity exists, replace the sensor. To replace the knock sensor, disconnect the battery cable, drain the cooling system, remove the intake manifold on V6 models, disconnect the electrical connector, and remove the sensor. When installing a new or reused sensor, ensure it is securely tightened (approximately 30 ft-lbs) and the threads are coated with thread sealant as necessary. Refill the cooling system and check for leaks.