How to disconnect, remove, and replace the Knock Sensor on Lexus RX350?

For four-cylinder models, the knock sensor is on the engine block's backside, requiring intake manifold removal. Disconnect the negative battery cable, remove the intake manifold, and disconnect the sensor's electrical connector. Remove the retaining nut and the sensor. During installation, angle the sensor's electrical terminal slightly below the horizontal. For V6 models, the knock sensors are between the cylinder heads, also requiring intake manifold removal. Disconnect the battery cable, and remove the intake manifolds and water transfer hose. Disconnect the sensors' electrical connectors and either unscrew the sensors or the retaining nuts/bolts.

Genuine Lexus RX350 Knock Sensor

Engine Knock Sensor

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4 Knock Sensors found

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Lexus RX350 Knock Control Sensor
Part Number: 89615-20090
$143.34 MSRP: $195.42
You Save: $52.08 (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:
- 2007-2025 Lexus RX350 | STD | 4 Cyl 2.5L, 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS, 3MZFE, A25AFXS; AALH15L-AWXGBA, AALH15L-CWXGBA, AALH16L-AWXGBA, GGL10L-AWTGKA, GGL10L-CWTGKA, GGL15L-AWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA, GGL25L-AWZGBA, GGL25L-BWZGBA, GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA, GYL10L-AWXGKA, GYL10L-CWXGKA, GYL15L-AWXGKA, GYL15L-CWXGKA, GYL20L-CWXGBA, GYL25L-AWXGBA, GYL25L-CWXGBA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX350 Knock Control Sensor
Part Number: 89615-06010
$143.34 MSRP: $195.42
You Save: $52.08 (27%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control; Knock Sensor
- Manufacturer Note: (L)
- Replaces: 89615-20090
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007-2025 Lexus RX350 | STD | 4 Cyl 2.5L, 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS, 3MZFE, A25AFXS; AALH15L-AWXGBA, A25AFXS; AALH15L-CWXGBA, AALH15L-CWXGBA, AALH16L-AWXGBA, GGL10L-AWTGKA, GGL10L-CWTGKA, GGL15L-AWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA, GGL20L-CWZGBA, GGL25L-AWZGBA, GGL25L-BWZGBA, GGL25L-CWZGBA, GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA, GYL10L-AWXGKA, GYL10L-CWXGKA, GYL15L-AWXGKA, GYL15L-CWXGKA, GYL20L-CWXGBA, GYL25L-AWXGBA, GYL25L-CWXGBA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX350 SENSOR, KNOCK CONTRO
Part Number: 89615-78010
$128.65 MSRP: $173.97
You Save: $45.32 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Manufacturer Note: (J)
- Replaced by: 89615-F6010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; TALA10L-AWZGTA, TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-AWTGTA, TALH17L-CWTGTA
View related parts
Lexus RX350 SENSOR, KNOCK CONTRO
Part Number: 89615-F6010
$127.60 MSRP: $173.97
You Save: $46.37 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Knock Sensor
- Replaces: 89615-78010
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; TALA10L-AWZGTA, T24AFTS; TALH17L-CWTGTA, TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-AWTGTA, TALH17L-CWTGTA

Lexus RX350 Knock Sensor

Lexus RX350 Knock Sensor provides quiet power by sensing pinging and allows the engine computer to fine-tune the spark on the fly to avoid damage and maintain performance. Mounted to the engine block, this piezoelectric device senses the vibration pulses, converts them into voltage, and sends the data to the powertrain control module, which works backwards in small steps to retard timing until there is no more detonation, then advances timing again in small steps for optimal engine efficiency. Early versions of the RX350 had a single broadband Knock Sensor that monitored the entire bank, but later generations of RX350 models have dual-cylinder specific Knock Sensor units allowing the computer to adjust timing for individual cylinders to further refine fuel economy and reduce emissions. Regardless of style, each of the sensors operates within a real-time feedback loop that ensures combustion approaches the knock limit, enabling the Lexus to safely take advantage of lower octane fuel under changing altitude or temperature. The only meaningful difference between the two styles is in granularity, in that the dual setup provides more precise and faster correction, without needing additional driver input, ensuring the signature smooth Lexus ride. If a Knock Sensor fails, an RX350 will have a check engine lamp on and have conservative timing, making the Lexus sluggish. Prompt replacement of the Knock Sensor restores full spark control.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX350 Knock Sensor available on LexusPartsNow.com. Our OEM Lexus RX350 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 RX350 Knock Sensor Parts Questions & Experts Answers

Knock Control Sensor
89615-20090
Q: How to disconnect, remove, and replace the Knock Sensor on Lexus RX350?
A:
For four-cylinder models, the knock sensor is on the engine block's backside, requiring intake manifold removal. Disconnect the negative battery cable, remove the intake manifold, and disconnect the sensor's electrical connector. Remove the retaining nut and the sensor. During installation, angle the sensor's electrical terminal slightly below the horizontal. For V6 models, the knock sensors are between the cylinder heads, also requiring intake manifold removal. Disconnect the battery cable, and remove the intake manifolds and water transfer hose. Disconnect the sensors' electrical connectors and either unscrew the sensors or the retaining nuts/bolts.