Question about 1996 Lexus ES 300

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Have been told 'knox' sensor's need replacement @

I have been told 'knox' sensor's need replacement @ nearly $700...?????

Upper part of motor needs to be taken off, etc..if I don't replace the sensor, could bend a valve??

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The "knock sensor" adjusts timing. So bent valves could result if timing is way off. Your car would quit running before timing was that far off. $700 sounds high shop around.

Posted on Jun 18, 2009

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If you are a back yard mechnic you can do it yourself,you can get the sensors pretty cheap at

Posted on Dec 07, 2011


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Location of knox sensor

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Approximately how long does it 

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I have been told that my car's Knox sensor needs replacement @ £300. Its an Audi A4. the car is running alright though. Is it essential?

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