Continuous knocking from left side of car. Advice appreciated

By MarkB1983
September 26, 2017 in Lexus GS 300 / Lexus GS 250 / Lexus GS 430 / Lexus 450h / Lexus GS 460 Club

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MarkB1983

Posted September 26, 2017

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Posted September 26, 2017

Hi all,

Apologies for my diagnosis being slightly vague but I have an issue with my GS450h with 105k which has an incessant knocking noise coming from the front left side of the car. My first thought was exhaust bracket, as the rattling sounds like metal on metal however the exhaust is fine, with no movement. My next guess would be something suspension related however it has recently passed an MOT with no advisories. It had been suggested to me by a local garage that it could be something on the top suspension mount causing the noise, as it sounds like it is coming from that area, however another garage said it might be the differential, however neither garage were willing to investigate further, saying it would be main dealer. Has anyone had a similar experience of noise and what it could be?

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