Knocking noise

[Lockie C200h]

Hi all. Hoping someone may have had a similar problem and point me in the right direction. I have a 2012 F-Sport which I love. There is a knocking noise coming from the front, possibly N/S, that is almost constantly there going over a rough or uneven road. She had new front shocks last year and I don't think it's the steering column. She's just had her service at a Lexus main dealer. They were made aware of the noise and even came out with me and spotted the noise straight away. They spent an afternoon going through all the joints,test driving and checking again under the front and frustratingly could find anything untoward. She even flew through her MoT. There is no loud clunk going over big bumps and she is solid apart from this knocking. She also drives beautifully. Has anyone any idea, please?

[thar]

My car developed a "click", a few months after I bought it. It turned out to be the top mount. May not be the same issue you're having, but here's my post with some of the possible diagnoses Lexus came to.

https://www.lexusownersclub.co.uk/forum/topic/107037-noise-coming-from-drivers-side-front-wheel/?do=findComment&comment=945991

[PearlyWhiteCT]

We just had a visual health check on our 2013 Lexus CT for the same issue, weird clunking sounds coming from the front when driving. I thought it was suspension related, turned out to be a steering shaft. Lexus technician made a video and replicated the sound by turning the steering wheel back and forth.

Bill came to just shy of £900, though it was advisory by Lexus and not really necessary. 

Money well spent 🙂

[PRT68]

Front drop links.