alanann

Just to confirm the strut mounting is not altered, all the cord is doing is absorbing the up/down movement of the strut as the mount did originally before the rubber in the mount settled.

This may be of interest to owners with air suspension. Since buying the car in January I have a pitter patter knocking from the front suspension but also excess road noise First thing I thought was tyre noise but the car had 4 recent new Bridgestone tyres so it seemed unlikely, I read on the forum that the top mount bearings will be the cause and can be replaced at a reasonable cost I made arrangements to have the job done but when i got the mounts off the bearings were perfect so decided to give it a miss, luckily it is a easy job to remove the mounts without needing to remove the wheels, 30 min job for an old codger with arthritis, after a few months the noise was driving me mad so i decided to remove the mounts again for another look and although the bearings were still ok I discovered another problem, The mount has a 6mm gap for travel between the inner and outer parts of the mounting with a flange which acts as a stopper, the problem is the rubber appears to have settled so when on the car with the weight on the wheels the gap has gone and the flange is touching the main part of the mounting which is transmitting the road noise direct to the body and the when on rough tarmac the flange hitting the body mount is causing the knocking noise. The answer is to prevent the 2 parts of the mount touching and transmitting the noise, see the pic so as a test to prove the theory I use a length of 6mm nylon rope and wound it in the gap 2 turns and glued with hot glue to hold in place, The result is amazing the car now drives as I expected when i got the car with no knocks and minimal road noise. I plan on replacing the cord with a spacer from 6mm sheet rubber but for now the cord is absorbing the noise. sorry for the long saga Alan.

WBAC are currently offering £2250 more than I paid for my 10 rx450 in January.

I found some old posts in the LS forums with the info I needed so I have managed to get my suspension sorted.

Hi all, I'm looking for some help to adjust the suspension height offset on my 2010 RX450h SE-L with air suspension using Techstream, I did raise it about 20mm to try and level it but it is now not level and too high and i want to lower it, it seems a bit hit and miss so I am hoping someone can help with the correct sequence to adjust the height. could someone also give me the standard ride height for the car? any help much appreciated.

Has anyone replaced the rear trailing arm bushes with poly bushes on the RX450h?

Update, I gave the car the once-over and the struts appear to be okay, the pitter patter from the front turned out to be wheel balance, the tyres are barely worn Bridgestone been on less than 2 years and less than 2k miles but the weights were loose on nearside front and it looks like some of the weights had fallen off so got it rebalanced today and the annoying noise has gone.

Thanks for the reply Barry, The fluttering noise sounds like mine, So i need to get the top mount bearings replaced, I know that someone offers a replacement service but i fancy doing it myself and I can identify the bearings when off the car, but I wonder has anyone got the spec of the bearings and I can get them beforehand to save any delay when the struts are stripped? would the worn bearings cause increased road noise? thanks.

What are the symptoms to indicate worn top mounts on the 450 air struts

Hi All, Can the air suspension be replaced with the coil suspension from the SE etc? or are coilovers available? has anyone done this conversion? thanks Alan.

Thanks Radu, Drivers side front was around 25mm low so adjusted the sensor rod out 2.5 turns and got it sorted. Alan.

Hi Herbs, I found the sensors ok, I need to check the heights to see which corners are high or low, Would it be possible for you to check the heights on your car either ground to wheel arch or wheel centre to arch. Thank you Alan.

Thanks for the reply Peter, the links appear to be ok but i was unsure the best way to tackle the job.

My 10 RX450h has air suspension and the driver side front is lower than passenger side, I am looking for advise on the procedure to adjust the susp height with techstream, I have done the system scan and have the info as in the photo but can anyone tell me what to do next to carry out the adjustment?

Thanks to Herbie I got the info I need.