annoying metal on metal scraping sound on w221 s350 2012

[8678aggy]

hello everyone, i have a very annoying metal on metal squeaking/grating noise on the above car,it does not appear to be on the suspension,brakes etc and is not there all the time but it is driving me nuts,any suggestions would be greatly appreciated,thanks mick

 

[malcolm E53 AMG]

When does the car make the noise is it when cornering or anytime?

Have you recently had the tyres changed?

 

[DREAMER NO2]

Check for stones i the brake disc and dust shield ...jack it up and turn the wheel

 

[8678aggy]

When does the car make the noise is it when cornering or anytime?

Have you recently had the tyres changed?

no and no,it sounds like a back plate on an hgv rubbing on the drum

 

[8678aggy]

Check for stones i the brake disc and dust shield ...jack it up and turn the wheel

i intended to do that tomorrow but it is an intermittant noise so that may not be the cause

 

[malcolm E53 AMG]

Is the handbrake a traditional type ie brake shoes in the back disc hub or an electronic type operating on the rear disc pads?

 

[8678aggy]

Is the handbrake a traditional type ie brake shoes in the back disc hub or an electronic type operating on the rear disc pads?

it is electronic,do you think this could be the problem

 

[Cole@MBS]

Front or rear???

 

[8678aggy]

it seems to be coming from the rear ,sometimes it appears to be coming from the rear seat area

 

[DREAMER NO2]

And another is - You could try spraying all the rubber bushes that you can see under the car ..Also all the rubber in sight it will preserve it for years to come ...the suspension bushes dry out after the wet weathers gone and they dry out . i used silicone spray that comes in a spray tin 1/2 doz should do it ..To find the noise try pressing down on the rear end of the car ...this silicone solved my rubbing and creaking noise

 

[8678aggy]

Front or rear???

after taking the offside front wheel off,it is the bush at the bottom of the strut which looks iffy and when you bounce the car the noise appears,is it a big job and can you just replace the bush or will you have to replace the arm too.can you recommend a good oem site or will i have to bite the bullet and go to merc,many thanks mick

 

[8678aggy]

And another is - You could try spraying all the rubber bushes that you can see under the car ..Also all the rubber in sight it will preserve it for years to come ...the suspension bushes dry out after the wet weathers gone and they dry out . i used silicone spray that comes in a spray tin 1/2 doz should do it ..To find the noise try pressing down on the rear end of the car ...this silicone solved my rubbing and creaking noise

hello,i have done this and the noise is coming from the bush at the base of the offside strut,so that will have to be done,many thanks mick