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Knocking from front suspension or steering

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I've recently noticed a clonking sound from the n/s/f suspension which can sometimes be felt through the steering wheel. It started a month ago and only happened now and again, but lately it's become more regular and a lot worse. I can make it clonk a little if I bounce the wing up and down so I'm guessing it's something to do with the damper (it may be a bush).

 

I contacted my dealer (Specialist Cars, Stevenage) and asked if they could have a quick look just to make sure it's nothing horrendous but they want the car for an entire day next week, which means I have no car until then. I sort of hoped one of their fitters might have a look whilst I waited but no such luck!

 

Mileage is just under 36k and it's 3 years old and 4 months out of warranty.

 

Any ideas on what it could be???

 

 

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I would say anyone of the suspension components as when my E60 front balljoints went is just how you describe the noise and sensation, BUT I had double the mileage and more than double the age when these things failed.

 

If you are minded too, jack up each front wheel and have a prod around all the bushes and balljoints with a lever to detect any untoward movement.  Any movement will be obvious if serious.

 

If you hit a pothole hard or bump up and off kerbs frequently you may find something amiss at that mileage.

 

Mine is just over 37k miles and is just over 3 1/2 years old with just under 6 months warranty to go so I would be interested to see what the outcome is.

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I haven't jacked the car but I turned the wheels onto full lock in both directions and couldn't see/feel anything untoward. Given that it drives straight and the steering is unaffected, my money is on something like bottom damper bush. I am very careful to avoid potholes and never hit kerbs, not even when parking.  

 

I had it serviced by Specialist Cars just three weeks ago (at a cost of £641) so if there is something amiss, I'll involve BMW. It seems unlikely anything would have worn itself out within 3 weeks/600 miles so it seems they just missed it.

 

I'll pop into my local dealer Wednesday, see what's going on, and then report back.

 

Incidentally, I was going to keep the car until the PCP ends next April but I called into a Mercedes dealership yesterday and fell in love with the new E Class.

 

The F10 badly needs it's update as it's now way behind the Mercedes in terms of build quality and solidity of materials. If the test drive goes well next week then I'll replace my 5 Series imminently. It should not need suspension work at 36k miles!

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My local dealer offered two ways of dealing with this (unlike Specialist Cars who offered no useful solution). One, book the car in for evaluation at £140/hr or, two, call in for a free road check. This involves a fitter looking the car over and taking it for a road test to find the problem. I chose the latter but when I set out for the garage there was no noise at all. So I returned home and used the car for the day (over 100 miles). All seemed well until I reversed into my drive and it started knocking again!

 

It's all quiet again so I reasoned there can't be too much amiss otherwise something would have broken/fallen off by now. The offer of the road free check is open ended so I'll just wait until (if) the noise returns and then call in whilst it's still clonking.

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Please keep the thread updated as I may have a similar problem.

 

It's hard to say, it might be completely different... But..

http://www.bmwlander.co.uk/index.php?threads/knocking-noise-any-suggestions-please.1091/

 

I have changed just about every bush and link, even the front shocks..

 

But the noise only appears on warm / hot days or if I have been driving for over 45 mins or so...

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I don't wish to state the obvious, but clearly there is a problem. Just take the car in to a garage to be checked. Again, sorry to state the obvious, but take it to a local garage you trust as opposed to a BMW one.

Sent from my LG-H815 using Tapatalk

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Hi guys sorry for bringing this old thread back to life but i have the same problem above now the weather been nice again.

 

I seem to have a knocking coming through steering and sometimes can be felt through the floor.

 

Bmw looked at it in April last year tan jully twice and in september they changed the track rod ends as that's what they thought it is.

 

It only happens if the weather is warm and worse if i have been using the aircon aswell and to clarify its not felt when you turn on or turn off the aircon, its only if the aircon been on for lets say 45 mins in a hot day.

 

Has anybody got an idea what this might be please?

 

 

 

 

 

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Warmer weather could make the rubber bushes that bit softer and allow enough movement for a clonk to be heard. 

 

Again, get it up in the air and get a prod at every single suspension joint for excessive movement.

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Well bit of an update, the noise is still there no movement can be found on the suspension, just came back from Scotland today 200 miles journey no noise, it was 22 degrees but put up with the heat to see if the noise going to come back, and nothing then drove 10 miles in to town with the aircon to drop my daughter of somewhere and the knocking noise is back.

 

On the way back turn off the aircon and came to stop at traffic lights the noise is back when the start stop starts the engine back again, it can be felt on uneven surface like speed bumps.

 

It is felt through steering badly or floor still  i am at a total loss.

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If it was a loose component in the engine bay, there would be clonks associated with starting the engine but I can't figure how that shouldn't translate to feel thru the steering wheel, unless its major mechanical stuff but that would be obvious to spot I would have thought.

 

Its strange indeed as you are saying its there when the engine starts, can you feel it thru the steering wheel when the engine starts? 

 

Loose or damaged steering rack or column? 

 

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Thanks for your reply Andrew,

 

So let says you had the aircon on and you stopped at traffic lights engine stop, when it restarts you hear the clonk and feel it through the steering then when you are driving slowly you can hear it knocking as the car moves through the steering and floor

 

I coudlnt feel any movement in the universal joints of steering column yesterday, but this is specifically aircon being on for a bit on a warm day. This morning the car was absolutely fine no knocking and everything felt tight as it should do. 

 

I just dont understand why the aircon would have effect on this noise, if the compressor wasnt tight then it would knock all the time. 

 

 

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So more update knocking comes from the steering rack. It will only do it when you rock the  wheel stationary with the load and not jacked up. Contacted bmw to determine what they exactly changed last time and hopefully it’s not the rack as that won’t be cheap!

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I still dont understand what part the aircon play in it. I have no noise on it again this morning but there is no doubt if i put the aircon during midday the noise will return. 

Edited by Erhan

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more updates for anyone following this thread, the car is going back to bmw this month and they confirmed that they have changed the full rack on my car back in september not just the track rods and they think the noise might be coming back from somewhere else so watch this space. 

 

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Hi all, I have just found this post while researching for my 6 series (same platform). Currently away on holiday over 3hrs from home and my car has developed similar symptoms. Although I mainly attributed the issue to low speed getting hot where at speed it’s kept cool. Mine definitely sounded as though it was on the right side only. We drove 40 min to the nearest BMW dealer today along quick road and when we arrive nearby there was no sign of the issue. I drove round locally to warm it up and sure enough the issue appeared. After a test drive to prove the issue the car is now with them and we are waiting to hear back. I’ll let you know what we find out.  

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Wrote that earlier it didn’t post.... update. We have left the Falmouth BMW and they couldn’t find the issue in the time they had (squeezed us in).  But they have checked the suspension and and steering and said it would pass an mot. The only things of note were: a little bit of play on the inner bushing of the steering rack and they said there had been a fault code with the variable damper control... I have only had the car just over 3 weeks and had no faults pop up...

Once home we will take it to one of the local dealers and get them to sort it. Being less than 30 days since I bought the car, I’m not letting them fob me off until it gets worse. 

Please let me know if you find out your issue. Don’t suppose you have VDC too?  

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Hi Buddy sorry to hear you are having the same issue, no I don’t have vdc I wish I did. I think the inner bushing will be the issue and you will end up with a new rack the x3 is effected with it from what I have been reading and there is a repair kit for them. Mine is booked in to dealer on 21st of June so will find out then. It took them 4 attempts before they replaced the rack which was in September. You can feel it on steering and track rods when you rock the wheel back and forth when it’s on ground. Ask them to try that and mine usually happens more if air con turned on when it’s warm.

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