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D4 - Common Faults Quick links to all known common faults and their solutions

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  #1  
Old 5th December 2016, 07:12 PM
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David's8 David's8 is offline
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Quote:
Originally Posted by Lee S View Post
Otherwise known as a screwdriver wedged between offending noisy article and the tester's lug 'ole...
They did move on to somethings slightly more sophisticated (Fast Fourier Transform analysis was involved ) but the screwdriver technique is something I can understand and have employed on various cars I have owned.
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Old 5th December 2016, 11:06 PM
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What do you reckon to the Matrix LED's as opposed to the standard (HID?) headlights?
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Old 6th December 2016, 06:01 AM
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The matrix beam LED are absolutely brilliant. You can be on full beam all the time and it will black out thoose things coming towards you, but keep full beam around them. Very different to just adaptive lights I had before, which are either fully on or fully off. When you go into a built up area with street lights it turns itself off, so assume it can only cope with so many lights coming towards the car at any one time.

I used to get flashed with the adaptive lights, but as yet never have been with matrix.

Cheers
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Old 6th December 2016, 05:45 PM
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Good to know that it was the propshaft bearing causing the drone at the end. I have a slight drone which increases dramatically on rough surface - e.g M25 junction 9
I guessed tyres, will soon change them, if it doesnt help will check the centre bearing.
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Old 6th December 2016, 08:25 PM
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I have found that different brands of tyre have a marked difference on the noise level and mpg. I have been recording every fill up for nearly 4 years by tyre type.

Of the Pirelli, Michelin and Goodyear tried over both D4's, th Goodyear are by far the quietest, both in 19 and 20 form. Pirelli is best on mpg and Goodyear the worst.

Michelin Pilot Sport were the loudest and Pirelli somwhere between the two.

Goodyear are the set I preferred.

Has anyone tried Continental ContiSilent tyres - the ones with the foam in?
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Old 6th May 2019, 05:43 PM
h20wes h20wes is offline
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I am bitterly disappointed with my new d4, after many years of blissful d3 ownership I purchased a 2012 lwb 3.0 tdi d4. I have the dreaded droning noise, it is appalling. I have had the car 3 weeks, and when I bought her, I knocked the price accordingly so had the budget to:
4 new Goodyear f1 265/49/20 tyres
All four wheels checked, and powder coated
Both front wheel bearings
All fluids including gearbox and filter
Professional 4 wheel alignment (to the mm)
Nitrogen filled tyres
New oem discs and ebc ultra max 2 pads (superb in the d3)
Fresh brake fluid, system bled inc vcds bleed

Car is transformed, but has serious front road noise/ drone, drives me insane! So bad that I am actually thinking of loosing money and moving it on. It’s not prop centre bearing as is it definitely front, I’m contemplating having 2 new driveshafts as have read that Audi have fitted these for people complaining about the same issue, that would be my last straw as I cannot stand it. I even put my old d3 wheels on that had awesome (silent) Avon Zzr 5 tyres on, it was exactly the same. Every time I ask someone, they say tyre noise, but it must be more than that surely. I’m shocked at how bad the car is compared to the d3, a serious regrettable purchase, sad times
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  #7  
Old 6th May 2019, 06:21 PM
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Quote:
Originally Posted by h20wes View Post
I am bitterly disappointed with my new d4, after many years of blissful d3 ownership I purchased a 2012 lwb 3.0 tdi d4. I have the dreaded droning noise, it is appalling. I have had the car 3 weeks, and when I bought her, I knocked the price accordingly so had the budget to:
4 new Goodyear f1 265/49/20 tyres
All four wheels checked, and powder coated
Both front wheel bearings
All fluids including gearbox and filter
Professional 4 wheel alignment (to the mm)
Nitrogen filled tyres
New oem discs and ebc ultra max 2 pads (superb in the d3)
Fresh brake fluid, system bled inc vcds bleed

Car is transformed, but has serious front road noise/ drone, drives me insane! So bad that I am actually thinking of loosing money and moving it on. It’s not prop centre bearing as is it definitely front, I’m contemplating having 2 new driveshafts as have read that Audi have fitted these for people complaining about the same issue, that would be my last straw as I cannot stand it. I even put my old d3 wheels on that had awesome (silent) Avon Zzr 5 tyres on, it was exactly the same. Every time I ask someone, they say tyre noise, but it must be more than that surely. I’m shocked at how bad the car is compared to the d3, a serious regrettable purchase, sad times
Jeez Louise. Surely someone reading this can think/recall of a solution...
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  #8  
Old 3rd May 2022, 05:38 PM
eki eki is offline
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Quote:
Originally Posted by h20wes View Post
I am bitterly disappointed with my new d4, after many years of blissful d3 ownership I purchased a 2012 lwb 3.0 tdi d4. I have the dreaded droning noise, it is appalling. I have had the car 3 weeks, and when I bought her, I knocked the price accordingly so had the budget to:
4 new Goodyear f1 265/49/20 tyres
All four wheels checked, and powder coated
Both front wheel bearings
All fluids including gearbox and filter
Professional 4 wheel alignment (to the mm)
Nitrogen filled tyres
New oem discs and ebc ultra max 2 pads (superb in the d3)
Fresh brake fluid, system bled inc vcds bleed

Car is transformed, but has serious front road noise/ drone, drives me insane! So bad that I am actually thinking of loosing money and moving it on. It’s not prop centre bearing as is it definitely front, I’m contemplating having 2 new driveshafts as have read that Audi have fitted these for people complaining about the same issue, that would be my last straw as I cannot stand it. I even put my old d3 wheels on that had awesome (silent) Avon Zzr 5 tyres on, it was exactly the same. Every time I ask someone, they say tyre noise, but it must be more than that surely. I’m shocked at how bad the car is compared to the d3, a serious regrettable purchase, sad times
Old post, but did you, or anybody else ever got solution for this/this kind of problem? Just same symptoms in my d3. A lot of possible reasons checked, but core reason is still unresolved.

Eki
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