Help! Rear wheel humming noise. Polo GTi

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Vonbek2004
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Vonbek2004 » Fri Jun 05, 2020 8:55 pm

Hi all,

So as mentioned in previous posts I was looking at rejecting my vehicle, which they have upheld given I reported the issue within the allowed time frame (consumer rights)

Now I am in a conundrum!

I have been informed by VWFS that there was another software update issued in March 2020 to do with the mooing noise. My car was last in garage Feb 2020.

Has anyone had this update on their car? VWFS advises this was published sometime after the 10/03.

Should I allow VW to run their March Fix and see what happens or proceed with the rejection. Now the only issue with the car is this mooing noise other than it’s been reliable, thirsty but reliable

What’s everyone’s thoughts or what would you do?


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Ima
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Ima » Fri Jun 05, 2020 8:58 pm

Well if this is the only issue and you enjoy the car trying the fix seems sensible on the basis that you can proceed with rejection if it doesn’t work. That’s what I’d do as it would bug me not knowing as if it does work then you know you have a good car to keep rather than try Ito find something else which itself may not be without some issue.

monkeyhanger
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Re: Help! Rear wheel humming noise. Polo GTi

Post by monkeyhanger » Fri Jun 05, 2020 9:10 pm

Vonbek2004 wrote:
Fri Jun 05, 2020 8:55 pm
Hi all,

So as mentioned in previous posts I was looking at rejecting my vehicle, which they have upheld given I reported the issue within the allowed time frame (consumer rights)

Now I am in a conundrum!

I have been informed by VWFS that there was another software update issued in March 2020 to do with the mooing noise. My car was last in garage Feb 2020.

Has anyone had this update on their car? VWFS advises this was published sometime after the 10/03.

Should I allow VW to run their March Fix and see what happens or proceed with the rejection. Now the only issue with the car is this mooing noise other than it’s been reliable, thirsty but reliable Image

What’s everyone’s thoughts or what would you do?


Sent from my iPhone using Tapatalk
Had the latest update on the wife's car 2 weeks ago at its first service. They updated the ABS controller. In my opinion it hasn't worked as well as the update to my 2018 GTI+. There has to be a difference in the way the brakes work between the 2 cars because the brakes on the 2019 one (wife's) are grabber and the pedal is firmer.

There will be an easy fix to this, either a change in pads or discs to something non-OEM, it's just resonance transfer that needs damping.

If you want to reject for mooing, don't wait for this update to fix because it won't.

Vonbek2004
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Vonbek2004 » Sun Jun 07, 2020 8:58 am

monkeyhanger wrote:
Vonbek2004 wrote:
Fri Jun 05, 2020 8:55 pm
Hi all,

So as mentioned in previous posts I was looking at rejecting my vehicle, which they have upheld given I reported the issue within the allowed time frame (consumer rights)

Now I am in a conundrum!

I have been informed by VWFS that there was another software update issued in March 2020 to do with the mooing noise. My car was last in garage Feb 2020.

Has anyone had this update on their car? VWFS advises this was published sometime after the 10/03.

Should I allow VW to run their March Fix and see what happens or proceed with the rejection. Now the only issue with the car is this mooing noise other than it’s been reliable, thirsty but reliable Image

What’s everyone’s thoughts or what would you do?


Sent from my iPhone using Tapatalk
Had the latest update on the wife's car 2 weeks ago at its first service. They updated the ABS controller. In my opinion it hasn't worked as well as the update to my 2018 GTI+. There has to be a difference in the way the brakes work between the 2 cars because the brakes on the 2019 one (wife's) are grabber and the pedal is firmer.

There will be an easy fix to this, either a change in pads or discs to something non-OEM, it's just resonance transfer that needs damping.

If you want to reject for mooing, don't wait for this update to fix because it won't.
Thanks for the advice!

I’ve decided I am going to allow them to complete the fix, should that not work then I am going to try the option you said, which was replacing the discs and pads with aftermarkets.

I really don’t want to hand the car back as I love it and I don’t think I’ll be able to get something of the same calibre, plus there is all the money etc I’ll lose with 18months of ownership.

I’ve tired to find aftermarkets but not had much luck and wouldn’t know which to buy either. Any ideas?


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monkeyhanger
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Re: Help! Rear wheel humming noise. Polo GTi

Post by monkeyhanger » Sun Jun 07, 2020 9:19 am

Wouldn't know which ones to pick size wise or whether different pads on OEM discs or different discs on OEM pads would solve it on their own or if you have to go the full hog to replace discs and pads.

I'd be wanting to find out what brands the OEM parts are too. If VW fit brand X you.want to replace with brand Y, not brand X.

Looking on a website like Euro Car Parts, when you put the car details in, you should see their choices for your car.

deanjesper
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Re: Help! Rear wheel humming noise. Polo GTi

Post by deanjesper » Sat Jun 13, 2020 11:18 am

I had my car booked in for March before lockdown and it was cancelled. Finally had it rebooked in last week. It went in and they said there was a software update (which matches what you guys have said above) so they did that, took it out for a drive and they can still hear the noise. Luckily they've captured it and have sent it off to VW for review. I'm not really sure what will happen next...

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Re: Help! Rear wheel humming noise. Polo GTi

Post by deanjesper » Mon Jun 15, 2020 1:09 pm

Sorry for the double post but I just wanted to update on my situation. So my car went in last Thursday and was told that there was a TPI outstanding for a software update. They applied the software update and the mooing was still happening. They've captured the sound and sent it to VW and VW have come back and said that they're investigating into a new TPI for a fix. So it sounds like they have no idea...

Vonbek2004
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Vonbek2004 » Tue Jun 30, 2020 10:30 am

Hi all.

Just an update.

So my car is off to the garage again for another update, this update was released from VW around mid-March..

Let you know how it goes but I am not convinced it’s going to fix the humming issue..

I might end up doing what monkeyhanger suggested and start looking at aftermarket pads and discs as a possible resolution..

stuartrendall
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Re: Help! Rear wheel humming noise. Polo GTi

Post by stuartrendall » Tue Jun 30, 2020 11:46 am

This may be a bit of a long shot but what wheels do people with mooing brakes have. I myself have not YET experienced this with the stock 17" parkers. Maybe it could possibly be a resonance in the alloy itself. Like I said though, this could be a long shot.

Vonbek2004
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Vonbek2004 » Tue Jun 30, 2020 11:50 am

stuartrendall wrote:This may be a bit of a long shot but what wheels do people with mooing brakes have. I myself have not YET experienced this with the stock 17" parkers. Maybe it could possibly be a resonance in the alloy itself. Like I said though, this could be a long shot.
I’ve currently got the 18” wheels..
Have to see what others advise though..

SRGTD
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Re: Help! Rear wheel humming noise. Polo GTi

Post by SRGTD » Tue Jun 30, 2020 12:29 pm

@stuartrendall; that’s an interesting theory that it might only be cars with 18” Brescia alloys that have mooing brakes.

Curiosity got the better of me so I did a bit of digging. Forum member Trantor had the mooing issue with their car’s brakes and they have 17” Parker alloys, so it doesn’t seem to be just cars with 18” alloys that have the mooing issue.

It was a good shout though.

MattHGR
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Re: Help! Rear wheel humming noise. Polo GTi

Post by MattHGR » Tue Jun 30, 2020 2:51 pm

I'm also on 17s with the mooing. Nearly at 7k miles.

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Vonbek2004
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Re: Help! Rear wheel humming noise. Polo GTi

Post by Vonbek2004 » Tue Jun 30, 2020 3:27 pm

Haha well that was a pointless drive to the local dealership!

So VWFS advised that there was a new software update, so all booked In only to be told by my local dealer that there is no new update and the only thing that changed was the number of the TPI code identifier, the update is the same as what my car has.

My decision is to keep the car anyways even though I have the opportunity to return as it’s too much hassle and lost money to change so early in my agreement. I have to taken into account gap insurance I purchased, extended service plans etc, so for a little bugging noise it’s not worth rejecting.

I am going to look at trying to resolve myself seeing as VW haven’t got a clue!

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OomStu_ZA
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Re: Help! Rear wheel humming noise. Polo GTi

Post by OomStu_ZA » Tue Jun 30, 2020 3:45 pm

Many years ago the discs and pads were replaced on one of my old Polo's and this was the first time I experienced mooing brakes. Since my Dad was in the motor trade at the time, I was able to return all the kit and get the upgraded equipment instead which solved the problem 100%. No more cows, yay.

My summation is VW are cheaping out on us big time (let’s be honest they've cut loads of costs) and use less expensive parts to save overall cost. I reckon by going to a reputable brake centre / shop /garage the problem could be resolved quickly but at OUR cost of course.

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Re: Help! Rear wheel humming noise. Polo GTi

Post by MilgeS » Tue Jun 30, 2020 10:34 pm

Had mine in for service today, I asked for updates to be checked (the one on mine was already most current) and I also asked for my rear pads to be "roughed up", which they did, foolishly I never thought to ask if it would be chargeable due to several visits for mooing but I got stung £54 for that job, kicking myself now..........It has been raining here all day so tomorrow hopefully it will be dry and I can check for mooing.

Rest f the service was ok, they have ordered a new instrument cluster as apparently mine was throwing lots of errors when they plugged it in, I have never seen a warning light in 2 years, strange

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