I have a 06 petrol 1.6 Ambiente model.

 

Whenever I use the brakes I can hear a Faint Sshhhh sound but noticeably it gets louder when car is coming to a stop. However its still hard to notice the sound unless you turn the radio off and pay attention. The noise is not from the brake pedal. I think its definitely something to do with the brakes system and has no relation whatsoever to the suspension system.

 

My brake fluid level and colour is fine.

 

Braking performance seem not to be affected.

 

Car does not move to one side when braking or when emergency braking.

 

What are the most likely cause or causes for this sound?

Edited 16 March, 201511 yr by Laureen1979

What pads and discs have you got? I had grooved discs which made a similar noise.

I had brand new replacement pads and discs for both rear and front also brake fluid change done at the skoda dealership last year on the 31/03/14.

Rear disk guards sitting on the disks? They do come loose with age.

 

Louder with the window open?

Rear disk guards sitting on the disks? They do come loose with age.

 

Louder with the window open?

 

Oh they not suppose to touch the brake disc? No brake disc guards at the front?

Oh they not suppose to touch the brake disc? No brake disc guards at the front?

 

They're close but shouldn't be resting on the disk.

 

Guards are only on the back.

I do notice the faint shhh/hush sound more when the windows are up. When windows are down the outside noise blocks the noise as its faint however if I pay attention I can still hear the noise when the windows are down.

 

I booked an appointment at the skoda dealership next Monday afternoon but they told me on the phone that I may be liable for a £96 investigative charge if they find out that the parts they fitted last march are not faulty. Surely if its under 1 year warranty there should be no charge at all right?

Well, yeah, IF the parts are faulty, then obviously it'll be under warranty, but if it ain't that then it means it's something else which would heavily imply that it's nothing to do with work they've already done so they're charging you for looking at it as it's something OTHER than what they did. They're only charging if it's a different fault, so it's fair that they have to charge for their time.

Before they fit new parts they should check that the dependant parts that the new parts that will go on are trouble free. For example before the garage regas aircon the mechanic should check if theres no aircon leaks etc. if they are a truly good garage.

Also I cant see anywhere in the skoda terms and conditions of a £96 investigative charge unless someone can point me in the right direction to find it.

Ok Monday appointment coming up soon so is there any advise?

Sounds like a brake servo leak to me with air getting into the vacuum side through a leaking seal.

So what you saying is that sound is the air leaking from the brake servo? What are the other symptons of a brake servo leak?

You sure you want me to cancel the appointment at the dealership? My warranty on the brake pads/discs finish at the end of this month.

Can someone show me in the skoda terms conditions of a £96 investigative charge as I cant find it.

So what you saying is that sound is the air leaking from the brake servo? What are the other symptons of a brake servo leak?

 

The servo operates by applying a vacuum on a diaphragm.  When you put your foot on the brake pedal it operates a valve that allows the vacuum to pull this diaphragm. This helps increase your force on the brake master cylinder and thus the braking. The servo has seals where the push rods go through it. If one of the seals is slightly worn it will allow  air to 'hiss' into the servo. If this was really bad you would notice it by having to increase your pressure on the brake pedal to get the same braking force as a good servo.

Edited 20 March, 201511 yr by Tinbum

Ok however as I said earlier my braking performance seem not to be affected. I believe I had this sound issue for a month now.

Can a simple lack of copper grease cause the noise? I notice that I cant see copper grease on the dealership invoice. I can see skoda dealership charged £2 for brake cleaner on the invoice. If they charge for little things like that then I'm sure they charge for copper grease for replacing brakes right?

Can a simple lack of copper grease cause the noise? I notice that I cant see copper grease on the dealership invoice. I can see skoda dealership charged £2 for brake cleaner on the invoice. If they charge for little things like that then I'm sure they charge for copper grease for replacing brakes right?

Though I always use it myself for my own vehicles I have a feeling its use is not recommended now.

Edited 20 March, 201511 yr by Tinbum

Are you going to get the dealer to investigate the crunching noise from your car's suspension too?

Are you going to get the dealer to investigate the crunching noise from your car's suspension too?

No because I dont think the suspension is still under the 1 year warranty. Let me check the invoice.

Though I always use it myself for my own vehicles I have a feeling its use is not recommended now.

So dealerships dont use copper grease now when changing the brakes?

Yes, they don't.  There is no mention in the official workshop manual of any compounds being applied to the rear of the brake pads prior to replacing them.

 

You mentioned a 1 year warranty - but for what?  Are you coming to the end of a 1 year warranty provided with a secondhand car from a dealer, or is it a warranty for new parts fitted?  If the latter, all Skoda original replacement parts carry a warranty for a period of two-years/unlimited mileage from the date of purchase.  Items with warranties in excess of two years will be advised to you at the time of purchase.   That said, for new cars the warranty excludes fair wear and tear items, such as brake pads, brake discs, brake and clutch linings and more, and that would equally apply for secondhand cars.  So unless your brake problems are caused by parts you have paid for which are clearly defective, or if the workmanship fitting them is at fault, you will not be covered.  My thoughts are that if the brakes have been satisfactory for the past year, there are unlikely to be any grounds for a successful warranty claim and you will be throwing away £96.  Which all comes back to finding a good independent garage - preferably with Skoda or VAG expertise - to get your car's problems sorted.

Yes, they don't.  There is no mention in the official workshop manual of any compounds being applied to the rear of the brake pads prior to replacing them.

I suspect its probably a case of when it was applied it wasn't done carefully and much to much was put on resulting in contamination of the disks and pads and therefor a safety issue.

 

Pads also now tend to have an adhesive patch on the rear. The sliders also often have stainless steel inserts now.

Edited 21 March, 201511 yr by Tinbum

When I have replaced brake pads in the past I will own up to smearing a very thin coating of copper grease on the backs of them. I also smear a similar coating on the rear face of alloy wheels so that they do not stick to the wheel hubs.

Yes, they don't.  There is no mention in the official workshop manual of any compounds being applied to the rear of the brake pads prior to replacing them.

 

You mentioned a 1 year warranty - but for what?  Are you coming to the end of a 1 year warranty provided with a secondhand car from a dealer, or is it a warranty for new parts fitted?  If the latter, all Skoda original replacement parts carry a warranty for a period of two-years/unlimited mileage from the date of purchase.  Items with warranties in excess of two years will be advised to you at the time of purchase.   That said, for new cars the warranty excludes fair wear and tear items, such as brake pads, brake discs, brake and clutch linings and more, and that would equally apply for secondhand cars.  So unless your brake problems are caused by parts you have paid for which are clearly defective, or if the workmanship fitting them is at fault, you will not be covered.  My thoughts are that if the brakes have been satisfactory for the past year, there are unlikely to be any grounds for a successful warranty claim and you will be throwing away £96.  Which all comes back to finding a good independent garage - preferably with Skoda or VAG expertise - to get your car's problems sorted.

 

Its for new parts fitted. Oh so its a 2 year warranty instead of 1. Since the new brake pads and discs were fitted last march the car has only done 8000 miles. Realistically can brake pads/discs be worn and need replacing in 8000 miles? How often to taxi drivers get pads/discs replaced? The car was bought 2 months ago.

 

Putting no copper grease on is poor workmanship don't you think? Or putting pads/discs on without checking calipers and rear brake guards first is poor workmanship as well don't you agree?

 

Further examining the dealership invoice I can see that the dealership only replaced 1 pad at the front and 1 pad at the rear which is strange. I thought for best workmanship its best to replaced them in pairs or at least investigate why there is uneven pad wear at the front before replacing them. They changed both brake discs at the front and back.

 

When it comes to wear and tear items such as brake components then what are the exclusive warranty terms and conditions for them?

 

Also where is the £96 investigative charge mentioned on the skoda website?

Edited 21 March, 201511 yr by Laureen1979

I suspect its probably a case of when it was applied it wasn't done carefully and much to much was put on resulting in contamination of the disks and pads and therefor a safety issue.

 

Pads also now tend to have an adhesive patch on the rear. The sliders also often have stainless steel inserts now.

 

Oh your saying that brake components don't need copper grease nowadays because of the adhesive patch on the rear and stainless steel inserts?

Pads are never replaced singly.  The quantity 1 on the invoice refers to  1 set  of 4 pads for front and 1 set of 4 for the rear 

 

Mike 

 

The car takes 8 pads in total?