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Hi I have a bmw 118 - just got brake pads and disc and oil changed, how there is a whistle noise coming when I accelerate - what could it b?

Posted by Anonymous on

  • paulmacintyre
    paulmacintyre Apr 06, 2015

    make sure oil cap is installed. Brakes usually have a 200-500km seat in period and can make noise until seated

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  • BMW Master
  • 3,218 Answers

Make sure the oil cap is installed. Sometimes brakes will need a seat in period depending on the quality of product used. This can be a normal until they are used for a while and seat in

Posted on Apr 06, 2015

  • Anonymous Apr 06, 2015

    Hi Paul - thanks for that.
    Just took another drive and the whistling just starts when I go over the 1500 revs ?
    Could it b the turbo?

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Posted on Jan 02, 2017

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SOURCE: BMW 320d 2005 Brake pad warning light reset

What it sounds like to me is that they didn't replace the "brake sensors" when they did the job. They are a seperate part and if whomever changed your brakes didn't charge you, I think like $20, for the part, then that's the problem.

Posted on Mar 30, 2009

danoyachtcap
  • 2899 Answers

SOURCE: High pitched whistle noise coming from engine

Check the transmission oil level. That sometimes causes a whining sound.
Hope this helps.

Posted on Mar 25, 2015

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2 Answers

Brakes make a whistle noise when applied and sometimes a low grown or grinding when coming to a slow stop or start.


A grinding or rumbling noise can also be symptoms of a wheel bearing or constant velocity joint in a driveshaft. A worn wheel bearing can also cause a 'whistling' sound (as can a worn CV joint).

A grinding noise with brakes is either worn pads causing metal to metal contact on the brake disk/rotor, or the brake backing plate catching on a spinning rotor ... or a loose/missing anti squeal brake shim (they stop the pads from rattling and vibrating).

However, as you say a mechanic has looked at the brakes and can't find anything wrong .. I think I would begin to suspect a wheel bearing or constant velocity joint on the driveshaft (front wheel drive cars).

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My brake pads got changed due to whistling, now after been changed to a more expensive one it's still whistling. .. what do I do and the disc is not wounded


Hi if you are talking about when you brake this happens then you will have to iver put some shims on the brake pads or put some copper-slip on the back of the brake pads(you can get the copper-slip at eny car spare shop,I hope this is what you was asking.
all the best hope you get it sorted these little things do annoy us.

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I have a whistling noise coming from my car, this is only when moving. If I apply the brakes or am at a standstill, even if I rev the engine there is no noise. When I had service I was told my front...


Whistling noise is pretty vague. There are several possibilities. The brakes could be the source of the noise. If they're 85% gone they should be replaced anyhow regardless of whether they are the source of the noise. Otherwise the noise will no longer be your biggest problem. Disc brakes do have what is called a worn pad indicator. This is simply a metal tab that scrapes the brake rotor, making an annoying, scraping noise until the brake pads are replaced.
Other than this, there are several possibilities. Where is the noise originating? Could it be wind noise coming from an ill fitted window seal? Vacuum hoses are another noise source, although they usually only whistle when decelerating or at idle.
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It could be what is called the squeal warning on the front disc brake pads. If so, it indicates the pads are worn to the point that they should be replaced before they begin to do damage to the rotors. Pretty easy for someone who knows how to jack the car up, remove the wheel and take a look how much brake pad is left.

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If it started after the brakes where changed it might be a problem with installation (maybe brake wear indicators [metal tabs to allert when brake pads are low]) or could just have a pebble stuck inbetween pad and disc. sometimes if the pad /disc wears unevenly, one or the other will develop a lip and this may cause your whistling sound.

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Actually - I had the same problem and replaced my brakes 4 times in a year. YES 4 TIMES because of the whistling. I switched from metallic to ceramic pads and works like a charm! Ceramic will not allow the noise, plus I have found to have much better control over braking and short distances.

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