Soft noise when driving off

[cappuccino]

2-3 week old 2013 VW Polo Comfortline 77TSI DSG.

I only just noticed this when stereo was off, after putting car into D, when driving off, there is a soft noise that is hard to describe. Not a engine or gearbox noise, or creaking... best description would be the noise cars with auto locks make, i.e. cars where when you drive over 10-20km the doors lock automatically. Very soft locking like noise. i dont think this car has auto locks.

this happens everytime, but only on the first set off. it does not happen after breaking to a complete stop and going off again.

any clues if this is normal?

[LunchboxVRS]

They do have auto lock over 15 km and yours is working buy the sound of it. You will notice the same noise when you open your door or pull the key out once you have stopped.

[readerr0r]

2-3 week old 2013 VW Polo Comfortline 77TSI DSG.

I only just noticed this when stereo was off, after putting car into D, when driving off, there is a soft noise that is hard to describe. Not a engine or gearbox noise, or creaking... best description would be the noise cars with auto locks make, i.e. cars where when you drive over 10-20km the doors lock automatically. Very soft locking like noise. i dont think this car has auto locks.

this happens everytime, but only on the first set off. it does not happen after breaking to a complete stop and going off again.

any clues if this is normal?

ABS system testing itself/loading up

[cappuccino]

They do have auto lock over 15 km and yours is working buy the sound of it. You will notice the same noise when you open your door or pull the key out once you have stopped.

just tested that theory, i can open doors after the noise and at 15-17kmph (the exact speed the noise is made)

[cappuccino]

ABS system testing itself/loading up

i think you may be right, this is when it occurs:
turn engine on, hand break off, D, accelerate, 17kmph noise
turn engine on, hand break off, S, accelerate, 17kmph noise
turn engine on, hand break off, D1, 10kmph, D2, 17kmph noise
turn engine on, hand break off, D1, 17kmph noise
turn engine on, hand break off, R, accelerate, break, D, accelerate, 17kmph noise
in all these tests, after the noise, breaking and coming to a stop then accerlerating again, the noise never came again.
it could only be made again if placed into P, turning engine off, then on again and performing the test again.

since it didnt matter what gear it was in, and the noise was only made at exactly 17kmph or 15 hard to measure.... ABS break tests sounds like what it is.

[readerr0r]

Yeah there was a discussion about a few weeks ago. You should feel it through the brake pedel when it happens too.

It's one of those things that's hard to figure out and get info on. I only just found out why my fans made a weird oscillating noise very late at night (Motor making a sound from the off peak signal AU power companies send).

[LunchboxVRS]

just tested that theory, i can open doors after the noise and at 15-17kmph (the exact speed the noise is made)

You can still open doors from the inside after it locks. drive off then stop and get some one else to try open from the outside. If activated you will hear it when hou pull the key out with doors shut. Some cars have had it working from factory but i had to code mine with VCDS. Iv never heard my abs unit while driving only on start up.

[cappuccino]

i think you may be right, this is when it occurs:
turn engine on, hand break off, D, accelerate, 17kmph noise
turn engine on, hand break off, S, accelerate, 17kmph noise
turn engine on, hand break off, D1, 10kmph, D2, 17kmph noise
turn engine on, hand break off, D1, 17kmph noise
turn engine on, hand break off, R, accelerate, break, D, accelerate, 17kmph noise
in all these tests, after the noise, breaking and coming to a stop then accerlerating again, the noise never came again.
it could only be made again if placed into P, turning engine off, then on again and performing the test again.

since it didnt matter what gear it was in, and the noise was only made at exactly 17kmph or 15 hard to measure.... ABS break tests sounds like what it is.

Here is a recording: Memo.m4a

[cappuccino]

You can still open doors from the inside after it locks. drive off then stop and get some one else to try open from the outside. If activated you will hear it when hou pull the key out with doors shut. Some cars have had it working from factory but i had to code mine with VCDS. Iv never heard my abs unit while driving only on start up.

Ahhhh I see! I'll give that a play around when I can. Hahaha, and after all this time, I kept hitting the lock button inside.

[Polo_GTI]

My GTI makes the exact same noise after 17km/hr.

I just assumed it was the auto lock feature (even though the inside locks don't actually lock)