high frequency sound under bonnet

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foz
Posts: 30
Joined: Sat Sep 08, 2018 11:29 am

high frequency sound under bonnet

Post by foz » Sun Jun 09, 2019 9:04 pm

There's a high frequency sound under bonnet when ignition is on, but it goes off when engine starts.
Dealer's service specialist looked at the case and said it's normal and I don't have to worry.
Is it really normal?
2019 Lava Blue 1.5 TSi DSG 4Drive Xcellence


freddie
Posts: 50
Joined: Fri Jun 08, 2018 6:04 pm

Re: high frequency sound under bonnet

Post by freddie » Wed Jun 12, 2019 8:26 am

Yes, I notice it on my 1.5 tsi once the engine is stopped after a drive.


Smiffy
Posts: 35
Joined: Fri Jun 15, 2018 4:23 pm

Re: high frequency sound under bonnet

Post by Smiffy » Wed Jun 12, 2019 2:20 pm

Yes, I had that today after stopping the engine but staying in the car. It sounded a bit like a very small motor whirring.


matthab
Posts: 119
Joined: Sun Dec 02, 2018 9:37 am

Re: high frequency sound under bonnet

Post by matthab » Wed Jun 12, 2019 2:36 pm

Its common and can be two things:

1) Its the injectors coil whine, normally hear it round the ecu area. (Sorry if I have called this wrong name).
2) The coolant pump running after a drive to cool the turbo down.
Seat Ateca 1.5tsi DSG Xcellence Lux Black Magic


foz
Posts: 30
Joined: Sat Sep 08, 2018 11:29 am

Re: high frequency sound under bonnet

Post by foz » Wed Jun 12, 2019 6:42 pm

Probably it's 1) in my case. But anyway,this high pitch sound a bit annoying. People outside the car asked what's wrong with my car three times already.
Found a similar thread at german forum, topic starter was at service and dealer replaced a turbocharger. But maybe I got it wrong, since I used google translate https://www.ateca-forum.de/index.php?th ... n-rasseln/
2019 Lava Blue 1.5 TSi DSG 4Drive Xcellence


matthab
Posts: 119
Joined: Sun Dec 02, 2018 9:37 am

Re: high frequency sound under bonnet

Post by matthab » Wed Jun 12, 2019 7:48 pm

It could be worth taking it in if your worried, that's what warranties are for. My Ibiza Cupra 1.4tsi used make the same exact noise all of its life.
Seat Ateca 1.5tsi DSG Xcellence Lux Black Magic


foz
Posts: 30
Joined: Sat Sep 08, 2018 11:29 am

Re: high frequency sound under bonnet

Post by foz » Wed Jun 12, 2019 8:25 pm

I did, see my first post :) Serviceman said it's normal.
2019 Lava Blue 1.5 TSi DSG 4Drive Xcellence


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