c300 whining noise when turned off
#1
c300 whining noise when turned off
Hello all,
On our 2015 C300 there is a whistling / whining noise very low pitch when we turn it off for a few seconds. Any idea as to what it might be related to? Is it normal?
Thanks.
On our 2015 C300 there is a whistling / whining noise very low pitch when we turn it off for a few seconds. Any idea as to what it might be related to? Is it normal?
Thanks.
#2
Does your car have the full LED lighting system ? If so, it could be the cooling fans.
#4
Senior Member
Joined: Jan 2009
Posts: 281
Likes: 15
From: Los Angeles
2019 C43 AMG, 2017 Porsche Macan S, 2017 Mazda 3 HB
#5
Mohammad
#7
MBWorld Fanatic!
Joined: Jan 2015
Posts: 2,075
Likes: 57
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
Let's face it, it could be bloody anything... I say unless it's accompanied by smoke or flames then don't worry. Modern cars makes all sorts of weird noises.
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#8
Senior Member
Joined: Jan 2009
Posts: 281
Likes: 15
From: Los Angeles
2019 C43 AMG, 2017 Porsche Macan S, 2017 Mazda 3 HB
#9
It's possible it could be the Hardrive for the navigation/music register?
I have a sound from behind the instrament cluster sounds like there's something crawling or moving stuff around back there? And ideas?
I have a sound from behind the instrament cluster sounds like there's something crawling or moving stuff around back there? And ideas?
#12
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 183
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
It is mainly all the emissions gear shutting down. Ignore. Even the fuel pump can run for a few secs to bring the fuel rail up to pressure for a restart. ABS pump needs to shut down. You will hear Servo's going to default. Every Benz for a very long while has done it. Models with an excess air pump are the most noticeable.
Last edited by Glyn M Ruck; 02-13-2016 at 10:30 AM.