Hissing sound when moving to P and N

armend195 · 10-23-2022, 04:02 PM

Hello

It's a 2018 320d with the 8-speed auto.
When i put it from:
D into P
D into N
R into N or similar
Theres a small hissing sound coming from the greaknob.
Is this normal?
If not, what could it be?
Will link video:
https://gofile.io/d/GDU4Z8
https://anonfiles.com/eaO4e6E4ya/IMG_4299_MP4

Thanks!

Billfitz · 10-23-2022, 09:02 PM

I don't hear anything. Besides, there's nothing in the knob that could make a sound.

Wires · 10-24-2022, 08:35 AM

The gear knob is nothing more than a switch since the transmission controls are all electric, so as Billfitz said, the knob cannot be making any noise.

MidtownMike · 10-24-2022, 09:25 AM

It's an auto transmission. This means that when you switch gears, the electronic module tells the gearbox to do mechanical things and things like actuators actually move. Are you sure the sound is not just coming from the auto transmission itself doing what automatic transmissions do? Can you also hear it if you are listening under the car when switching gears? You may want to check transmission oil level & quality.

10-23-2022, 04:02 PM	#1
armend195 New Member 2 Rep 25 Posts Drives: '12 F20 120d M Performance Pkg Join Date: Oct 2020 Location: Bahamas iTrader: (0)	Hissing sound when moving to P and N Hello It's a 2018 320d with the 8-speed auto. When i put it from: D into P D into N R into N or similar Theres a small hissing sound coming from the greaknob. Is this normal? If not, what could it be? Will link video: https://gofile.io/d/GDU4Z8 https://anonfiles.com/eaO4e6E4ya/IMG_4299_MP4 Thanks!
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10-23-2022, 09:02 PM	#2
Billfitz Lieutenant General 8245 Rep 16,089 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	I don't hear anything. Besides, there's nothing in the knob that could make a sound.
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10-24-2022, 08:35 AM	#3
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	The gear knob is nothing more than a switch since the transmission controls are all electric, so as Billfitz said, the knob cannot be making any noise.
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10-24-2022, 09:25 AM	#4
MidtownMike Lieutenant 357 Rep 413 Posts Drives: BMW F30 LCI 320i M-Sport Shado Join Date: Nov 2021 Location: Netherlands iTrader: (0)	It's an auto transmission. This means that when you switch gears, the electronic module tells the gearbox to do mechanical things and things like actuators actually move. Are you sure the sound is not just coming from the auto transmission itself doing what automatic transmissions do? Can you also hear it if you are listening under the car when switching gears? You may want to check transmission oil level & quality.
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