Bmw 420d noise after turning engine off?

Squibby1996 · 07-23-2019, 11:22 AM

Hi guys recently bought a 420d manual, all is good so far apart from I just noticed yesterday that when I turn the engine off a couple seconds after there is this strange noise? Don't think it's allways done it but can hear it when the door is open and engine switched off sometimes lasts longer than others. This is the noise

kdog_x · 07-23-2019, 05:59 PM

I don't know what it is, but that is normal. My car has always done it as well. Maybe someone else knows the source. Sounds like a stepper motor closing a flap or something.

Enabled · 07-23-2019, 08:07 PM

I believe that is the electric throttle body.
Later updates to the engine ecu change that sound to a slow tick tick tick, as it is closing slower.

Have your ecu updated to a later version.

Squibby1996 · 07-24-2019, 01:48 AM

Quote:

Originally Posted by kdog_x

I don't know what it is, but that is normal. My car has always done it as well. Maybe someone else knows the source. Sounds like a stepper motor closing a flap or something.

Quote:

Originally Posted by Enabled

I believe that is the electric throttle body.
Later updates to the engine ecu change that sound to a slow tick tick tick, as it is closing slower.

Have your ecu updated to a later version.

Ah ok thanks guys thought it would be but just never heard it

07-23-2019, 11:22 AM	#1
Squibby1996 Second Lieutenant 70 Rep 208 Posts Drives: BMW F36 440i Join Date: Aug 2018 Location: Somerset iTrader: (0)	Hi guys recently bought a 420d manual, all is good so far apart from I just noticed yesterday that when I turn the engine off a couple seconds after there is this strange noise? Don't think it's allways done it but can hear it when the door is open and engine switched off sometimes lasts longer than others. This is the noise
	Appreciate 0 Tweet Quote

07-23-2019, 05:59 PM	#2
kdog_x First Lieutenant 197 Rep 368 Posts Drives: 14 328d Join Date: Nov 2016 Location: Chicago iTrader: (0)	I don't know what it is, but that is normal. My car has always done it as well. Maybe someone else knows the source. Sounds like a stepper motor closing a flap or something.
	Appreciate 0 Quote

07-23-2019, 08:07 PM	#3
Enabled Lieutenant Colonel 1406 Rep 1,797 Posts Drives: 328xd Wagon, M2 Competition Join Date: Jun 2018 Location: Houston iTrader: (0)	I believe that is the electric throttle body. Later updates to the engine ecu change that sound to a slow tick tick tick, as it is closing slower. Have your ecu updated to a later version. __________________ -2014 328d Wagon, 8HP. Self-tuned, 270hp/430ft-lbs. -2019 M2 Competition MT, Alpine White. Self-tuned 560hp -2016 Mini Cooper S, MT. Many plans. Others: -E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe.
	Appreciate 0 Quote