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991.2 GT3 Whirring Sound on Shutdown

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Old 10-06-2019, 03:10 PM
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Herby!
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Default 991.2 GT3 Whirring Sound on Shutdown

I've got a 2019 GT3 that I bought new 2 months ago, absolutely loving the car. No issues with it so far as I'm getting through the break-in. Have noticed one odd thing, and while I'm sure its normal, I have no idea what it is.

When the car is turned off I noticed for the next 10 seconds or so an electric motor/actuator sound from the rear of the car. It almost sounds like the spoiler retracting/extending on my 996. It happens on every shutdown, like a gate or valve is opening or closing.

Anyone know what this is?

Thanks
Old 10-06-2019, 04:25 PM
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BlueGT3
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Totally normal
Old 10-06-2019, 05:01 PM
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hashash
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Both my cars do it 😃
Old 10-06-2019, 07:14 PM
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MarcusG
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Could be an issue with the parking brake and sensor.
Old 10-06-2019, 08:27 PM
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Yea, I gathered it was normal, but does anyone know what it is?
Old 10-06-2019, 08:37 PM
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GrantG
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Originally Posted by Herby!
Yea, I gathered it was normal, but does anyone know what it is?
Is it always right after using the front axle lift?
Old 10-06-2019, 08:45 PM
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Not at all related to front axle lift. Its a sequence that occurs as soon at the engine is turned off. A series of clicks and electric motor whirs that happen in the same sequence every shut down.
Old 10-06-2019, 10:03 PM
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carbondan
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If you sit in the car long enough, you'll hear the Sport Chrono wind itself back up, might be related to that?
Old 10-06-2019, 10:27 PM
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Herby!
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I know what you mean about the sport chrono. This is different. Comes from the rear of the car immediately upon shutdown.
Old 10-06-2019, 10:38 PM
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Auxiliary fans in the back.
Old 10-06-2019, 11:35 PM
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Herby!
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Originally Posted by silvertige
Auxiliary fans in the back.
Do you know for certain this is the case, or are you making a guess?
Old 10-06-2019, 11:59 PM
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chance6
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My 2018 GT3 does same thing. Sometimes it sounds like the cooling fans in back. As an engineer it actually sounds normal to me. Car runs like a top.
Old 10-07-2019, 11:21 PM
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MarcusG
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Fans will run occasionally for a few seconds or even a min or two.

The FAL compressor will kick on after 3-4 uses when it's engaged but that's a buzzing up front. I was told by a service writer at the dealer to wait until it stops before turning the car off so the tank isn't half full and need to run twice. I use it almost every time I'm pulling up to a concrete parking stop and wait for it to top off before I shut the car off.

There are some loud clicks occasionally with the electric parking brake drivers side rear occasionally also. Even after the car is shut off.

I bet you're hearing the fans.
Old 10-07-2019, 11:50 PM
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silvertige
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Originally Posted by Herby!
Do you know for certain this is the case, or are you making a guess?

Well, I'm basing it on your description of it, so, no, I can't say for certain. But, I'm confident that's what you're hearing.
Old 10-08-2019, 11:22 AM
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Jimmy-D
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What is the temp where you are driving your car?


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