Sounds like dentist drill in engine bay after hard drives!?
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W204 C63
Sounds like dentist drill in engine bay after hard drives!?
Hi, recently discovered a sound that seems very out of place when I’ve been driving. It’s only after a couple hard pulls and spirited driving.
The video is from yesterday, it’s the second time it’s happened and it’s the last two times it’s been driven hard. Today I drove to work and back with no issues and the sound never occurred.
The video is from yesterday, it’s the second time it’s happened and it’s the last two times it’s been driven hard. Today I drove to work and back with no issues and the sound never occurred.
Last edited by Trester; Mar 20, 2021 at 12:34 PM.
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
If memory serves that sounds like the aux oil cooler fan. Next time when it comes on find out what the oil temperature is and if the sound is coming from the front passenger wheel well (on a LHD car).
Thread Starter
Newbie
Joined: Mar 2021
Posts: 9
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W204 C63
I’ve been driving the car and everything’s seem fine but the sound occurs every time it’s driven a little hard. It seems like it’s coming from the front of the engine and to me it sounds like air leaking out.
Last edited by Trester; Mar 31, 2021 at 11:23 AM.
MBWorld Fanatic!
Joined: Jan 2013
Posts: 3,745
Likes: 811
From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
When the oil temp goes above 107 C the aux oil cooler fan kicks in until the oil temp drops below 107 C. It sounds exactly like the sound in your videos. The fan and radiator are located at the front bottom left and vent into the front passenger wheel well. It is perfectly normal. Next time let the car idle for a bit and it will go off when the oil temp drops below 107 C.
