ML63 AMG (W166) 2011 -2015 (Replaced by GLE63)

Sound while starting the car ML 400 Model 2015

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Old Mar 10, 2026 | 05:34 PM
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Sound while starting the car ML 400 Model 2015

Hello
I have ML 400 Model 2015, The car while starting it gives noisy sound which lasts for 2 to 3 Seconds Max then disappear
do any one know why is that happening and who to fix it, my mechanic tried to check it but the car has to cool down to appear
I have attached Video showing the sound
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File Type: mov
Video.mov (1.49 MB, 4 views)
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Old Mar 11, 2026 | 04:53 AM
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Originally Posted by S.e123456789
Hello
I have ML 400 Model 2015, The car while starting it gives noisy sound which lasts for 2 to 3 Seconds Max then disappear
do any one know why is that happening and who to fix it, my mechanic tried to check it but the car has to cool down to appear
I have attached Video showing the sound
How long since it’s had an oil change, milage and service history. Sounds like noisy timing chain.
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Old Mar 11, 2026 | 08:05 AM
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Exactly. It's just those tensioners losing pressure when the engine sits. Cold start makes it happen every time. Get them sorted before it starts jumping timing.
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Old Mar 11, 2026 | 08:09 AM
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Originally Posted by Alexie
Exactly. It's just those tensioners losing pressure when the engine sits. Cold start makes it happen every time. Get them sorted before it starts jumping timing.
———————————————————
how to get this sorted, it was supposed to be done
if you can share photo for the impacted part or the one which need modification plz share
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Old Mar 11, 2026 | 08:11 AM
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Originally Posted by Mattml430
How long since it’s had an oil change, milage and service history. Sounds like noisy timing chain.
———————
just couple of days changed oils but this sounds long time back
despite the mechanic done some work rods it still having sound

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