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Any actually paid for warm start knock repair?

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Old 03-17-2018, 09:47 AM
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2009 Mercedes C300 Sport
Any actually paid for warm start knock repair?

I have a 2009 C300 with the infamous startup knock. My car has 66k and is immaculate, but it does have the warm start knock. It drives like a dream, and I would love to get this annoying sound gone. Has anyone actually paid to have it done and how much was it in the USA?
Old 03-17-2018, 10:11 AM
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2010 C-300 4Matic luxury
Originally Posted by DJRehab
I have a 2009 C300 with the infamous startup knock. My car has 66k and is immaculate, but it does have the warm start knock. It drives like a dream, and I would love to get this annoying sound gone. Has anyone actually paid to have it done and how much was it in the USA?
Hello, Doe's your car have the same knock sound on COLD start up ?? I have a 2010 with 70.000 miles and I have a knock sound on cold start up . It only doe's this every 20 or so times on cold start up.
Old 03-17-2018, 10:23 AM
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2009 Mercedes C300 Sport
Originally Posted by wizzel1
Hello, Doe's your car have the same knock sound on COLD start up ?? I have a 2010 with 70.000 miles and I have a knock sound on cold start up . It only doe's this every 20 or so times on cold start up.
Mine only does it after sitting 2-3 hours. In the morning it rarely does it, however it has made the sound occasionally on very warm mornings.
Old 03-17-2018, 10:28 AM
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2010 C-300 4Matic luxury
Do you know were the knock (sound) is coming from ?
Old 03-17-2018, 10:32 AM
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2009 Mercedes C300 Sport
It's a bearing issue. There are tons of threads about it on here, most people live with it as Mercedes claims it's normal. But I would love to get rid of the noise. I know it's costly, I would love to pay to have it repaired.
Old 03-19-2018, 08:56 AM
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A car
Anyone have a sound clip of this?

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