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Gavin Perry
Gavin Perry, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 2279
Experience:  Licensed diagnostic and repair technician
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I have a knocking noise when breaking on my Mercedes ML320

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I have a knocking noise when breaking on my Mercedes ML320 CDi. Noise is evident after driving a few miles and it comes from the front.
JA: Where exactly do you think the noise is coming from? And how long has this been going on?
Customer: Its coming from the front underneath and it started a few weeks after I bought it in February.
JA: What year is your ML320?
Customer: 11/2005
JA: Are you fixing your ML320 yourself? What have you tried so far?
Customer: I can't fix it and I would like someone to fix it.
JA: Anything else you want the Mechanic to know before I connect you?
Customer: The engine light is also on with code P2510-001 (2510-001) Check component Y77/1 (Boost pressure regulator)

Hi my name is ***** ***** it a single knock or is it a repeated knock.

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Customer: replied 1 year ago.
It is a single knock on each time I break