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Cls63 common issues

 
Old 04-12-2019, 12:18 PM
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Cls63 common issues

Hey guys, the ELW warranty on my 12 cls63 is about to end soon, what are some common engine issues with the cls63? What could I tell the MB dealer to have them check out the car free of charge? The car is currently being serviced for an oil leak to the engine harness.

Issues that I read are common is a stretched timing chain, cylinder scoring to cylinders 1 and 5 due to proximity to turbos, and a seized low pressure fuel pump. How could I get them to check out these issues?

Thank you
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Old 04-14-2019, 01:27 PM
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Greetings 777, I'm in the same boat as you, or...er.....car rather and my car has been rock solid........knock on wood? But being out of ELW does make me think twice before romping on it. Interesting about the cylinder scoring near turbos. I hope to keep tuned into this thread for other members to share more.
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Old 04-24-2019, 12:13 AM
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Oil leak in engine harness is a common issue its caused from leaky cam position sensors. Other problems that have arisen lately since the motors are getting some real miles on them are stretched timing chains in the 2012 models ( this can be fixed with a revised chain and check valve) Also some M157's are having issues burning valves It is thought that the excessive heat from the turbos causes this. Those are the major things I am aware of.
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Old 05-16-2019, 09:08 AM
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Originally Posted by LaunchPad View Post
Oil leak in engine harness is a common issue its caused from leaky cam position sensors. Other problems that have arisen lately since the motors are getting some real miles on them are stretched timing chains in the 2012 models ( this can be fixed with a revised chain and check valve) Also some M157's are having issues burning valves It is thought that the excessive heat from the turbos causes this. Those are the major things I am aware of.
What is the cost generally to fix the oil leak in the harness? Is the timing chain issue resolved after 2012? TIA!
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