W205 C250 Software updates ??

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Scooby_Doo

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Macan S
As per post "from a purr to a growl" booked my car in to MB to have a check over and was told that there were two software updates outstanding , anybody else with a W205 been advised of these updates. One of them is a "knock sensor" update. I did ask if they were anything to do with the emissions problems but was told that the car should run better after the updates.
 
As per post "from a purr to a growl" booked my car in to MB to have a check over and was told that there were two software updates outstanding , anybody else with a W205 been advised of these updates. One of them is a "knock sensor" update. I did ask if they were anything to do with the emissions problems but was told that the car should run better after the updates.
Your update was probably to the NOX Sensor software. These have been a consistent problem on these engines from day 1 and yes, it has to do with emissions control. Mine had the update and was OK after, with nothing adverse that I could detect.

Ernie
 

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