Thanks Dave, I'll give that a peruse (at my leisure).Sadly I don't have time to type out "War and Peace" but Google produced this which will help explain what I was advisng :-
OBD2 Readiness Monitors are simple yet powerful self check routines. They provide insight to the car’s self-diagnostics. This post will explain in detail wha...www.obdautodoctor.com
Remember some Cars take longer number of Drive Cycles and Engine Off / On cycles than others, which may only require one
Every time you reset Fault Code(s) you also reset the Readiness Monitors which then needs the Drive Cycles
BTW, for once I agree with you @Christopher Goodwin
The way I often put it is this ....
"When someone buys a used Car they now own it and all its issues, together with the potential it had a cheap out previous owner that didn't maintain it properly
Well! That is some, straight talking, tough love.You bought an older used car and have only had it a week and are already upset because things have gone wrong? Bad move, sounds like you need a new car with a warranty and service loaner. But out the $60k for a new car and you won't need to worry about repairs and maintenance.
Not with regular Oil Changes Which comes back to previous owners that don't maintain CarsI guess Mercedes engines run dirty?
The Rocker Covers/Cam Covers/Valve Covers that were on mine originally, were spotless inside, as was the oil which is always a wonderful sight to beholdSo, this car did have a fairly good record of oil changes. Actually the PO did an oil change just before I bought it. I will keep an eye on how quickly the oil turns dirty. I have bought a set of hoses for the breathers and will get to cleaning them when I get the hoses. From what I read, over time, the breather hoses get brittle and crack.