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Was this a main dealer or or independent car dealership warranty ?
My main dealer warranty doesn't cover coolant leak / loss ( I've a well documented leak from the M157) and I've been far from impressed with any experience with MB...
What cooling issue on the M157 or do you mean the cars pre split cooling?
I have had to top up the expansion tank 3-4 times in the last year with it failing a pressure test.
The leak is from the turbo coolant pipes that enter the block beneath the water pump. Coolant crystals are visible and this appears to have been happening for some time.
Not yet sure if it is leaking o-ring or micro crack in the plastic components.
There is no shortage of evidence regarding the problems with these plastic cooling components on the M157 but more commonly they break up on higher milage cars.
I think it's a bit shit that a coolant leak is not covered as part of the MB coverage, no mind an engine that has has 26k and been 'looked' after by MB throughout.
In fact the longer this goes on, the more I'm beginning to regret paying the premium from buying from MB as the hassle of going back and forth just takes much time, with no results.
I've written to MB about this as well as the leaking cam covers but against my wishes it is going back to the supplying dealer this week for them to look at it.
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