rear bumber sticking out a bit




but it always pops back out again - this happes on both sides.
it's not a very huge deal, but can't say it's a very good finish either..
anyone else have the same problem ?
Last edited by Egonvdv; Jul 23, 2018 at 08:10 AM.
i recall you had a number of issues with brake vibrations - maybe MB didn't assemble the car properly after checking for issues ?
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So Vic could be right. But the info 're the w212 problem was interesting.
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So Vic could be right. But the info 're the w212 problem was interesting.




Has anyone found the solution to this on W213?





My 2017 CPO rear bumper corners were flexed outward in the exact same manner....dealer r&r bumper and re-alighned, It is better but not perfect.
These are large, thin plastic surfaces and I imagine they would distort due to excessive heat alone. Getting gently tapped is an equally possible factor as well, but I remember in London several years ago a particular hi-rise was acting as a 'tense' for the sunlight and several cars were damaged, Mirrors melted, bumper corners distorted distorted, etc. Just about any plastic surface was being damaged in particular parking spots during the day. City had to make no park zones,
More to the point, let me ask why we attempt to call flush fitting end panels ”bumpers”. This notion alone may well be the true problem! Think about it.
My best guess is that if the bumper cover is pushed ever so lightly in parking (by either vehicle) the corners can be poked out “ever so slightly”. It is possible to dismount the cover and tweak the mount points back into position.
A second possible contributing factor could be the cover comes off the tooling too quickly and distorts ever so slightly, leaving it pre-tensioned when mounted to the car. It would then create this pre-tension at installation, a stress factor that can be seen by the tips of the corners sticking out. Especially if just ‘touched’.
Not having seen the underlying parts myself, it is not possible for me to suppose a true picture of the situation...either or both explanations are equally likely. Occam’s Razor points to my “best guess” of a perfect fitting rear cover simply getting touched ever so gently at some point.
I can say, in being both American (since 1742) plus well immersed in German culture, speaking the language fluently, that I would hesitate to lay the problem to some preconceived notion of underlying cultural or corporate norms. Not an approach conducive to understanding or solutions, even when true.
In any event, it is a known issue and in my case was repaired free under warranty.




