What a nightmare. My local dealership has been decent about attending to
basically the same issues. The worst thing that ever happened to me was a
check engine light and decreased fuel economy when two air charge hoses had
cracked. That cost about $900 to repair. The emissions-related recalls and
the replacement of the def blue heater element we're both handled under
warranty from Mercedes of North America.
On Tue, Nov 9, 2021, 10:30 PM Randy Bennell via Mercedes <
mercedes@okiebenz.com> wrote:
> The fellow I referred to has a 2014 GLK250 that is causing him grief. He
> bought it new and it has only 120K Kilometers on it so around 75K miles.
>
> He has had 2 NOX sensors and the DEF pump and heater replaced. The
> dealer says it needs a DPF but none are available.
>
> The DPF will be under warranty but apparently the NOX sensors and DEF
> pump and heater are not and they are expensive.
>
> There is also an issue with the SCR (catalytic converter).
>
> It apparently sprays too much DEF under acceleration and the stuff
> puddles in the SCR. It ultimately burns off and mucks up the NOX
> sensors. It blows white smoke out the back when it burns off the DEF.
>
> They have looked inside the SCR and say it is falling apart internally
> and some of the material from it is coating the NOX sensors.
>
> They did a DPF regeneration and a week later there is a code saying it
> is almost plugged again.
>
> He is not a happy camper. The dealer has not been able to resolve the
> issues so far.
>
> Randy
>
> On 11/9/2021 4:43 PM, Andrew Strasfogel via Mercedes wrote:
> > What model/year diesel does your friend drive, Randy? I've had no such
> > problems with my 2014 GLK 250 Bluetec SUV.
> >
> > On Tue, Nov 9, 2021 at 5:30 PM Randy Bennell via Mercedes <
> > mercedes@okiebenz.com> wrote:
> >
> >> Blasphemy maybe, but I would suggest that you enjoy old Mercedes as fun
> >> rides and acquire something else that is new or relatively new for your
> >> tour of the country. The new Mercedes do not seem to have the same level
> >> of quality as they once did. A fellow on another list that I read has a
> >> fairly late model Mercedes SUV with the diesel and is experiencing a lot
> >> of problems. The dealer is unable to repair it because no parts are
> >> available. He is rather depressed by the whole issue as he thought he
> >> was buying long term reliability.
> >>
> >> Randy
> >>
> >>
> >>
>
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