Originally Posted By: Ethan1
DON'T throw any more parts darts at this car. You haven't said anything yet about monitoring fuel trims, reading fuel pressures digitally or physically, et cetera. What you're doing is not diagnosis. It's parts darts. Take it to a dealer or a Euro shop for a diagnosis. They'll tell you what's wrong with it and you can then decide if it's a repair you want to tackle
I second this, these new GDI systems are complex and beyond the ability of most DIYers unless they have the time to study how the system works. If your part of Iowa requires a smog check within the 8/80 federal emissions performance warranty, Mercedes is required by law to warranty parts that are covered under that scope which failed inspection. This may not apply in your case,
Originally Posted By: MBUSA
NOTE: The Emission Performance Warranty
is required by Federal Law, and is
effective only to the extent required by
that law. To the extent the underlying
law is suspended or amended, this
Warranty is automatically altered in
the same manner, without further notice.
Mercedes-Benz USA, LLC (MBUSA) warrants
to the original and each subsequent
owner of a new Mercedes-Benz vehicle
that:
a. if the vehicle is maintained and operated
in accordance with MBUSA’s written
instructions for required maintenance and
use, and
b. if the vehicle fails to conform at any
time during 8 years or 80,000 miles,
whichever first occurs, to the applicable
emission standards as ascertained by an
EPA-approved emission short test, and
c. if such non-conformity results or will result
in the vehicle owner having to bear
any penalty or other sanction (including
the denial of the right to use the vehicle)
under local, State or Federal law, then any
authorized Mercedes-Benz Center during
the first 24 months or 24,000 miles will
make any repairs or replacements necessary
to specified systems/components to
correct the non-conformity or so that the
vehicle will pass the smog check test at
no charge for parts and labor (including diagnosis).
For the remainder of the 8 years or
80,000 miles the authorized MercedesBenz
Center will correct only those deficiencies
directly related to the specified
components in the attached list which
have been installed in or on the vehicle for
the sole or primary purpose of reducing
vehicle emissions and that were not in
general use prior to Model Year 1968.
II. Fuel Metering System
Fuel Filter (with Integrated Pressure Regulator)
Fuel Injector
Fuel Management System
Fuel Pressure Regulator
Fuel Pressure Sensor
Fuel System Control Module
High Pressure Pump
Injection Valve
Throttle
The warranty booket is here:
http://assets.mbusa.com/vcm/CAC_RAPMD/13serviceandwarrantybooklet.pdf
