Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that
on certain Model Year (â??MYâ??) 2013-2016 E/GLK/GLE/M-Class vehicles, the software for the
water pump diagnostics may not correspond to current specifications. This issue has an
extremely low rate of occurrence in the field and has no known emissions or fuel economy
impact. However, in the rare instance this issue does occur in a vehicle, it may prevent the
vehicle from passing certain state inspection requirements (e.g., California SMOG check).
What Weâ??re Doing MBUSA will conduct an Emission Service Campaign in which an authorized Mercedes-Benz
dealer will update the software for the water pump diagnostics on the affected vehicles.
