High outside temperatures
If DEF heats up to over 122 °F (50 °C) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result.
WARNING
When opening the filler cap of the DEF tank
ammonia gas vapors may escape. Refill DEF
in a well ventilated area only. Ammonia gas
vapors have a pungent odor and are
particularly irritating for your skin, mucous
membranes, and eyes. Inhaling ammonia gas
vapors will cause burning eyes, nose, and
throat, as well as coughing and watering eyes.
See also:
Folding the rear bench seat forwards
If the driver's or front-passenger seat is
set for a larger person, it may not be
possible to fold the rear bench seat
forwards. In this case, move the front seats
as far forward as possible.
...
Deactivating cruise control
There are several ways to deactivate cruise control:
Briefly press the cruise control
lever forwards 3.
or
Brake.
Cruise control is automatically deactivated if:
• you depress the parking bra ...
System self-test
After you have switched on the ignition, the
system carries out a self-diagnosis.
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
• the in ...