Radiator
Vehicles with a diesel engine: do not cover the radiator, for example with a winter front or bug cover. Otherwise, the readings of the on-board-diagnostic system may be inaccurate. Some of these readings are required by law and must be accurate at all times.
See also:
Numerous stowage facilities, high degree of variability and
temperature-controlled cup holder
Numerous, easily accessible stowage facilities in the M-Class can accommodate
bottles, mugs, keys, coins and much more. Each of the four doors can also easily
accommodate a large 1-litre bottle.
...
Increasing the volume
In some cases, the volume of the AUX device
may be quieter or louder, or the usual
maximum possible volume cannot be
reached. On some devices, it is possible to
adjust the volume separately. I ...
Resetting triggered NECK-PRO head restraints
WARNING
For safety reasons, have the NECK-PRO head restraints checked at an authorized
Mercedes-Benz Center after a rear-end collision.
WARNING
When pushing back the NECK-PRO head restr ...