Under the Hood
The ML350 carries a 232-hp, 3.7-liter V-6 engine, while the ML500 comes with a 288-hp, 5.0-liter V-8. Both models use a five-speed-automatic transmission with a manual shift gate. The permanently engaged four-wheel-drive system has a Low-range gear setting, and it distributes power among the four wheels as needed to maintain traction. Unlike its X5 and RX 330 rivals, Mercedes insists that the M-Class is a true offroad vehicle.
See also:
Problems with the SmartKey
Problem
Possible causes/consequences and
Solutions
You cannot lock or unlock the vehicle using
the SmartKey.
The SmartKey battery is discharged or nearly discharged.
...
Safety systems
Display messages
Possible causes/consequences and
Solutions
Risk of accidentABS (Anti-lock Braking System), ESP®
(Electronic Stability Program), BAS (Brake Assist), PRE ...
Setting the airflow
Turn the SmartKey to position 2 in the ignition lock.
To increase/reduce: press the
or
button.
...