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194 Driving and parking
Cruise control and limiter
Function of cruise control
Cruise control regulates the speed to the value
selected by the driver.
If you accelerate to overtake, for example, the
stored speed is not deleted. If you remove your
foot from the accelerator pedal after overtaking,
cruise control will resume speed regulation back
to the stored speed.
You can store any speed above 20 km/h up to
the maximum design speed or up to the set win‐
ter tyre limit.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nise dangers (
page 185).
/
Mercedes‑AMG vehicles: cruise control is avail‐
able up to a maximum speed of 250 km/h.
Displays on the multifunction display
h (grey): cruise control is selected but
R
not yet activated.
h (green): cruise control is active.
R
A stored speed appears along with the h dis‐
play.
%
The segments extending from the current
stored speed to the end of the scale, or to
the set winter tyre limit, light up in the
speedometer.
System limits
Cruise control may be unable to maintain the
stored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lower gear in good time on long
and steep downhill gradients. Take particular
note of this when driving a laden vehicle. By
doing so, you will make use of the engine's brak‐
ing effect. This relieves the load on the brake
system and prevents the brakes from overheat‐
ing and wearing too quickly.
Do not use cruise control in the following situa‐
tions:
In traffic situations which require frequent
R
changes of speed, e.g. in heavy traffic, on
winding roads.
Internal use only
On slippery roads. Accelerating can cause
R
the drive wheels to lose traction and the
vehicle could then skid.
If you are driving when visibility is poor.
R
Function of the limiter
The limiter restricts the speed of the vehicle. To
reduce the speed to the set speed, the limiter
applies the brakes automatically.
You can limit the speed as follows:
Variable: for a short-term speed restriction,
R
e.g. in built-up areas
Permanent: for a longer-term speed restric‐
R
tion, e.g. in winter tyre mode
You can store any speed above 20 km/h up to
the maximum design speed or up to the set win‐
ter tyre limit. You can also perform settings
while the vehicle is stationary if the vehicle has
been started.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nise dangers (
page 185).
/
Mercedes‑AMG vehicles: the limiter is available
up to a maximum speed of 250 km/h.
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