Cruise Control; Cruise Control Activation Conditions; Storing, Maintaining And Calling Up A Speed - Mercedes-Benz GLA Operator's Manual

Driving systems
172
Driving systems

Cruise control

General notes
Cruise control maintains a constant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select a low gear in
good time. For this, you will need to have
selected manual drive program M
( page 154). By doing so, you will make use
Y
of the braking effect of the engine. This
relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a
steady speed for a prolonged period. You can
store any road speed above 20 mph
(30 km/h).
Important safety notes
If you fail to adapt your driving style, cruise
control can neither reduce the risk of an acci-
dent nor override the laws of physics. Cruise
control cannot take into account the road,
traffic and weather conditions. Cruise control
is only an aid. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed,
for braking in good time and for staying in
your lane.
Do not use cruise control:
in road and traffic conditions which do not
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allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
on slippery road surfaces. Braking or accel-
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erating could cause the drive wheels to lose
traction and the vehicle could then skid
when there is poor visibility, e.g. due to fog,
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heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
To activate or increase speed
:
To activate or reduce speed
;
To deactivate cruise control
=
To activate at the current speed/last
?
stored speed
When you activate cruise control, the stored
speed is shown in the multifunction display
for five seconds.
Activation conditions
To activate cruise control, all of the following
activation conditions must be fulfilled:
the electric parking brake must be
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released.
you are driving faster than 20 mph
R
(30 km/h).
®
ESP must be active, but not intervening.
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on vehicles with automatic transmission,
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the selector lever must be in position D.
Storing, maintaining and calling up a
speed
Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).