The following conditions may lead the
ACC not to react:
If the accelerator is pressed.
●
If there is no gear engaged.
●
If the ESC is controlling.
●
If the driver is not wearing his/her seat belt.
●
If several brake lights of the vehicle or elec-
●
trically connected trailer are damaged.
If the vehicle is reversing.
●
Driving faster than 210 km/h (130 mph).
●
Driver messages
ACC not available
The system cannot continue to guarantee
●
safe vehicle detection and is deactivated.
The sensor has lost its setting or is damaged.
Take the vehicle to a specialised workshop
and have the fault repaired.
ACC and Front Assist: currently
not available. No sensor vision
This message is displayed if the radar sen-
●
sor's visibility is impaired by leaves, snow,
dense fog or dirt. Clean the sensor
›››
Fig.
264.
ACC: currently not available.
Gradient too steep
The maximum road slope has been excee-
●
ded, hence safe ACC operation cannot be
282
Driving
guaranteed. The ACC cannot be switched
on.
ACC: only available in D, S or M
Select the D/S or M position on the selector
●
lever.
ACC: parking brake applied
The ACC is deactivated if the parking brake
●
is applied. The ACC is available once again
after the parking brake is released.
ACC: currently not available. In-
tervention of stability control
The indication is displayed when the elec-
●
tronic stability control (ESC) intervenes. In this
case, the ACC is automatically switched off.
ACC: Take action!
The indication is displayed if, when the ve-
●
hicle starts up on a hill with a slight slope, the
vehicle rolls back even although the ACC is
activated. Apply the brake to stop the vehicle
from moving/colliding with another vehicle.
ACC: speed limit
The indication is displayed in vehicles with
●
manual gearboxes if the current speed is too
low for the ACC mode. The speed limiter
switches off if the speed falls below 20 km/h
(12 mph).
ACC: available as of the 2nd gear
The ACC is operational as of the 2nd gear
●
(manual gearbox).
ACC: engine speed
This indication is displayed if, when the
●
ACC accelerates or brakes, the driver does
not shift up or down a gear in time, which
means exceeding or not reaching the permit-
ted RPM. The ACC switches itself off. A buzzer
warning is heard.
ACC: clutch applied
Vehicles with manual transmission: pressing
●
the clutch pedal for longer exits cruise con-
trol.
Door open
Vehicles with automatic transmission: the
●
ACC cannot be activated with the vehicle
stationary and the door open.
WARNING
There is a danger of rear collision when the
distance to the vehicle in front is reduced
and the speed difference between both ve-
hicles is so great that a speed reduction by
the ACC is not sufficient. In this case, brake
immediately!
The ACC may not be able to detect all
●
situations properly.
Stepping on the accelerator may cause
●
the ACC not to intervene in braking. Driver