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178 Driver assist systems ›
goes out when deactivated.
Troubleshooting
ESC or ASR faulty/deactivated by the system
illuminates
›
Stop the engine and start again.
›
If the warning light does not go out after covering
a short distance, seek the help of a specialist ga-
rage.
ABS faulty
illuminates
›
You may continue driving, exercising appro-
priate caution. Get the help of a specialist compa-
ny.
Brake system and anti-lock braking system faulty
illuminates together with
›
Stop driving! Get the help of a specialist
company.
Front Assist
Functionality
Front Assist monitors the distance to the vehicle
ahead and points out when the safety distance is ex-
ceeded. In borderline situations, it helps to avoid a
collision by braking interventions.
Status display in the instrument cluster display
illuminates - safety distance too small
or
illuminates - warning in case of collision
Automatic braking in the event of a collision
If there is a risk of collision, the symbol lights up as a
warning
or
from the isolation box. If you do
not respond to the warning, the vehicle will slow
down.
At a driving speed of up to 30 km / h, the vehicle is
braked without prior warning.
The automatic braking can be stopped by pressing
the accelerator pedal or by steering.
With automatic braking, the pressure in the brake
system increases. The brake pedal cannot be operat-
ed by using the pedal as normal.
WARNING
Risk of accident!
Front Assist does not respond to crossing or oncom-
ing vehicles.
Front Assist
Operating conditions
✓ ASR activated.
✓ The driving speed is higher than 5 km/h.
Functional restriction
The function may be restricted or unavailable in the
following cases.
About 30 seconds after starting. Lights up in the
▶
instrument cluster
.
When driving through a sharp bend.
▶
During an ESC intervention.
▶
Settings
Automatic activation
Front Assist is automatically activated when the igni-
tion is switched on.
Activation / deactivation in the instrument cluster
›
Press
the button on the multifunction steering
wheel.
›
Select Front Assist .
Activation / deactivation and setting in Infotain-
ment
In the menu:
Show system deactivation in the display of the in-
strument cluster
illuminates together with
or
illuminates together with
Deactivate Front Assist when handling the vehi-
cle on a truck, a car ferry etc.
Troubleshooting
Front Assist is not available
illuminates together with
Or:
illuminates together with
›
Clean the front radar sensor.
›
Stop the engine and start again.
›
If Front Assist is still unavailable, check the brake
lights on the vehicle or on the attached trailer.
›
Replace the defective bulb.
›
If the brake lights are working and Front Assist is
still unavailable, seek the help of a specialist ga-
rage.
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