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Operation
Start assist systems
Intr
oduction
WARNING
The intelligent technology in the start assist
syst
ems cannot change the laws of physics.
The improved comfort provided by start as-
sist systems should not prompt you to take
risks.
●
Unintentional movements of the vehicle
could cause serious injury.
●
The start assist systems are not a replace-
ment for driver awareness.
●
Always try to adapt the speed of the vehi-
cle and your style of driving to the condition
of the ground or the road and to weather and
traffic conditions.
●
The start assist system cannot keep the ve-
hicle stationary in all conditions on a gradi-
ent or cause it to brake on steep downhill
gradients, e.g. if the road is slippery or icy.
Auto Hold function*
Fig. 205 Detailed view of the centre console:
Aut
o Ho
l
d button
The control lamp on the button switches on
when the Aut
o Ho
l
d function is on.
When the Auto Hold function is on, this helps
the driver if they must regularly stop the vehi-
cle or if they must stop with the engine run-
ning for prolonged periods, for example, on
hills, before a traffic light or in traffic jams
with continuous stopping and starting.
The Auto Hold function automatically pre-
vents the vehicle from rolling away acciden-
tally when at a standstill, without the driver
having to keep his/her foot on the brake ped-
al.
When the system that detects that the vehi-
cle has stopped, the Auto Hold keeps the ve-
hicle at a standstill. The brake pedal can be
released.
If the driver presses the brake pedal briefly or
the accelerator to start off, the Auto Hold
function releases the brake once more. The
vehicle moves according to the gradient.
If any of the conditions necessary for the Au-
to Hold function change while the vehicle
stopped, the system is turned off as is the in-
dicator on the button ››› Fig. 205. The elec-
tronic parking brake engages where necessa-
ry to park the vehicle safely ›››
.
C
ondition
s
for keeping the vehicle at a
standstill with Auto Hold:
●
The driver door must be closed.
●
The driver seat belt must be buckled.
●
The engine must be running.
●
The ASR system is switched on
››› page 188.
Automatically engaging and disengaging the
Auto Hold function
If the Auto Hold function was engaged with
the
AUTO HOLD
button before disengaging the
ignition, the f
u
nction w
ill automatically re-
main engaged after the ignition is re-engag-
ed.
If the Auto Hold function was not engaged, it
will automatically remain disengaged after
the ignition is engaged.
208
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