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STARTING AND DRIVING
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tions. E.g. when launching a boat on a trailer from
With manual transmission, the function works
• if a gear other than 1 or R is selected in
a ramp.
only on first gear and reverse gear.
manual gearshift mode on an automatic
gearbox.
With automatic transmission, gear 1 must be
WARNING
selected in manual gearshift mode (+S-), or R
This function can be switched off at any time. If
HDC does not work in all situations but is
must be selected. This is indicated by the number
the function is switched off while driving on a
designed merely as a supplementary aid.
1 or R in the combined instrument panel, see
steep downhill gradient, the braking effect will
Automatic gearbox - Geartronic* (p. 274).
gradually decrease.
The driver always bears ultimate responsibility
for ensuring that the vehicle is driven safely.
NOTE
NOTE
Function
HDC cannot be activated on an automatic
With HDC activated you may experience a
gearbox in position D.
delay between acceleration pedal activation
and engine response.
Operation
HDC allows the car to roll at a maximum of
Related information
10 km/h (6 mph) forwards with engine braking
•
All Wheel Drive (AWD)* (p. 289)
and 7 km/h (4 mph) backwards. However, any
•
Automatic gearbox - Geartronic* (p. 274)
speed within the gear's speed register can be
•
Manual gearbox (p. 273)
selected using the accelerator pedal. When the
accelerator pedal is released, the car is braked
quickly to 10 or 7 km/h (6 or 4 mph) respec-
tively, irrespective of the hill's gradient and with-
out the need for the foot brake.
HDC On/Off.
The brake lights come on automatically when the
HDC is activated or deactivated with one of the
function is operating. The driver can brake or stop
centre console's switches. The lamp within it illu-
the car at any time by using the footbrake.
minates when the function is activated.
HDC is deactivated:
When HDC is working normally the com-
bined instrument panel's symbol illumi-
• with the centre console's On/Off button
nates combined with the text message Hill
• if a gear other than 1 or R is selected on a
descent control ON.
manual gearbox
290
* Option/accessory.
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