108GETTING TO KNOW YOUR CAR
VDC SYSTEM
(Vehicle Dynamics Control)
This is an electronic system that controls car stability in the event
of tyre grip loss.
The VDC system also includes the following systems:
❍Hill Holder
❍ASR
❍Brake Assist
❍MSR
❍CBC
❍“ELECTRONIC Q2” (“E-Q2”)
❍DST
SYSTEM INTERVENTION
This is indicated by the áwarning light flashing in the instru-
ment panel: this indicates that the vehicle is in critical stability
and tyre grip conditions.
SYSTEM ACTIVATION
The VDC system switches on automatically each time the engine
is started and cannot be switched off.
HILL HOLDER SYSTEM
This system is an integral part of the VDC system and it is provided
to facilitate starting on slopes.
It is activated automatically in the following instances:
❍uphill: car at a standstill on a road with a gradient higher than
5%, engine running, clutch and brake pedal pressed, gearbox
to neutral or engaged gear other than reverse;
❍downhill: car at a standstill on a road with a gradient higher
than 5%, engine running, clutch and brake pedal pressed and
reverse gear engaged.
At take-off the VDC system control unit will keep brake force on
the wheels until reaching the torque suitable for starting, or in
any case for 1 second in order to move easily from the brake ped-
al to the accelerator pedal.
If the vehicle has not departed after this time, the system will de-
activate automatically by gradually releasing the brake force. A
sound may be heard during this stage: this indicates that the ve-
hicle is about to move off.
IMPORTANT the Hill Holder system should not be used as a hand-
brake. Do not leave the vehicle without having engaged the hand-
brake, switched off the engine and engaged a gear.
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110GETTING TO KNOW YOUR CAR
BRAKE ASSIST
(emergency braking assistance)
This system, which cannot be excluded, recognises emergency brak-
ing (on the basis of the brake pedal operation speed) and allows
the braking system to react more quickly. The Brake Assist function
is deactivated in the event of VDC system failure.
MSR SYSTEM
This is an integral part of the ASR system which, in the event of
sudden gear downshifting, cuts in, providing torque to the engine
thus preventing excessive drive wheel drag which, specially in poor
grip conditions, can lead to loss of stability.
CBC SYSTEM
This function optimises the brake force distribution between the
four wheels (in order to make maximum use of the available grip)
when braking whilst cornering and the ABS system cuts in. This
improves stopping distances and above all vehicle stability when
cornering.
“ELECTRONIC Q2” SYSTEM (“E-Q2”)
The “Electronic Q2” system uses the braking system to create an
effect similar to a limited slip differential.
The front braking circuit, when accelerating around a corner, acts
on the inside wheel to increase the drive to the outside wheel (in-
creased load), dynamically and continuously distributing the torque
between the front drive wheels according to driving and road con-
ditions.
The system, combined with Mc Pherson front suspension, allows
for particularly effective and sporty driving.
DST SYSTEM (Dynamic Steering Torque)
This is an “active” vehicle control system. On road surfaces with
poor grip, it automatically corrects the steering and also controls
over-steer. This system applies torque to the steering wheel to in-
crease the feeling of safety, helping to keep the vehicle under
control and making the effects of the VDC system more discreet.
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