FIAT Grande Punto Actual User Manual

Page 96

SAFETY DEVICES

CORRECT USE OF THE CAR

ARNING

LIGHTS AND MESSAGES

IN AN

EMERGENCY

CAR

MAINTENANCE

TECHNICAL

SPECIFICA

TIONS

INDEX

DASHBOARD AND CONTROLS

MSR system (engine braking
torque control)

It is an integral part of the ASR system that
in case of sudden gear shifting, cuts in pro-
viding torque to the engine thus prevent-
ing excessive driving wheel drive that, spe-
cially in poor grip conditions, can lead to
loss of stability.

Switching the system on/off fig. 113
The ASR system switches on automatically
each time the engine is started.

When travelling, the ASR can be switched
off and on again pressing button A set on
the dashboard fig. 113.
When the ASR is switched off this is
shown by the lighting up of the led on the
button and by relevant message on the
multifunction display, where provided.

If the ASR is switched off when travelling,
it will turn on again automatically the next
time the engine is started.

When travelling on snowy roads with
snow chains, it may be helpful to turn the
ASR off: in fact, in these conditions, slip-
ping of the driving wheels when moving off
makes it possible to obtain better drive.

For correct operation of the
ESP and ASR systems, the

tyres must absolutely be of the same
brand and type on all wheels, in per-
fect conditions and, above all, of
type, brand and size specified.

WARNING

fig. 113

ASR

OFF

F0M0109m

ASR SYSTEM (Antislip Regulator)

The ASR function controls car drive and
cuts in automatically every time one or
both driving wheels slip.

According to slipping conditions, two dif-
ferent control systems are activated:
❒ if slipping involves both driving wheels,

the ASR function intervenes reducing
the power transmitted by the engine;

❒ if the slipping involves only one driving

wheel, the ASR system cuts in auto-
matically braking the wheel that is slip-
ping.

The action of the ASR is particularly help-
ful in the following circumstances:
❒ slipping of the inner wheel due to the

effect of dynamic load changes or ex-
cessive acceleration;

❒ too much power transmitted to the

wheels also in relation to the conditions
of the road surface;

❒ acceleration on slippery, snowy or

frozen surfaces;

❒ in the case of loss of grip on a wet sur-

face (aquaplaning).