95
SAFETY
DEVICES
CORRECT USE
OF THE
CAR
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
CAR
MAINTENANCE
TECHNICAL
SPECIFICATIONS
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 systemon/off fig. 97
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 Aset on
the dashboard fig. 97. 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.
It may be useful to switch the ASR when
driving on snow-covered roads with snow
chains fitted: in these conditions, slipping
of the wheels during pick-up provides bet-
ter traction.
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. 97
ASR
OFF
A
F0R0218m
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).
