77
SAFETY
STARTING
AND DRIVING
WARNING
LIGHTS AND
MESSAGES
IN AN
EMERGENCY
SERVICE
AND CARE
TECHNICAL
SPECIFICATIONS
INDEX
CONTROLS
AND DEVICES
MSR system
(engine braking regulation)
This is an integral part of the ASR system
that, in case of sudden gear shifting, cuts
in to provide torque to the engine, thus
preventing excessive driving wheel drag
that, especially 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 by pressing buttonAlo-
cated on the dashboardfig. 97.If the system is off, the LED on the button
lights up together with a message shown
on the multifunction display (for versions/
markets, 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, the
driving wheels skidding when moving off
makes it possible to get better traction.
For the correct operation of
the ESP and ASR systems,
the tyres must be the same make and
type on all wheels, in perfect condi-
tion and, above all, of the type, make
and size recommended.
WARNING
fig. 97
ASR
OFF
F0M0109m
ASR SYSTEM (Anti-slip Regulator)
This function controls car drive and cuts
in automatically every time one or both
driving wheels skid.
Depending on how skiddy the road is,
two different control systems are acti-
vated:
❒if the skidding involves both drive
wheels, the ASR function intervenes
by reducing the power transmitted by
the engine;
❒if the skidding involves only one dri-
ving wheel, the ASR system cuts in by
automatically braking the wheel that
is sliding.
The ASR system is particularly helpful in
the following circumstances:
❒skidding of the inner wheel when cor-
nering due to the effect of dynamic
load changes or excessive acceleration;
❒too much power transmitted to the
wheels in relation to the conditions of
the road surface;
❒acceleration on slippery, snowy or
icy surfaces;
❒loss of grip on a wet surface (aqua-
planing).
072-092 ACTUAL 1ed EN 26-07-2010 10:55 Pagina 77
