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– The system compensates for undesired lateral<br />
vehicle reactions when the driver releases the<br />
accelerator pedal or brakes when cornering.<br />
This compensation functions up to the<br />
maximum lateral acceleration.<br />
– PSM actively stabilizes the vehicle as required<br />
during dynamic driving maneuvers (e.g. rapid<br />
steering movements, during lane changes or<br />
on alternating bends).<br />
– Improved braking stability on bends and on<br />
different or varying road surfaces.<br />
– It improves braking function and shortens<br />
stopping distance in the event of emergency<br />
braking.<br />
Readiness for operation<br />
PSM is switched on automatically every time you<br />
start the engine.<br />
PSM should always be switched on during<br />
“normal” driving.<br />
However, it may be advantageous to switch off<br />
PSM temporarily in exceptional situations, for<br />
example:<br />
– On a loose surface or in deep snow,<br />
– When “rocking” the vehicle free and<br />
– When using snow chains.<br />
64 Operation, Safety<br />
Switching off PSM<br />
f Press PSM OFF button.<br />
PSM is switched off after a short delay.<br />
The light-emitting diode in the button is lit up.<br />
When the PSM is switched off, the PSM multifunctional<br />
light on the instrument panel is lit<br />
and a message is shown on the on-board<br />
computer.<br />
An acoustic signal also sounds.<br />
Note<br />
When PSM is switched off, the additional braking<br />
functions are deactivated. Automatic reactivation<br />
in emergency situations is linked to the PSM<br />
control.<br />
The following functions stabilize the vehicle in<br />
emergency situations, even with PSM switched<br />
off:<br />
– When PSM is off, the vehicle is stabilized as<br />
soon as one of the two front wheels enters the<br />
ABS control range.<br />
– When PSM is off and Sport mode is on, the<br />
vehicle is stabilized as soon as both front<br />
wheels enter the ABS control range.<br />
One-sided spinning of the wheels is prevented,<br />
even with PSM switched off.<br />
Switching PSM back on<br />
f Press PSM OFF button.<br />
PSM is switched on after a short delay.<br />
The light-emitting diode in the button and the<br />
PSM multifunctional light on the instrument<br />
panel go out.<br />
The on-board computer shows a message.