Seat toledo Owner's Manual page 151

How t t he A A BS* s s ystem w w orks
An automatic check is made when a
speed of approx. 6 km/h is reached.
When this happens a pumping noise can
be heard.
When the turning speed of a wheel
reaches a level which is too low for the
vehicle speed and it tends to lock, the
brake pressure to this wheel is reduced.
On the front axle the brake pressure is
regulated for each wheel individually,
whereas on the rear axle, the pressure is
regulated for both wheels at the same
time. As a result the braking effect is the
same for both rear wheels and the driving
stability is retained as far as possible.
This r r egulating p p rocess m m akes i i tself
known b b y m m ovement o o f t t he b b rake
pedal a a nd i i s a a ccompanied b b y n n oises.
This is done deliberately as a warning to
the driver that a wheel or the wheels are
in the locking range. So t t hat t t he A A BS
can r r egulate e e ffectively i i n t t his r r ange
the b b rake p p edal
depressed – – o o n n n o a a ccount s s hould i i t
be p p umped!
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TIPS AND MAINTENANCE
Warning
However t t he A A BS s s ystem c c annot
overcome t t he p p hysical l l imits. T T his
must b b e b b orne i i n m m ind p p articularly
on s s lippery o o r w w et r r oads. W W hen t t he
ABS c c omes i i nto t t he c c ontrol r r ange
the s s peed m m ust i i mmediately b b e
adapted t t o t t he r r oad a a nd t t raffic
conditions. T T he i i ncreased a a mount
of s s afety a a vailable m m ust n n ot t t empt
one i i nto t t aking r r isks.
If a defect occurs on the ABS it is indi-
cated by one or two warning lamps.
3.9