BMW 528I User Manual download pdf (Page 189)

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In order to take driving conditions into

account, ATC registers corners and

both uphill and downhill gradients. For

example, if you maintain speed through

a curve, the transmission does not up-

shift.

On uphill gradients, it shifts only when

the engine speed increases in order to

make more efficient use of power

reserves. On downhill gradients ATC

downshifts when the speed of the vehi-

cles increases, causing the driver to

step on the brakes.

Precision sensors monitor the number

of revolutions of the wheels. When

equipped with DSC, they also monitor

steering angle, lateral acceleration,

brake pressure and the movement of

the vehicle around its vertical axis.

If differences in the wheel speeds

occur, the system counteracts the dan-

ger of wheelspin by reducing torque. If

necessary, the system also responds

with additional applications of the

brakes at the rear wheels.

If the system detects an instability in the

vehicle's condition, the braking action

can also be directed to help the front

wheels by the DSC in order to help sta-

bilize the vehicle.

You may need some time to become

accustomed to this system intervention.

However, it guarantees optimum drive

force and driving stability.

The braking intervention may be

accompanied by a certain degree of

noise.

ATC* ASC+T/DSC*

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BMW 528I User Manual Page 189