Transmissions: Automatic Transmissions: Electronic control transmission
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Topic IntroductionHelp

Driving situation identification

In specific driving situations, it can be beneficial to select a gear not normally selected in a shift program.

A normal shift program characteristic initiates shift changes according to road speed and throttle opening angle.

Shift characteristics are arranged so that up-shifts are triggered by an increase in road speed or by reduced throttle opening.

Down-shifts occur when the opposite situations apply.

But in some situations, as when the brakes are applied when cornering or descending gradients, unwanted gear shifts may occur.

If additional inputs are used to determine these circumstances then an optimum ratio can be selected.

Four special functions are provided.