See also:

Horn
Audible warning system to alert other road users to an imminent danger. Press the central part of the multifunction steering wheel. Use the horn moderately and only in the following circumstances: ...

Leaving limiter mode
...

"Porsche Tiptronic System" automatic gearbox
This six-speed gearbox offers a choice between the comfort of fully automatic operation or the pleasure of manual gear changing. 1. Gear lever. 2. Button "S" (sport) . 3. Button " ...