Porsche 911 GT3 Cup 2018 Techical Manual page 330

Calibrating the steering-angle sensor
 Select the group "Steering"
 Zero the channel by pressing the "Zero" button
6.6.3.4
Calibrating the Suspension travel sensor
 Select the group "Suspension travel"
 Zero the channel by pressing the "Zero" button
6.6.3.5
Version: 4/20/2018
Electrical system
911 GT3 Cup (991 II)
MY 2018
329