Regulating characteristics
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Various adaptive air suspension regulating characteristic maps are activated depending on the setting selected in Audi drive select.
Every mode has a defined vehicle level when the vehicle is stationary and a corresponding damper characteristic map. Automatic
changes to the levels are initiated by the regulation depending on the vehicle speed.
The different drive select settings correspond to three different vehicle levels. Every new driving cycle starts in “comfort” mode
automatically. If “Raise” mode is selected, the highest vehicle level is set (+20 mm compared to normal level).
The high level is ended automatically at 30 km/h and above. The vehicle is then lowered to the level of the previously selected
mode. In “comfort” and “dynamic” modes, the level is lowered by 10 mm if the vehicle speed exceeds 90 km/h for a period of
20 seconds. If the speed subsequently drops below 70 km/h for a period of 10 seconds, the vehicle is raised to the initial level of
“comfort/dynamic” mode. If the speed drops below 50 km/h, the vehicle is raised to this level immediately without a time delay. If
the vehicle speed exceeds 180 km/h for a period of 10 seconds, the level is lowered by 22 mm. If the speed is subsequently re-
duced to under 150 km/h for 10 seconds, the original level is restored. If the speed exceeds 120 km/h, the vehicle is raised to
lower level 1 immediately without a time delay. The aim of these automatic level reductions is, alongside increased driving stabili-
ty, to reduce air turbulence under the vehicle and in the wheel housings. Improving the aerodynamics positively affects the drive
power required and therefore also increases the range. This is the reason why low level 2 (-22 mm compared to “normal” level) is
activated when “efficiency” mode is selected.
It is only possible to lower the level when the vehicle is stationary if all four doors are closed. When the vehicle is parked (after bus
sleep mode), a one-off check of the vehicle level is made after eight hours by evaluating the measured values from the vehicle level
senders. If the accumulator pressure is sufficient, the vehicle is raised (if necessary) using the accumulator only (the compressor
does not run).
Electronic damping control
Electronic damping control with steel springs is standard equipment on the Audi e‑tron GT. The system’s design and functions fun-
damentally correspond to those of the systems used in other Audi models. A new feature is that the acceleration of unsprung mass-
es can be detected by four separate sensors. Single-tube dampers with inner regulating valves are used. The running gear control
unit J775 remains the control centre on the Audi e‑tron GT.
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