There is no brake energy recuperation when the high-voltage battery is completely charged. In this case, you may notice slightly greater brake pedal travel and less initial braking power by the electric motor. This is normal and no cause for concern.
Above a battery charge level of 85%, the braking power by the electric motor decreases regardless of the selector level position and/or the brake energy recuperation stage. This is also normal and no cause for concern.
Selecting a brake energy recuperation level
There are a total of 4 brake energy recuperation levels. It is possible to move up and down through
brake energy recuperation levels 1 to 3 by tapping the selector lever to the side ⇒ fig. 128 (+) and (-):
x Tap to the left, to switch up 1 recuperation level.
x Tap to the right, to switch down 1 recuperation level.
x Press to the right for a few seconds to switch off recuperation.
To change up to brake energy recuperation level 4: Pull the selector lever to position B. Pulling again in the direction of the arrow
WARNING
Medium, high and very high recuperation can lead to loss of traction and skidding, particular-ly on slippery roads. This can cause you to lose control of the vehicle, which can lead to accidents, collisions and serious injuries.
x When charging at high elevations (such as at the top of a pass) never charge the vehicle fully, in order to facilitate a braking effect by means of recuperation when descending.
x Only use medium, high or very high recuperation if visibility, weather, road and traffic conditions permit, and other road users are not put at risk due to the vehicle's acceleration and your driving style.
WARNING
The higher the charge level of the high-voltage battery, the lower the electric motor braking effect, to the point where no electric motor braking effect may be generated at all. This puts more strain on the vehicle brake.
x Reduce your speed before driving down a long, steep gradient.
x When driving down a long, steep gradient, slow the vehicle using the vehicle brake.
Notes on selecting a driving mode