Smart Key battery

See also:

DISTRONIC displays in thespeedometer
When DISTRONIC is activated, one or two segments in the set speed range light up. For design reasons, the speed displayed in the speedometer may differ slightly from the speed set for DISTRON ...

4ETS (Electronic Traction System)
Observe the "Important safety notes" section. Traction control is part of ESP®. Traction control brakes the drive wheels individually if they spin. This enables you to pull away and ...

General information
WARNING When leaving the vehicle, always remove the SmartKey from the starter switch, take it with you, and lock the vehicle. Do not leave children unattended in the vehicle, or with access ...