Mercedes-Benz

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Problem	Possible causes/effects andsolutions
Vehicle is operational Switch off the ignition before exiting	You are leaving the vehicle when it is in a ready-to-drive state. When leaving the vehicle, switch off the ignition, secure the vehicle against rolling away and take the key with you. If you do not leave the vehicle, switch off the electrical consumers, e. g. the seat heater. Otherwise, the 12‑V battery may discharge and it will then be possible to start the vehicle only using a donor battery (starting assistance).

Problem

Possible causes/effects andsolutions

Vehicle is operational Switch off the ignition before exiting

You are leaving the vehicle when it is in a ready-to-drive state.

When leaving the vehicle, switch off the ignition, secure the vehicle against rolling away and take the key with you.

If you do not leave the vehicle, switch off the electrical consumers, e. g. the seat heater. Otherwise, the 12‑V battery may discharge and it will then be possible to start the vehicle only using a donor battery (starting assistance).