Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: Standby mode (extension of the starter battery's period out of use)

Standby mode function

This function is not available for all models.

If standby mode is activated, the vehicle can be parked for an extended period of time without losing power.

Standby mode is characterized by the following:

• The starter battery is preserved.
• The maximum non-operational time out of use is displayed in the multimedia system display.
• The connection to online services is interrupted.

If the following conditions are fulfilled, standby mode can be activated or deactivated using the multimedia system:

• The engine is switched off.
• The ignition is switched on.

Exceeding the vehicle's displayed non-operational time may cause inconvenience, i.e. it cannot be guaranteed that the starter battery will reliably start the engine.

The starter battery must be charged first in the following situations:

• The vehicle's non-operational time must be extended.
• The Battery Charge Insufficient for Standby Mode message appears in the multimedia system display.

Standby mode is automatically deactivated when the ignition is switched on.

Activating/deactivating standby mode

Multimedia system:

Vehicle → Vehicle Settings → Standby Mode

This function is not available for all models.

• Activate or deactivate the function.

  When you activate the function, a prompt appears.

• Select Yes.

  Standby mode is activated.