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  • A-Class
  • Saloon
  • 09/2019
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Starting the charging process
DANGER Risk of fatal injury when charging with a damaged socket

The charging process involves high voltage. If the charging cable, vehicle socket or mains socket is damaged, you could suffer an electric shock.

Only use an undamaged charging cable.
Avoid mechanical damage, e.g. caused by squashing, shearing or driving over the cable.
Have a damaged vehicle socket replaced at a qualified specialist workshop as soon as possible.
Never connect the charging cable to a damaged vehicle socket.
NOTE Overvoltage in the mains supply can damage the vehicle.

The vehicle is therefore equipped with a device which protects it from overvoltage in the mains supply. This protection device may be triggered during severe thunderstorms, for example, and may cause the building protection system to trip or may interrupt the charging process. These functions help to protect the vehicle.

After the building protection system has been switched on again, the charging process resumes automatically.

Following an interruption in the power supply without the building protection system being tripped, it may take up to 10 minutes for charging to resume automatically.

NOTE Heat generated by the charging cable and charging cable connector

During the charging process, the charging cable and charging cable connector may heat up within permissible limit values.

The permissible limit values are observed provided that:

  • The mains power supply equipment and the charging cable are not damaged.

  • The instructions for handling the charging cable and controls on the charging cable have been followed.

If the charging cable or charging cable connector becomes too hot, have the power supply equipment of the mains supply checked.
NOTE Damaged or dirty vehicle socket
Always keep the socket cover and the socket flap closed when there is no charging cable connected. This protects the vehicle socket from dirt and damage.
Make sure that the socket cover is closed properly before closing the socket flap. This can otherwise result in damage which may prevent the socket flap from being opened again.
Requirements:

  • The transmission is in position .

  • The bonnet is closed.

  • The vehicle is unlocked or the distance between the key and the vehicle does not exceed 1 m.

  • The hybrid system is not activated. The indicator on the multifunction display is off.

  • The charging cable is not taut.

Depending on the national version, the vehicle is equipped with one of the following vehicle sockets.

Combo 1 vehicle socket
Combo 2 vehicle socket
Press socket flap .

Socket flap swings open.

The indicator lamp and status display light up white.

When the hybrid system is activated (the display is lit in the multifunction display), socket flap cannot be opened.

Press catch to the left.

Socket cover is open.

Only vehicle socket connection is required for charging process mode 2/3. In this case, only open the upper part of socket cover .

To charge at a mains socket (mode 2):
insert the mains plug into the mains socket of the external power source to the stop.
Set the maximum charging current if required More.
Insert the charging cable connector into vehicle socket connection to the stop. Vehicle socket connection remains free and should remain covered by the lower part of socket cover .

Make sure that the charging cable is not taut when inserted.

The indicator lamp and status display first flash orange and then green as soon as the high-voltage battery is being charged.

To charge at a wallbox/charging station (mode 3):
insert the charging cable connector into vehicle socket connection to the stop. Vehicle socket connection remains free and should remain covered by the lower part of socket cover . If the wallbox/charging station is not equipped with a charging cable, insert the plug of the vehicle charging cable into the wallbox/charging station socket to the stop.

Make sure that the charging cable is not taut when inserted.

The indicator lamp and status display first flash orange and then green as soon as the high-voltage battery is being charged.

To charge at a charging station (mode 4):
insert the charging cable connector into the vehicle socket to the stop.

Make sure that the charging cable is not taut when inserted.

The indicator lamp and status display first flash orange and then green as soon as the high-voltage battery is being charged.

If the charging cable is connected to the vehicle, the drive system cannot be started and the vehicle cannot be moved.

At the start of the charging process, the charge level display is shown in the instrument cluster with a charging prediction. The charging prediction either refers to the predicted charge level at the set departure time, or the time at which the high-voltage battery will be fully charged.

Observe any information which may be displayed in the instrument cluster:

  • Charge level display More

  • Display messages

Depending on the temperature, the fan and battery cooling system may audibly switch on during the charging process.

If the vehicle is idle for lengthy periods and connected to the mains supply, the high-voltage battery will be charged automatically as needed or when electrical consumers are activated (e.g. pre-entry climate control).

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