Trailer power supply
The trailer socket of your vehicle is equipped at the factory with a permanent power supply. The permanent power supply is supplied via trailer socket pin 4.
You can connect accessories with a maximum power consumption of 240 W to the
permanent power supply. You must not charge a trailer battery using the power supply.
The trailer's permanent power supply is switched off in the event of low vehicle supply voltage and after six hours at the latest. You can obtain further information about installing the trailer's electrical equipment from a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.
See also:
Seat belts
Display messages
After starting the
engine, the red seat
belt warning lamp lights
up for six seconds.
Possible causes/consequences and ►
Solutions
The seat belt warning lamp reminds the ...
Checking the battery
Press the or
button. The battery is working
properly if battery check lamp 1 lights up briefly
If battery check lamp 1 does not light up briefly during the test, the battery
is discha ...
Fuse box on the right in the direction of
travel
Open the hood.
Remove any existing moisture from the
fuse box using a dry cloth.
To open: open clamps 2.
Remove cover 2 upwards.
To close: check whether the rubber seal is
lying corre ...