Mercedes-Benz EQS 2021 Owner's Manual page 307

304 Driving and parking
Trailers with a 7-pin plug can be connected to
the vehicle with the following adapters:
Adapter plug
R
Adapter cable
R
The trailer will be correctly detected by the vehi‐
cle only if the following conditions are met:
The trailer is connected correctly.
R
The trailer lighting system is in working
R
order.
The functions of the following systems will be
affected by a correctly connected trailer:
®
ESP trailer stabilisation
R
Active Lane Keeping Assist
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist or Active Blind Spot Assist
R
Drive Away Assist
R
Cross traffic warning
R
Manoeuvering brake function
R
Reversing camera
R
360° Camera
R
AIRMATIC
R
Coupling up a trailer
* NOTE Damage to the starter battery due
to full discharge
Charging the trailer battery using the power
supply of the trailer can damage the starter
battery.
Do not use the vehicle's power supply
#
to charge the trailer battery.
Remove the cover cap from the ball head and
#
store it in a safe place.
Position the trailer on a level surface behind
#
the vehicle and couple it up to the vehicle.
Open the socket cap.
#
Insert the plug with lug 1
#
the socket.
Turn bayonet coupling 2 to the right as far
#
as it will go.
Let the cap engage.
#
Secure the cable to the trailer with cable ties
#
(only if you are using an adapter cable).
Make sure that the cable is always slack for
#
ease of movement during cornering.
in groove 3 on