Mercedes-Benz CLA Owner's Manual page 257

254 Driving and parking
Coupling up / uncoupling a trailer
Requirements:
the ball neck must be extended and engaged
R
in a securely locked position
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 order
R
The functions of the following systems are affec‐
ted by a correctly connected trailer:
Active Lane Keeping Assist
R
ESP ® trailer stabilisation
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist or Active Blind Spot Assist
R
Drive Away Assist
R
Cross Traffic Alert
R
Reversing camera
R
360° Camera
R
Coupling up a trailer
* NOTE Damage to the vehicle battery due
to full discharge
Charging the trailer battery using the power
supply of the trailer can damage the vehicle
battery.
Do not use the vehicle's power supply
#
to charge the trailer battery.
Remove the cover from the ball head and
#
store it in a safe place ( page 110).
/
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 the bayonet coupling 2
#
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
to the right as