WARNING

If the vehicle/trailer combination is not secured, the trailer may come loose. As a result, you could cause an accident.

Observe the ball coupling manufacturer's installation instructions and special instructions for use.

Mercedes-Benz recommends that you only use ball couplings that have been tested and approved by Mercedes-Benz. This helps to avoid damage to the vehicle.

Protective cap

• Pull protective cap 1 in the direction of the arrow out of ball coupling recess 2.
• Stow protective cap 1 safely.
• Observe the manufacturer's installation instructions.

WARNING

If the ball coupling is not correctly installed and secured, the ball coupling and the trailer could come loose. As a result, you could cause an accident.

Therefore, please observe the following:

• Ensure that the ball coupling is secured according to the ball coupling manufacturer's installation instructions.
• If the ball coupling cannot be installed as prescribed, detach the ball coupling. Under these circumstances, the ball coupling must not be used for trailer towing.

Have the entire trailer tow hitch checked at a qualified specialist workshop.