General notes
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and open the driver's door or the rear door, the anti-theft alarm system will be triggered .
► To end the alarm: insert the SmartKey into the ignition lock.
Removing the mechanical key

1 Release catch
2 Mechanical key
► Push release catch 1 in the direction of the arrow and at the same time remove mechanical key 2 from the SmartKey.
Underinflated or overinflated tires
WARNING
Tires with pressure that is too low can
overheat and burst as a consequence. In
addition, they also suffer from excessive and/
or irregular wear, which can severely impair
the braking pro ...
Genuine Mercedes-Benz parts
WARNING
Driving safety may be impaired if nonapproved
parts, tires and wheels or safetyrelevant
accessories are used.
This could lead to malfunctions in safetyrelevant
systems, e.g. the brake s ...
Removing the ball coupling
X Remove the spring cotter.
■ Remove the bolt from the ball coupling
recess.
■ Remove the ball coupling from the ball
coupling recess.
■ Clean the ball coupling if it is dirty.
...