Tires with a specified direction of rotation have additional benefits, e.g. if there is a risk of hydroplaning. You will only gain these benefits if the correct direction of rotation is observed.
An arrow on the sidewall of the tire indicates its correct direction of rotation.
You may mount the spare wheel against the direction of rotation. Adhere to the time restriction on use as well as the speed limitation specified on the spare wheel.
Driving systems
...
Windshield wipers
Switching the windshield wipers on/off
WARNING
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise ...
Information for customers in
California
Under California law you may be entitled to a
replacement of your vehicle or a refund of the
purchase price or lease price, if after a
reasonable number of repair attempts
Mercedes-Benz USA, LLC a ...