Important safety notes

For safety reasons, switch off the windshield WARNING
For safety reasons, switch off the windshield wipers and remove the key from the ignition lock before changing the wiper blades (vehicles with KEYLESS-GO: make sure that the on-board electronics are in state 0).
Otherwise, the wiper motor could be switched on suddenly and cause injury.

To avoid damaging the wiper blades, To avoid damaging the wiper blades, make sure that you touch only the wiper arm of the wiper.

Never open the hood if a windshield wiper Never open the hood if a windshield wiper arm has been folded away from the windshield.
Never fold a windshield wiper arm without a wiper blade back onto the windshield/rear window.
Hold the windshield wiper arm firmly when you change the wiper blade. If you release the windshield wiper arm without a wiper blade and it falls onto the windshield, the windshield may be damaged by the force of the impact.
Mercedes-Benz recommends that you have the wiper blades replaced by a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center.

    See also:

    Locking the vehicle (mechanical key)
    If the vehicle can no longer be locked with the SmartKey, use the mechanical key. •► Open the driver's door.•► Close the front-passenger door, the rear doors and the trunk lid/tailgat ...

    Servicing the brakes
    If the red brake warning lamp lights up in the instrument cluster and you hear a warning tone while the engine is running, the brake fluid level may be too low. Observe additional warning messa ...

    Child-proof locks for the rear doors
    WARNING Children could open a rear door from inside the vehicle. This could result in serious injuries or an accident. Therefore, when children ride in the rear always secure the rear doors ...