The Mercedes-Benz USA website, mbusa.com, has the official user manuals for Mercedes-Benz models, as of 2015. The website offers user manuals for all models from the year 2000 to 2016.
From the Mercedes-Benz USA main page, click on the Owners Support section of the website. Click on the Owners Manuals section. Choose the model and year of the vehicle for which you need the user manual. Depending on your browser settings, the user manual appears in your browser or downloads to your hard drive in PDF format. The site can also mail a copy of the user manual to a valid email address.