It all depends on the warranty you purchased when you purchased your vehicle. Most standard warranties are three years, so in that case, your warranty would be valid.
The 2009 Mercedes-Benz CL-Class has a 4 yr./ 50000 mi. basic warranty.
The 2009 Mercedes-Benz E-Class has a 4 yr./ 50000 mi. basic warranty.
The 2009 Mercedes-Benz S-Class has a 4 yr./ 50000 mi. basic warranty.
The 2009 Mercedes-Benz SLK-Class has a 4 yr./ 50000 mi. basic warranty.
The 2009 Mercedes-Benz SL-Class has a 4 yr./ 50000 mi. basic warranty.
The drivetrain warranty of the 2009 Mercedes-Benz E-Class is 4 yr./ 50000 mi..
The drivetrain warranty of the 2009 Mercedes-Benz C-Class is 4 yr./ 50000 mi..
The 2009 Mercedes-Benz M-Class has a 4 yr./ 50000 mi. basic warranty.
The drivetrain warranty of the 2009 Mercedes-Benz GL-Class is 4 yr./ 50000 mi..
The 2009 Mercedes-Benz GL-Class has a 4 yr./ 50000 mi. basic warranty.
The drivetrain warranty of the 2009 Mercedes-Benz M-Class is 4 yr./ 50000 mi..
The drivetrain warranty of the 2009 Mercedes-Benz SL-Class is 4 yr./ 50000 mi..