Take it to the dealer so they dont complain messing with the car actually made the problem. I know, I dont like it either but seems easiest not to fight it when you have the warrenty. Its the Mercedes version of the Neon, cant expect too much.
1986 190E 186K (For Sale)
(Maroon, Tan leather)
1996 C280 Sport 208K
(Brilliant Silver, Black Leather)
2002 CLK430 Sport 45K
(Brilliant Silver, Gray Leather , Birdseye Maple)