2003 YAMAHA WR450F
should be your starter selonoid...they are a common problem on raptors.
If there is no heat coming out of the vents, but there is air coming out on a 2003 Mercedes Benz E-320, check the thermostat to make sure it is not sticking. If this is okay, check the heater core. If the heater core is bad, there will be water on the passenger side floorboard.
2003 yamaha
its under the seat
2003
22x10x9
its an 2003
B8es
152
145hp
.30