Sprinter 2500 V6-3.0L DSL Turbo VIN 45 (2007)
Seat Heater: Description and Operation
Heater-Seat Element
Description
DESCRIPTION
Vehicles equipped with the optional heated seat system have two, heated seat elements, located in each front seat. One heating element is used for each
seat cushion and another for each seat back.
Each of the heated seat element consists of multiple heating circuits operating in parallel throughout the element. The heated seat elements are captured
between the trim cover and the seat cushion assembly. If a malfunction occurs in one or more of the individual element circuits, the others will continue
to provide heat.
The heated seat elements cannot be repaired. If found to be damaged or inoperative, a new heating element assembly must be installed.
Operation
OPERATION
One end of the heated seat element is connected to ground at all times. Battery current is directed to the other end of the heated seat element by the
instrument panel switch pod (also known as the center console switch unit or Switch Bank Module/SBM). The instrument panel switch pod will energize
the heated seat element when the heated seat switch button is depressed in the Low or High position.
As electrical current passes through the heated seat element, the resistance of the wire used in the element disperses some of the electrical current in the
form of heat. The heat produced by the heated seat element then radiates through the underside of the seat cushion and seat back trim covers, warming
the seat cover and its occupant.