RAM 2500 Truck 2WD L6-6.7L DSL Turbo (2010)
Seat Heater Switch: Description and Operation
Heated Seat Switch - Operation
Rear
REAR
The heated seat switches for the 2nd row seats are located in the rear center floor console. Amber Light Emitting Diodes (LEDS) in the top portion of
each switch indicate the level of heat in use: Two LEDs are illuminated for high, one for low, and none for off. Pressing the switch once will select
high-level heating. Pressing the switch a second time will select low-level heating. Pressing the switch a third time will shut the heating elements off.
When either of the 2nd row heated seat switches are depressed a hardwired resistance signal is sent to the Instrument Cluster(also known as the Cab
Compartment Node/CCN). The instrument cluster then sends a message via the Controller Area Network (CAN) data bus network to the heated seat
module, signaling the module to energize the heating element for the selected seat. Light Emitting Diodes (LED) in each switch indicate the level of heat
in use. The switch LEDs are controlled by the instrument cluster.
Front
FRONT
A Heated Seat Control Module (HSCM) is used to control the heated seat system. The HSCM responds to heated seat switch input and ignition switch
status inputs by controlling the 12v output to the seat heating elements through integral solid-state relays.
When any of the heated seat switches are depressed the heating elements for the selected seat are energized. Light Emitting Diodes (LEDS) on the switch
indicate the level of heat in use: Two LEDs are illuminated for high, one for low, and none for off. Pressing the switch once will select high-level
heating. Pressing the switch a second time will select low-level heating. Pressing the switch a third time will shut the heating elements off.
The HSCM energizes an integral solid-state relay, which supplies battery current to the heating elements. When high-temperature heating is selected, the
heaters provide a boosted heat level during the first four minutes of operation after heating is activated. The heat output then drops to the normal
high-temperature level. If high-level heating is selected, the control system will automatically switch to the low level after two hours of continuous
operation. At that time, the number of illuminated LEDs changes from two to one, indicating the change. Operation on the low setting will continue
indefinitely until the switch/module button is pushed to turn the system off.
The system will automatically turn off the heating elements if it detects an OPEN or LOW short in the heating element circuit.
