RAM 3500 Truck 2WD L6-6.7L DSL Turbo (2010)
Heated Glass Element Switch: Description and Operation
Rear Defogger Switch - Operation
OPERATION
An amber indicator will illuminate when the rear window defogger switch is activated. When activated, the switch sends a request signal to the to the
Totally Integrated Power Module (TIPM) to energize the internal EBL high side driver to provide battery current to the rear window defogger grid lines
and to the heated side view mirrors, as equipped.
NOTE: The EBL system turns off automatically after 15 minutes of initial operation. Each following activation cycle of the EBL system will
last 10 minutes.
The EBL system will be automatically turned off after an initial programmed time interval of about 15 minutes, as long as the ignition switch is in RUN.
After the initial time interval has expired, if the rear window defogger switch is pressed to ON again during the same ignition cycle, the EBL system will
automatically turn off after about 10 minutes. The EBL system will automatically shut off if the ignition switch is turned to any position other than RUN,
or it can be turned off manually by pressing the rear window defogger switch a second time.
The rear window defogger switch is diagnosed using a scan tool See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures.
The rear window defogger switch and the rear window defogger indicator cannot be repaired and the A/C-heater control must be replaced if inoperative
or damaged See: Heating and Air Conditioning/Control Assembly/Service and Repair/A/C and Heater Control - Removal.
