Smartway Certified Parked Heater Operation

p3 dm 08.02.003

All vehicles equipped with diesel operated coolant heaters are "Smartway Certified". The coolant heater will keep the engine coolant between approximately 150 and 180°F (65 and 82°C). Heated coolant is routed through the auxiliary HVAC heater core to allow heater-only function of the auxiliary HVAC system.

  1. Turn the block heater on.
  2. Set the temperature dial to the desired heat setting.
  3. Turn the HVAC blower on.
Note:
Parent topic: Sleeper Climate Control Panel
Document Number: 0000113573
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-05-06