ATS Warning Lamps

Warning lamps in the driver's message center alert the driver of situations with the ATS.

• An illuminated DPF lamp indicates a regen is needed. See Fig..

  

  Fig. 1, Diesel Particulate Filter (DPF) Status Lamp

• A slow, 10-second flashing of the HEST lamp alerts the driver that a parked regen is in progress, but the exhaust temperatures are still relatively cool. See Fig.. It also indicates that the high-idle speed is being controlled by the engine software, not the driver.

  

  Fig. 2, High Exhaust System Temperature (HEST) Lamp

• A steadily illuminated HEST lamp alerts the operator of high exhaust temperatures when vehicle speed is below 5 mph (8 km/h) while it is performing an automatic regen, and during a parked regen. See Fig..