What is ESS light?
What is ESS light? The Emergency Signal System (ESS) causes the hazard lights to flash at high speed if the driver suddenly brakes when traveling at high speed. If the vehicle comes to a complete stop, the hazard lights swtich to a normal flashing speed to help prevent rear-end collisions. What is ESS in Chrysler Pacifica? Engine STOP/START. System (ESS) — If Equipped. The STOP/START system was developed to reduce emissions by stopping the engine automatically dur- ing a vehicle stop if the conditions are met and the brake is depressed. The system defaults back ON at every ignition cycle....