Reductant Heaters - Transit

The reductant heaters maintain the diesel exhaust fluid (DEF) in a liquid state during cold ambient temperatures. There are three heating elements in the system, each receiving voltage from the reductant dosage control module. The reductant pressure line heater is integral to the reductant pressure line. The reductant tank heater is integral to the reductant heater and sender assembly. For additional information on the reductant tank heater, refer to the reductant heater and sender assembly description in this article. The reductant pump heater is integral to the reductant pump assembly. For additional information on the reductant pump heater, refer to the reductant pump assembly description in this article.