Where is the Diesel Exhaust Fluid (DEF) tank fill located?

The Diesel Exhaust Fluid (DEF) tank fill is typically located on the driver's side, rear of the axle. This placement allows for easier access when refueling the DEF, which is essential for the operation of newer diesel engines that use selective catalytic reduction (SCR) technology to minimize emissions. This location is designed to be practical for maintenance personnel and operators, ensuring that they can efficiently refill the DEF without hindrance from other components of the vehicle.

In addition to accessibility, the positioning helps maintain a clear separation from the diesel fuel fill, reducing the risk of cross-contamination. Understanding the proper location of the DEF tank fill is crucial for driver engineers as it contributes to the overall efficiency and compliance with environmental regulations governing emissions.