W700 Def Tank Location (2024)

FAQs

Where is my DEF tank located? ›

DEF levels can also be checked manually. The storage tank can typically be found next to the diesel fuel saddle tank on a truck, or in the spare tire area of a passenger vehicle.

the DEF tank filler is located on the left hand side of the engine bay when looking from the front. The manual does not specify the location of the filter, but it may be inside the tank as well.

HICommonly called the "DEF Fluid Heater", this unit is located in the DEF (Diesel Exhaust Fluid) tank and contains the pickup tube for the reductant pump module, an electric heating element, a temperature sensor, and an electrode-type level sensor. HIAgain, The def line heater is in the Fluid Tank.

You can “bypass” the DEF level sensor easily, but it won't accomplish anything. There are many other sensors to monitor the DEF system, and they'll detect that the NOx is not being reduced, and your engine ECU will still derate the engine.

“Malfunction of DEF Quality Sensors (DEFQS) can cause an engine torque derate through a number of different failure modes, including incorrectly or inappropriately detecting of low fluid quality in the diesel exhaust fluid tank, failure to communicate with the ECM, or being in a failed or offline state,” Thomas noted.

It sounds like your DEF gauve sending unit has gone bad or stuck. It will derate if it thinks the tank is empty. These work very similar to a fuel gauge. Make sure all the users on your tank are plugged in and clean.

All told, diesel exhaust fluid is just as important to your vehicle as fuel, coolant, oil and all the other fluids you regularly check and replace. Your machine will not function without DEF, and you can face serious consequences from letting the DEF tank run dry.

Description: Diesel exhaust fluid warning light comes on with the engine running when the exhaust gas after-treatment system has malfunctioned or the level of Diesel Exhaust Fluid (DEF) is running low, contaminated, or thinned. Description: Stays on constantly when a fault has been detected with the system.

The DEF tank needs to be filled once for every 3 to 4 times that you refuel with diesel fuel.

* Diesel is less dense than DEF and will float on top of the DEF in the tank, but even small amounts of diesel can damage the exhaust system.

How do you know when DEF tank is full? ›

Locate the cap on the DEF tank and look into the DEF tank to visually inspect the fluid level. The tank may have markings indicating minimum and maximum levels or a gauge that provides a visual representation of the DEF level. Compare the current level with the recommended range.

The diesel exhaust fluid (DEF) tank is typically located behind the cab, next to the diesel fuel tank.

Like water, DEF will expand up to 7% when frozen and can damage the storage tank if it is full or nearly full when it freezes. Keeping your DEF tank less than full in cold temperatures is a good idea.

Most systems have a built-in DEF tank heater that will thaw the fluid during normal vehicle operation. If your vehicle's SCR has a built-in DEF tank heater, turn the vehicle on to initiate the thawing process.

DEF is in Atlanta, GA.

DEF is available in jugs or at the pump.

A DEF quality sensor is mounted on the side of the DEF tank. This sensor detects the Urea concentration in the DEF to confirm it is acceptable for effective dosing (approximately 32.5% Urea).