- How to reset service def system on dodge drivers#
- How to reset service def system on dodge software#
If you suspect a less than forthright answers, check things out with an independent shop you may know and trust. Take a stroll to the parts and service counters when shopping in a dealership to ask their opinions on repair expenses and what to expect down the road. So when determining the risk versus benefit for light diesel over gasoline, take into account the costs of DEF system repairs after the warranty expires. Mercedes also reported in 2017 that their four-cylinder diesels were “off the table” due to difficulty in achieving certification in North America. As FCA recently announced their decision to cease sales of light duty diesels in North America (no firm date yet announced) this won’t be much of an additional risk to their bottom line. The price points of DEF system repairs has become enough of an issue with FCA (Fiat Chrysler Auto) that they have extended coverage for most DEF system parts for eight years, but only on 2018 and later model year vehicles.
How to reset service def system on dodge software#
And while some heavy truck service centers have been reported to have developed software bypasses, few of these illegal cures exist for passenger units. For FCA, VW, and Mercedes Benz (for example) these systems are only covered by the base warranty of three or four years (depending on vehicle manufacturer).Īs all DEF-reliant vehicles have control systems to shut the engine down (or prevent it from restarting) when major failures occur, ignoring warnings won’t lead to happy results. And then there’s the myriad number of sensors, relays, controls, lines, and such to consider. Some injectors can cost more than $1,000 just for the part, not to mention diagnosis and replacement costs. When heaters are placed in the area of a DEF storage tank, certain amounts of it can still freeze or thicken, leading to injection problems. DEF systems have built-in heaters to keep the fluid in liquid form because it can freeze, damaging DEP pumps and injectors, but Mother Nature has a way of beating the best laid plans of mice and diesel engineers. Poor designs, build quality, and temperamental weather also take their toll. (Read the fine print on your warranty documents and you’ll find these shops are justified in this practice.)īut it’s not only poor quality DEF that causes problems. Automakers expect these facilities to have chemical test strips on hand to determine the quality of DEF in their products.
Dealership service departments routinely charge their clients for time spent on tracing a warning light down to contaminated DEF even when these vehicles are still within the time and distance limits of their warranty.
How to reset service def system on dodge drivers#
We covered the risks of using poor quality DEF fluid in earlier columns and provided warnings to drivers regarding the costs of diagnosing check engine lights that are caused by this fluid when it contains anything more than trace amounts of hydrocarbons.
Once the DEFs contracted back by turning back fully to liquid, the message goes away because the sensor is no longer tripped. This advertisement has not loaded yet, but your article continues below. What Ive read is that when the temps are low, like the 21F shown on your dash, the DEF will start to freeze and expand setting off a sensor.