How to Reset Service Def System See Dealer

If you need to reset the service def system and see a dealer, start by making sure your car is up to date on all routine maintenance. Next, check with the manufacturer’s website or owner’s manual for specific instructions on how to reset your particular vehicle’s service def system. Depending on the make and model of your car, it may involve using a special diagnostic tool or turning off certain components in order for it to be properly reset.

If necessary, contact an authorized dealership for assistance with this process as they will have access to any needed tools or information related to your vehicle. Once complete, make sure that you keep track of any future scheduled maintenance so that you can stay ahead of any potential problems and ensure that the service def system remains functioning properly at all times.

  • Contact your dealership service department for assistance: Before attempting to reset the Service Def system, contact your local dealership’s service department and explain that you need to reset the system
  • They will be able to advise whether or not it is necessary, as well as provide instructions on how to do so
  • Disconnect the negative terminal of the battery: To reset a Service Def system, you must first disconnect the negative terminal of your vehicle’s battery by using a wrench or pliers – never touch both terminals at once with bare hands! Once disconnected, wait five minutes before reconnecting it again
  • Reconnect the negative terminal: After five minutes have passed, reconnect the negative terminal back onto its post and tighten it securely with a wrench or pliers – again never touch both terminals at once with bare hands! Now start your engine and allow it to run for around 10 minutes in order for all systems within your car’s computer network to reinitialize themselves properly
  • This should effectively clear any codes stored in memory related to servicing required soon messages due from Service Def System issues caused by faulty sensors or other components within your vehicle’s electrical systems failing prematurely over time due wear & tear/usage etc
  • If after following these steps you still receive an alert regarding Service Def System issues then please seek professional advice from a qualified mechanic ASAP otherwise further damage may occur which could lead costly repairs being needed now or down line depending on what needs replacing etc…

How To Reset DEF Message – Dodge Cummins

What is the Service Def System Warning Light?

The DEF system warning light is an important indicator for drivers of vehicles with diesel engines. When this light illuminates, it means that something is wrong with the DEF (Diesel Exhaust Fluid) system in your vehicle and requires immediate attention. The service DEF system warning light indicates a problem with the amount of fluid stored in the tank or problems related to how it is being delivered to the engine.

This could be due to a faulty sensor, clogged lines, or other mechanical issues related to the exhaust treatment systems. It’s always best to take your car into a certified mechanic as soon as possible when you see this warning light so they can properly diagnose and fix what’s causing it before any more damage occurs. Additionally, make sure that you are refilling your DEF tank on schedule according to manufacturer specifications – not doing so can lead to more serious issues down the road!

What Does the Service Def Fluid Light Mean?

The service DEF fluid light is an important indicator for drivers with diesel engines. This warning light indicates that the exhaust system needs to be replenished with Diesel Exhaust Fluid (DEF). DEF is a non-toxic solution of urea and de-ionized water, which helps reduce emissions of nitrogen oxide from diesel vehicles, by converting it into harmless nitrogen and steam.

When this warning light illuminates on your dashboard, it’s time to top up the tank with additional DEF fluid as soon as possible. It’s best to use genuine manufacturer approved products when topping up your DEF tank, in order to ensure compatibility and optimum performance of your vehicle’s exhaust system. If you are using a generic product or low quality replacement part instead then there may be issues such as poor fuel economy or reduced engine power output due to improper combustion.

Additionally, if you do not refill the DEF tank before the level runs too low then further damage may occur which can lead to costly repairs down the line. So make sure you take care of this warning light promptly and keep on top of your vehicle’s maintenance schedule!

Where is the Def Level Sensor Located?

The DEF (Diesel Exhaust Fluid) level sensor is typically located in the same area as the fill neck. It can be found at the base of the DEF tank, near to where it meets with the vehicle’s exhaust system. The location may vary from vehicle to vehicle, but generally speaking it should be quite easy to locate if you look for a small electrical connection on or near your DEF tank.

If there isn’t one present then you may need to have an authorized mechanic check and replace it for you. Additionally, some vehicles are equipped with visual indicators that will alert you when your DEF level is low and require refilling.

How Do You Clear Codes on a 6.7 Cummins?

Clearing codes on a 6.7 Cummins is not as difficult as it may seem. The first step towards clearing the code is to find out what type of code you are dealing with. Some codes require special tools and some do not, so make sure to know which one you have before attempting to clear the code yourself.

Once you know what type of code it is, then you can move on to the actual process of clearing the codes from your 6.7 Cummins engine. The most common way to clear codes on a 6.7 Cummins engine is by using an OBD-II scanner or diagnostic tool that reads manufacturer-specific trouble codes (DTCs). These scanners plug into your vehicle’s computer system and help diagnose any issues in real-time, allowing technicians to identify exactly where problems are coming from for them to make repairs quickly and efficiently.

After connecting the scanner, simply follow the instructions provided by its software to clear any existing DTCs from your engine’s memory banks so they don’t reappear when you restart your vehicle again after completing repairs or maintenance work on it.

Why Does My Truck Say Service Def System See Dealer

If your truck is displaying a message that says “Service Def System See Dealer,” it means the diesel exhaust fluid (DEF) system needs to be serviced. DEF helps reduce emissions from diesel-powered vehicles, and when the system isn’t working properly, it can cause damage to exhaust components or even fail emission tests. For this reason, it’s important to take your vehicle into a certified mechanic as soon as possible for service so that you don’t experience any further problems down the road.

How Much Does It Cost to Service Def System

The cost of servicing a diesel engine will vary depending on the type of service needed and the make and model of the vehicle. Generally speaking, basic maintenance services such as oil changes, filter replacements, and fuel system cleaning can range from $100-$300 per service. More extensive repairs usually involve replacing parts or repairing existing components, which can cost hundreds or even thousands of dollars.

How to Service Def System

Servicing the DEF system is an important part of keeping your vehicle running smoothly. The most important step in servicing this system is to check the levels of diesel exhaust fluid (DEF) regularly, as it can become contaminated over time and will need to be replenished or replaced. Additionally, it’s important to check for any signs of leaks around the DEF tank and injector lines, as these may require immediate attention.

Finally, when replacing a DEF filter make sure that you use only genuine parts designed specifically for your vehicle model so that they fit properly and do not damage other components.


In conclusion, resetting the Service Def System is a relatively simple and straightforward process that can be done quickly with only a few tools. It requires no special knowledge or expertise to perform, making it an ideal DIY project for car owners who want to save money on maintenance costs. If you are still unsure about how to properly reset the system yourself, it is best to consult your dealer or service provider for expert advice.


  • Zayn

    Zohn Zayn Smith is a seasoned automotive enthusiast with over 15 years of experience in the industry. As the Founder and Chief Editor of Truckguider, he specializes in Dodge Ram models, including the Ram 1500 and Ram 2500. His deep understanding of these trucks makes him a trusted authority on everything from performance and maintenance to towing capabilities.

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