How To Permanently Turn Off Mds On Ram 1500?

How to Permanently Turn Off MDS on Ram 1500

The Multi-Displacement System (MDS) is a fuel-saving feature on some Ram 1500 models. It automatically deactivates certain cylinders under light load conditions to improve fuel economy. However, MDS can also be a source of frustration for some drivers, who may find it to be disruptive or even annoying. If you’re one of those drivers, you may be wondering how to permanently turn off MDS on your Ram 1500.

In this article, we’ll walk you through the steps on how to permanently turn off MDS on your Ram 1500. We’ll also provide some information on the pros and cons of disabling MDS, so you can make an informed decision about whether or not it’s right for you.

What is MDS?

MDS is a cylinder deactivation system that’s designed to improve fuel economy. It works by automatically disabling certain cylinders under light load conditions, such as when you’re cruising on the highway or sitting at a stoplight. This reduces the amount of fuel that the engine needs to use, which can lead to significant savings at the pump.

MDS is not available on all Ram 1500 models. It’s only included on certain V8 models, such as the 5.7-liter Hemi and the 6.4-liter Hemi. If you have a Ram 1500 with a V6 engine, you don’t have MDS.

How to Disable MDS

Disabling MDS on a Ram 1500 is a relatively simple process. However, it does require some technical knowledge and skills. If you’re not comfortable working on your own car, you may want to take it to a qualified mechanic.

To disable MDS, you’ll need to:

1. Locate the MDS control module. It’s usually located under the hood, near the front of the engine.
2. Disconnect the battery. This will prevent the MDS control module from receiving power.
3. Find the MDS disable switch. It’s a small, black switch that’s usually located near the battery.
4. Turn the MDS disable switch to the “ON” position. This will permanently disable MDS.
5. Reconnect the battery.

That’s it! You’ve now permanently disabled MDS on your Ram 1500.

Pros and Cons of Disabling MDS

There are both pros and cons to disabling MDS. Here’s a quick overview of each:

Pros:

  • Improved fuel economy. Disabling MDS can lead to significant improvements in fuel economy, especially if you do a lot of highway driving.
  • Reduced emissions. Disabling MDS can also help to reduce emissions, which is good for the environment.
  • Smoother ride. Some drivers find that disabling MDS makes their Ram 1500 ride smoother, especially at low speeds.

Cons:

  • Reduced power. Disabling MDS will reduce the power output of your Ram 1500. This may be noticeable if you tow a lot or if you drive in mountainous terrain.
  • Increased noise. Some drivers find that their Ram 1500 is louder when MDS is disabled. This is because the engine is running on fewer cylinders, which can produce more noise.
  • Possible warranty issues. Disabling MDS may void your warranty. It’s important to check with your dealer before you make any modifications to your vehicle.

Whether or not you should disable MDS on your Ram 1500 is a personal decision. There are both pros and cons to consider, and the best decision for you will depend on your individual needs and preferences.

If you’re still not sure whether or not to disable MDS, you may want to consult with a qualified mechanic or tuner. They can help you weigh the pros and cons and make the best decision for your particular situation.

Step Action Explanation
1 Press the “Start” button. This will open the Start menu.
2 Click on the “Settings” icon. This will open the Settings app.
3 Click on the “System” category. This will open the System settings.
4 Click on the “Power & sleep” option. This will open the Power & sleep settings.
5 Click on the “Additional power settings” link. This will open the Additional power settings window.
6 Click on the “Choose what the power button does” link. This will open the Choose what the power button does window.
7 Click on the “Change settings that are currently unavailable” link. This will allow you to make changes to the power settings that are not normally available.
8 Uncheck the “Turn on fast startup (recommended)” checkbox. This will disable fast startup, which is a feature that allows your computer to start up faster.
9 Click on the “Save changes” button. This will save your changes and disable fast startup.

What is MDS?

MDS, or Multi-Displacement System, is a fuel-saving technology that is available on some Ram 1500 models. MDS allows the engine to deactivate four of its cylinders when cruising at low speeds or under light loads. This can help to improve fuel economy by up to 20%.

When MDS is activated, the cylinders that are deactivated are not completely turned off. They are still able to receive oil and spark, but they are not firing. This allows the engine to start up quickly and smoothly when needed.

MDS is controlled by the engine’s computer. The computer uses a variety of sensors to determine when MDS should be activated and deactivated. These sensors include:

  • The throttle position sensor
  • The engine speed sensor
  • The intake manifold pressure sensor
  • The exhaust gas temperature sensor

Why do you want to turn off MDS?

There are a few reasons why you might want to turn off MDS on your Ram 1500.

  • Improved performance. Some drivers report that their Ram 1500 feels more responsive and powerful when MDS is turned off. This is because the engine is able to produce more power when all of its cylinders are firing.
  • Reduced noise. MDS can sometimes cause a rattling or knocking noise when the engine is idling or under light loads. Turning off MDS can help to reduce this noise.
  • Better fuel economy. While MDS can help to improve fuel economy, some drivers find that they can get better gas mileage by turning it off. This is because the engine is more efficient when all of its cylinders are firing.

It is important to note that turning off MDS can also have some negative consequences. For example, it can increase emissions and make the engine harder to start in cold weather.

How to turn off MDS

There are a few different ways to turn off MDS on a Ram 1500.

  • The easiest way is to use a tuner or programmer. This will allow you to permanently turn off MDS with a simple one-time modification.
  • You can also turn off MDS by using a scan tool. This will allow you to temporarily turn off MDS, but you will need to repeat the process every time you start your truck.
  • Finally, you can turn off MDS by disconnecting the MDS sensor. This is a more permanent solution, but it can also be more difficult to do.

If you are not sure how to turn off MDS on your Ram 1500, it is best to consult with a qualified mechanic.

MDS is a fuel-saving technology that can help to improve the fuel economy of your Ram 1500. However, there are some reasons why you might want to turn off MDS. If you are not sure whether or not MDS is right for you, it is best to consult with a qualified mechanic.

How to turn off MDS temporarily

There are a few ways to turn off MDS temporarily.

  • Using the switch on the dash: The easiest way to turn off MDS temporarily is to use the switch on the dash. This switch is located to the left of the steering wheel, just below the instrument cluster. To turn off MDS, simply flip the switch to the “Off” position.
  • Using the Uconnect system: You can also turn off MDS using the Uconnect system. To do this, follow these steps:

1. Press the “Menu” button on the steering wheel.
2. Select “Settings”.
3. Select “Vehicle”.
4. Select “MDS”.
5. Select “Off”.

  • Using the OBD-II port: You can also turn off MDS using the OBD-II port. To do this, you will need an OBD-II scanner. Once you have the scanner, follow these steps:

1. Connect the scanner to the OBD-II port under the driver’s side dashboard.
2. Turn on the ignition.
3. The scanner will display a list of codes.
4. Select the “MDS” code.
5. Press the “Clear” button.

MDS will now be turned off until you restart the engine.

How to turn off MDS permanently

There are a few ways to turn off MDS permanently.

  • Using a tuner: The easiest way to turn off MDS permanently is to use a tuner. A tuner is a device that plugs into the OBD-II port and allows you to change the programming of your vehicle’s computer. To turn off MDS using a tuner, follow these steps:

1. Connect the tuner to the OBD-II port.
2. Turn on the ignition.
3. The tuner will display a list of options.
4. Select the “MDS” option.
5. Select the “Off” setting.

MDS will now be turned off permanently.

  • Reprogramming the PCM: You can also turn off MDS permanently by reprogramming the PCM. The PCM is the vehicle’s computer. To reprogram the PCM, you will need a scan tool and a copy of the vehicle’s factory software. To reprogram the PCM, follow these steps:

1. Connect the scan tool to the OBD-II port.
2. Turn on the ignition.
3. The scan tool will display a list of options.
4. Select the “Reprogram PCM” option.
5. Select the “MDS” option.
6. Select the “Off” setting.

MDS will now be turned off permanently.

Note: Reprogramming the PCM is a more advanced procedure than using a tuner. If you are not comfortable working on your vehicle’s computer, you should have a qualified technician perform this procedure.

Turning off MDS can improve fuel economy and performance. However, it is important to note that MDS can also help to protect your engine. If you are considering turning off MDS, you should weigh the benefits and risks carefully before making a decision.

Q: How do I permanently turn off MDS on my Ram 1500?

A: There are a few ways to permanently turn off MDS on your Ram 1500.

1. Use the switch in the cab. Some Ram 1500 models have a switch in the cab that can be used to turn off MDS. This is the easiest and most convenient way to disable MDS.
2. Use the OBD-II port. You can also use an OBD-II scanner to turn off MDS. This method is more complex than using the switch in the cab, but it gives you more control over how MDS is disabled.
3. Use a tuner. A tuner is a device that can be used to modify the engine’s computer programming. You can use a tuner to permanently turn off MDS, or you can use it to create a custom tune that disables MDS under certain conditions.

Q: What are the benefits of turning off MDS?

A: There are a few benefits to turning off MDS on your Ram 1500.

  • Improved fuel economy. MDS can help improve fuel economy by up to 20%. This is because MDS shuts down one or more cylinders when the engine is under light load, which reduces fuel consumption.
  • Improved performance. MDS can also improve performance by reducing engine drag. This can make the truck feel more responsive and accelerate quicker.
  • Reduced wear and tear on the engine. MDS can help reduce wear and tear on the engine by reducing the number of times the engine starts and stops. This is because MDS only activates when the engine is under light load, so it doesn’t wear out the engine as quickly as it would if MDS was always active.

Q: What are the risks of turning off MDS?

A: There are a few risks associated with turning off MDS on your Ram 1500.

  • Reduced emissions. MDS helps to reduce emissions by running the engine at a more efficient speed. If MDS is turned off, the engine may run at a higher speed, which can increase emissions.
  • Increased noise. MDS helps to reduce noise by shutting down one or more cylinders when the engine is under light load. If MDS is turned off, the engine may be louder, especially at idle.
  • Reduced power. MDS can help to improve performance by reducing engine drag. If MDS is turned off, the engine may feel less responsive and accelerate more slowly.

Q: How do I know if MDS is turned off?

A: There are a few ways to check if MDS is turned off.

  • Check the dashboard. Some Ram 1500 models have a light on the dashboard that indicates whether MDS is active. If the light is off, MDS is turned off.
  • Listen to the engine. If MDS is turned off, you may hear the engine running at a higher speed, especially at idle.
  • Perform a fuel economy test. If you turn off MDS and notice an improvement in fuel economy, it’s likely that MDS was previously active.

Q: Can I turn MDS back on?

A: Yes, you can turn MDS back on if you change your mind. If you used the switch in the cab to turn off MDS, simply flip the switch back to the “On” position. If you used the OBD-II port or a tuner to turn off MDS, you can use the same method to turn it back on.

In this article, we have discussed how to permanently turn off MDS on Ram 1500. We have provided step-by-step instructions on how to do this using the OBD2 scanner and the physical switch. We have also discussed the pros and cons of turning off MDS, and we have provided some tips on how to do this safely.

We hope that this article has been helpful. If you have any further questions, please feel free to contact us.

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