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While choosing the full-size pick-up truck, you will find the 2012 Dodge Ram model as one of the best due to its smooth ride, classy cabin, and enough storage. However, all your cash and efforts will be in the drain if the trailer brake controller of your 2012 dodge ram model becomes faulty on the road. A properly functioning trailer brake controller is necessary for a safe towing experience. If you find any sign that your 2012 dodge ram trailer brake controller is in trouble, you are in the right place. 

Check for electrical connections, brake lever, fuse, battery, and lock-up. Once you find the problem, fix it accordingly. You may need to repair or replace different parts to get your trailer back on the road.

However, for a permanent solution, you need a helpful guide. Keep reading, I will teach you can troubleshoot brake controller problems. Let’s explore.

Common Problems With Dodge Ram Trailer Brake Controllers

The brake controller of your Dodge Ram models performs excellently. However, due to several causes, you may experience Dodge Ram brake controller problems. Here I have listed a few major problems that you may experience.

  1. Electrical connection issues
  2. Faulty brake lever
  3. Blown fuse
  4. Drain battery
  5. Brake lock-up

2012 Dodge Ram Trailer Brake Controller Problems & Solutions

2012 Dodge Ram Trailer Brake Controller Problems
2012 Dodge Ram Trailer Brake Controller Problems

Trailer brake controller problems can be dangerous if you do not fix them immediately. So, I am sharing some common symptoms that tell you you have a problem with the brake controller.

Common Symptoms for Dodge Ram Trailer Brake Controller Problems:

There are the following common signs that warn you of Dodge Ram trailer brake controller problems:

  1. The warning light for the brake on the dashboard indicates an issue with the brake controller.
  2. The trailer brake is not functioning correctly. You may experience disengagement or brake failure.
  3. The braking may feel uneven, with the trailer brakes applying more or less pressure than the vehicle brakes.
  4. The trailer brakes may engage after a delay or cause a jerky stop.
  5. The brake controller overheats, leading to a shutdown of the brake system.
  6. The brake controller displays error messages on the dashboard, indicating a problem with the system.

You may also experience the above symptoms when you have a problem with Ford integrated brake controller.

Problem 1: Electrical Connections Problem

Electrical connection problems are one of the most occurring problems for brake controller issues. You have to check for all possible electrical connection issues to remove the brake controller issue. 

Electrical connection problems are also a common cause for the brake controller not working with pedals and what causes brake calipers not to release.


  1. First, check the wiring connections from the trailer to the brake controller. Also, check the ground wire. Look for damaged or loose wires, and ensure all connections are tight.
  2. Next, check the brake controller for any physical damage or malfunction. If there are any visible problems, replace the controller.
  3. Test the brake controller output voltage by using a multimeter. I recommend the Etekcity Digital Multimeter for testing. It is compatible with AC and DC voltage.  If the voltage is not within the recommended range, the controller may need to be replaced.

Problem 2: Faulty Brake Lever

A faulty brake lever is one of the most reported problems for the Dodge Ram brake controller problems. If the lever is faulty, it cannot signal to the brake controller. So fix the lever to get rid of the problem.

A faulty brake lever is also a common cause for reverse brake assist not available.


  1. Located the brake lever near the brake controller under the dashboard. 
  2. Inspect the brake lever to determine whether it is damaged, loose, or stuck.
  3. Disconnect the battery of the trailer brake controller to ensure safety.
  4. Remove the brake lever by unscrewing it from the controller.
  5. Repair or replace the brake lever.
  6. Reinstall the brake lever onto the controller and secure it tightly.
  7. Reconnect the battery to the trailer brake controller.
  8. Test the trailer brake controller to ensure it is working fine.

Problem 3: Blown Fuse

A fuse is essential for powering the trailer brake controller. It may blow due to electrical shock or other reasons. If it is blown, the brake controller cannot get the power. So check for the fuse and replace it to return to the road.


  1. Check for the fuse in the fuse box
  2. The fuse box is under the dashboard
  3. First, look at the diagram outside the box to learn about the brake controller fuse.
  4. Then open the fuse box and check for the fuse
  5. If the fuse is blown, remove it
  6. Install the new fuse and test the brake controller to ensure problem fixing.

Problem 4: Drain Battery

Draining batteries can also be the culprit for ram trailer brake controller problems. If the battery drains, the brake controller cannot get the power to execute its function. Test the battery and recharge or replace it as needed.


  1. Look for the battery under the dashboard near the engine compartment
  2. Disconnect the battery to test its power
  3. Connect the battery with the multimeter and check the voltage on the display screen.
  4. If it is less than 12V, recharge it for at least 20 minutes.
  5. After 20 minutes, retest the battery; reinstall it if the voltage is okay. Otherwise, the battery is dead, and it needs replacement. You have many options, but I recommend ACDelco Gold 48AGM. It is easy to install, affordable, and has a long-lasting lifespan. 
  6. Once replaced, test the brake controller’s functioning. If the problem still exists, go for the next problem.

Problem 5: Brake Lock-up

Brake lock-up is another problem that may stop the brake controller from executing its functions. Fixing the brake lock-up problem is tricky. You need to check for various things to remove the problem.


  1. First, check the brake controller settings to ensure they are properly adjusted.
  2. Then inspect the trailer brakes to ensure they are properly adjusted and not sticking.
  3. Next, check the wiring and connections between the brake controller and the trailer brakes. Repair or tighten the connections as needed.
  4. Inspect brake fluid levels and lines for blockage, leaks, or damage.  Refill, clean, repair, or replace as needed.
  5. Now test the brake controller and make sure it is working fine.

You may also like: Can you use brake cleaner instead of starting fluid?

How to Reset The Ram Trailer Brake Controller Settings?

Resetting the RAM trailer brake controller is a simple process that can be done in just a few steps:

  1. Locate the brake controller under the dashboard of your RAM truck.
  2. Locate the small reset button on the brake controller.
  3. Press and hold the reset button for 10 seconds.
  4. Release the button and wait for the brake controller to reset.
  5. Test the brake controller to ensure it is functioning properly.

Frequently Asked Questions (FAQs):

How many amps does a Dodge Ram brake controller need?

The amperage required for a Dodge Ram brake controller varies based on the model and type of controller used. Usually, it is 3.2 amps.  But it is better to consult the owner’s manual or take help from a certified technician.

Why does my brake controller drain a battery?

A brake controller may drain a battery if it is not wired correctly or the system has a fault. When the brake controller is on, it can get power from the battery even when the vehicle is turned off.

How much is to fix ram trailer brake controller problems?

The cost to fix RAM trailer brake controller problems can vary depending on the specific issue and the extent of the repair needed. But it typically ranges from $100 to $300. 

Why is the Dodge Ram trailer brake controller not working?

The Dodge Ram trailer brake controller may not work for various reasons, such as a blown fuse, faulty wiring, or a malfunctioning brake controller module. However, you may need to check for all possible problems for a permanent solution to know the cause.


Troubleshooting 2012 Dodge Ram trailer brake controller problems can be a challenging task. But it can be solved by identifying the cause and following the solutions provided. Whatever problem you have, fixing issues promptly can ensure safe and enjoyable towing experiences.

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