Troubleshooting Mitsubishi ABS Light Service Required

Mitsubishi ABS light comes on when the ABS module malfunctions.

In most cases, the problem is due to a defective or dirty wheel speed sensor. Reading fault codes from the ABS module is required to find the root of the problem.

In this guide, you will learn about common problems that trigger Mitsubishi ABS service required warning.

In addition, you will earn how to read ABS fault codes yourself using a Mitsubishi scanner. 

What does ABS light mean on Mitsubishi? 

Mitsubishi abs warning light on

If you notice that the ABS light is staying on, it means that the Anti-lock Brake System (ABS) has detected a problem and is no longer working properly. 

When your ABS module is disabled your vehicle may take longer to come to a complete stop under hard braking situations. The wheels of your vehicle may lock up and your vehicle may skid if you brake too hard. 

Traction control and stability control light 

  • You may see those warning lights come on as well. These systems depend on the ABS system to function so they get turned off when there is a problem with the ABS system.¬†

Symptoms

  • ABS light on
  • Traction control light staying¬†on
  • 4WD light staying¬†on¬†
  • ABS Service Required warning message

Traction control, Stability, 4WD depend on ABS module to function properly. These lights may come on in addition to the ABS light. 

Diagnose Mitsubishi ABS problems

To find out why your ABS service required warning is coming up you will need a Mitsubishi scanner that can read fault codes from the ABS module. Most generic OBD2 scanners cannot read ABS fault codes. 

The procedure for reading and clearing Mitsubishi ABS light is very simple.

  1. Plug in the scanner into the OBD2 port under the dashboard. Mitsubishi OBD2 port

     

  2. Turn on the ignition. You don't need to start the engine. ignition on

     

  3. Allow the scanner to power up and press scan or enter, depending on the scanner. troubleshoot Mitsubishi abs light

     

  4. Select your Mitsubishi model. Go to ABS control module.  Scroll to Read Codes and press enter. 

These instructions may vary slightly depending on the scanner that you are using. 

Common Causes

dirty abs sensor

Wheel speed sensor

A common problem that causes Mitsubishi ABS light to come on. In less than 30 minutes, you can remove the ABS sensor and clean it. The problem is that without reading the fault codes, you will know which ABS sensor is dirty.

Read the fault codes with a Mitsubishi scanner to find out which sensor is the issue. If you don't have a scanner, you will have to remove all the sensors and clean them. Follow this guide to learn how to replace it if you determine yours is defective.  

Mitsubishi fuses

Blown ABS fuse or defective ABS relay

Check the fuse for the ABS in the main fuse box in the engine bay. If the ABS fuse keeps blowing it indicates a problem with the ABS pump. Replace the ABS relay or swap it with one that you know works. 

Bad abs module triggers abs warning light on Mitsubishi lancer outlander eclipse galant mirage

Defective ABS module

The ABS module itself may fail. 

Other possible issues

  • low brake fluid,
  • steering angle sensor defective or needs re-calibration
  • defective brake light switch,
  • low battery voltage,
  • bad ground connection.¬†
Vehicle

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