How To Reset Your Jeep ECM (Engine Control Module)

How To Reset Your Jeep ECM

The Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ”  which  we covered it in details. Here is a little summary of it , the ECM is the brain of the vehicle and just like everything else you’re going to have to reset it and test it to make sure it’s in a great working condition. To reset your Jeep ECM you’re going to have to follow a couple of easy steps and you’ll be done before you even know it.

The handy list : 

  1. Time needed : Approximately 30 minutes
  2. Gloves
  3. Timer
  4.  Back up power source ( Just in case you have an old battery )

Warning : Do not allow your battery terminals to bridge. Make sure that the terminals are safely placed aside and not touching anything. 

 Instructions on How to reset your Jeep ECM

1-  Make sure that everything is set to off. I.E( Headlights,Radio,AC/Heat, If you have a sunroof make sure that it is also shut)

Negative battery terminal Jeep ECM (black )

2- Disconnect the negative terminal from the battery using a wrench or a socket that fits, you should leave it unplugged for approximately 5-10 minutes.

3-  Once the time has passed you should now turn the headlights “on” and “off” twice to drain the Engine Control Module from any remaining power.

4- Now plug back in the negative terminal and your Jeep ECM should now be reset.

To finish off this post , here are a couple of things you should keep in mind. Resetting your Jeep ECM will not have any effect on your vehicle’s mileage, Resetting it should not cause any issues between your other module so feel free to this as many time as you want if you’re trying to diagnose a problem with your car.

For good measure. Anytime that you reset your Jeep PCM you should keep in mind that you will need to drive your car for approximately 10-15 miles so your Jeep ECM can re-learn your driving habits and fuel management.

Good luck with your reset and be sure to share this with anyone that might be in need of it!

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