Mitsubishi Keyless Entry Remote Key Fob Battery Replacement
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Can’t lock or unlock your Mitsubishi due to a dead remote battery? Learn how to resolve the issue by replacing your Mitsubishi key fob battery. This guide provides instructions on changing the battery on your keyless entry remote/key fob on a 2019 Mitsubishi Outlander. Various factors may have caused the key fob on your Mitsubishi to stop working.
The most common reason is that the battery has died. Attempting to replace the key fob battery is easy and cheap. It can be done with basic tools and with no automotive knowledge. Try to replace your own key fob battery a go before having to take the vehicle in for a diagnosis and service, which can be pricey and leave you out of a car for days.
Symptoms
Common causes of a bad key fob/keyless entry remote:
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- The battery in the remote has died.
- The remote has failed, oftentimes due to wear or moisture
- The fuse for the remote system in the vehicle has blown.
- The keyless entry system module or wiring has failed or malfunctioned.
What you will need
Tools
- Flathead screwdriver
- Plastic opening pry tool or pick
Parts
- Cr2032 Lithium Ion Coin Battery
Procedure
- A flathead screwdriver is essential for prying open between the key fob’s seams. To avoid scratching the key fob housing, use a screwdriver made of plastic rather than metal. Pry apart the key fob by twisting the small seam. Work around the seams until the key fob separates.
- Once the fob is apart, the battery is exposed. Pry up on the end of the battery that is not held down by the two plastic tabs. Then, pull the battery out.
- Ensure the metal contacts where the battery touches have plenty of spring and are not worn flat due to use. Pull the metal tab carefully to bring it forward to make better contact with the battery.
- Replace the battery with the correct and exact size. In this case, it is a cr2032 coin battery. Slide the battery into the two plastic tabs that hold the top of the battery down, and then push down to secure it. Be careful and do it in this order. Pushing the battery down on top of the plastic tabs can break them, and the battery will no longer be able to stay in place.
- Reinstall back the casing of the key fob in place. Ensure the rubber seal is still in its correct place and not damaged. This rubber seal helps prevent water or moisture from entering the intricate electrical circuit board inside the key. Press the casing back into place and work around the entire key until it is completely snapped and back together.
- Test to ensure the key fob is working, and then you are done!
Vehicle Applications
Listed here are all Mitsubishi models and years from 2012 to 2021; this article is applicable to:
- Galant
- Lancer Evo
- Outlander
- Eclipse
- Mirage and more
I replaced my key fob. Do I need to have it programmed at the dealer?
Yes, that is correct. A new remote will need to be reprogrammed. Usually, due to restrictions on the software used for reprogramming these vehicles’ computers, the car will also have to be taken to a dealer. However, aftermarket software and professional tools may be able to perform these functions.
For more help with your Mitsubishi, check these troubleshooting and repair guides.
