Why Isn't My Key Fob Working After a Battery Change?

December 15 / 2021

Why Isn't My Key Fob Working After a Battery Change?

When your key fob stops working, the most common solution is changing the battery. However, in some cases, the solution to the problem might not be battery change. So there may be other reasons your key fob may not work even after a battery change.

The first step to solving the problem is to handle the key fob circuit with care. If you are not knowledgeable in handling electronics, do not touch the key fob circuit with your bare hands. Call an expert to troubleshoot and fix the problem in no time.

Here are some other reasons the key FOB is not working:

Worn Buttons

The button of a car remote wearing out is bound to happen over time. With the press of the button, the contacts send signals to the circuit board to execute orders. These buttons can wear out, creating a gap with the contacts. One of the best ways to spot worn-out car buttons on car remotes is by pressing the buttons repeatedly.

Check if one of these situations are applicable:

  • Certain buttons or all buttons only work when pressed in a specific way
  • One button works and another does not

If the plastic covering the key fob has also fallen apart, then there is a problem with the car remote. You may use simple tools to open the key fob and check for broken contacts or misaligned buttons. If that does not work, replace the car key fob.

Broken Locks

The lock is another reason your car remote may not work after changing the battery. To confirm if the lock or car door has become problematic, check for these signs.

  • The lock does not open or lock when operated manually or with a key.
  • Remote opens some door locks and not others.
  • The indicator light flashes to show a signal has been sent without doors opening.
  • Door lock moves without fully engaging or disengaging

Spoilt Key

The car key can get spoilt due to certain factors like water, scratches, etc. If the key fob stops working immediately after it was stepped on, dropped in water, or opened then it may be damaged. Other signs to check for include:

  • Whether a spare key works
  • The buttons don't move
  • The Key is visibly broken

Car key replacement is the solution to a spoilt key. The professionals from Colorado Springs Locksmith can help to reprogram the key fob.


There is a high chance that a car remote has been reset during the battery change. The key fob can also reset when you press certain buttons. So, more than one key fob not working is a good signal that the car key remote has been reset. Two signs you should look out for:

  • All spare remotes do not work
  • Car remote stops working entirely

If Your Key FOB Is Not Working, a Pro Can Help

A key fob not working after a battery change can put you in a frenzy, but, the reason for this as stated above can be fixed by calling a locksmith. Colorado Springs Locksmith will send a professional locksmith to attend to you. Give us a call to work on your key fob or car security system.

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