How to Open Your 2005 Ford Mustang Key Fob & Change Battery

How to Open Your 2005 Ford Mustang Key Fob & Change Battery

Remote key fob allow access to your Mustang. When the key battery is weak or dead you’ll not to be able open doors remotely. In this post, we explained how to open your keyless entry remote and replace your Ford key battery step by step.

What is the battery keyless entry remote use

Changing battery in remote key fob require flat head screwdriver and 1 CR2032 battery. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
  • 1xCR2032 battery
  • flat head screwdriver

Step by step instruction

A button cell battery installed inside the your keyless entry remote. Gently try to open your keyless entry remote with flat head screwdriver. Change 1 CR2032 battery with flat head screwdriver.

Replace old battery with fresh one CR2032. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

When the new battery installed, check key fob functionality by pressing buttons. If everything working properly, assemble your keyless entry fob's shell in reverse order.

The last thing to do is put your cover back on fob. Delicately try to put the two halves together by hands from top to bottom. Inspect your keyless entry remote body for gaps. If it is not firmly closed try to repeat last step.

Key Fob Battery Replacement 2005 Ford Mustang Video

DIY: Ford Keyless Remote Battery Replacement & Disassembly

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Ford Mustang use 1xCR2032 batteries. Price for CR2032 batteries are under $6 depending on the brand, type and size packaging you buy. You can take old battery to the store, to be sure.

Usually, after key battery change, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Replacing your remote key fob battery is simple to do in 2005 Ford Mustang. Most of car manufacturers think of the customers and make a special hole for keyless entry remote open.

The price to change the battery inside fob is in range $50-600 depending on the make and the service pricing.

You should replace batteries inside keyless entry remote of Ford Mustang at least once in 3-4 years. The term of battery differ on their amount of use, operating conditions and quality.

These symptoms will alert you that it's possible time to replace battery in your 2005 Ford Mustang: key fob buttons not working, multiple clicks to unlock or lock doors required, signal strength reduced and low key battery indicator on dashboard.
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Fob Compatibility:

  1. FCC ID: CWTWB1U322
  2. Models: 1999-2012 Ford Mustang