How to Replace the Battery in a 2000 Ford Mustang Key Fob

How to Replace the Battery in a 2000 Ford Mustang Key Fob

Key fob allow access to your auto. If the key battery is weak you’ll not to be able lock trunk or doors from distance. In this case, we explained how to open your car remote key fob and replace a weak battery yourself. If you choose to do it at home near Mustang, use this guide, but first make sure you have tools and materials required before you start.

What is the battery key fob use

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

Simple steps to replace the battery in your Mustang's keyless entry remote

A tiny button battery installed in the your remote key fob. Gently try to pry apart your fob with hands or flat head screwdriver. Replace 1xCR2032 battery with flat head screwdriver.

Replace old battery with new 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 polarity on battery, by "+" mark.

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

The last thing to do is put your cover back on fob. Accurately try to put the pieces in place by hands from top to bottom. Check your fob shell for gaps. If it is not tightly closed try to repeat last step.

Key Fob Battery Replacement 2000 Ford Mustang Video

DIY: Ford Keyless Remote Battery Replacement & Disassembly

Still not working? Buy new one


Key fob of Ford Mustang require 1xCR2032 batteries. Price for CR2032 batteries are under $5 build upon the size packaging, brand and type you buy. Take your old battery to the store, to find a proper replacement.

Remote key fob in most of cases reprogramming not required after battery change. If your key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can replace battery in your 2000 Ford Mustang key fob yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty simple with our instruction.

Auto repair shop's pricing for replace the battery in keyless entry remote is from $30 to as high as $500 depending on the brand.

You should replace batteries inside remote key fob of modern cars at least every three or four years. The lifetime of battery differ on usage time, quality and operating conditions.

These signs will alert you that it's possible time to change battery in your 2000 Ford Mustang: low key battery indicator on dashboard, signal strength reduced, key fob buttons not working and multiple clicks to unlock or lock doors required.
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Fob Compatibility:

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