How to Open Your 1999 Mazda B3000 Key Fob and Change Battery

How to Open Your 1999 Mazda B3000 Key Fob and Change Battery

If your auto remote key fob is not open doors properly, the cell battery probably needs to be changed. In this post, we walks you through how to open your car keyless entry remote and replace your Mazda key battery step by step.

What type battery does 1999 Mazda B3000 remote key fob required

Replacing battery in 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

Simple steps to change the battery in your B3000's remote key fob

Inside of your keyless entry remote installed small button cell battery. Gently try to open your key fob with hands or flat head screwdriver. Replace CR2032 battery with flat head screwdriver.

Get new battery and install it in keyless entry fob's shell. Battery must be installed with the same polarity as was a previous. Your key will not work if you mistakenly place battery wrong way.

Before assembling keyless entry fob's case, verify that everything is functioning by testing buttons on circuit board.

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. If your remote key fob body firmly closed, we done. If not, repeat the last step.

Video of key fob opening

How To Replace Mazda B3000 Key Fob Battery 1999 2007

Still not working? Buy new one

Frequently Asked Questions

Key fob of Mazda B3000 use 1xCR2032 batteries. Most CR2032 batteries are under $4-6 depending on the type, brand and size packaging you buy. Take your old battery to the store, to be sure.

Often, after key fob battery change, reprogramming not required. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Replacing your key fob battery is easy to do in 1999 Mazda B3000. Most of car manufacturers think of the clients and make a special hole for remote key fob disassembly.

Auto repair shop's pricing for change the battery in key fob is $50-600 depending on the brand.

You should change batteries inside keyless entry remote of modern cars at least once in 4 years. The lifetime of battery vary on their amount of use, operating conditions and quality.

If your auto signal strength reduced, need multiple clicks to unlock or lock doors, fob's battery more than 4 years old or key fob buttons not working, it's probably battery change in key fob needed. Current battery is discharged with a high probability, but if it's not fix problem, key replace or repair needed.
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Fob Compatibility:

  1. FCC ID: CWTWB1U331
  2. Models: 1999-2008 Mazda B3000