2002 Mazda B4000 Key Fob Battery Replacement Instructions

2002 Mazda B4000 Key Fob Battery Replacement Instructions

If your car keyless entry remote isn't open doors well, the cell battery likely needs to be replaced. In this case, you’ll benefit from knowing how to open your car key fob and change a dead or weak battery yourself. If you choose to do it at home near B4000, follow our guide, but don't forget to check all you need before you start.

What size battery does 2002 Mazda B4000 keyless entry remote required

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

Simple steps to replace the battery in your car's key fob

A tiny button battery installed inside the your remote key fob. Delicately try to open your fob with flat head screwdriver. Change one CR2032 battery with flat head screwdriver.

Get new battery and install it in fob’s body. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

After the new battery installed, verify remote key fob functionality by pressing buttons. If all functions works, assemble your keyless entry fob's shell in reverse order.

At this point squeeze fob’s back cover together. Line your case pieces together and put it in place by hands from top to bottom. Check your fob case for gaps. If it is not firmly closed try to repeat last step.

How to change the battery video instruction

How To Replace Mazda B4000 Key Fob Battery 2000 2009

Still not working? Buy new one

FAQ

Remote key fob of Mazda B4000 use 1xCR2032 batteries. Most CR2032 batteries are under $6 depending on the type, size packaging and brand you buy. Take your old battery to the store, to find a proper replacement.

Key fob in most of cases do not require to be reprogrammed after battery change. If your key fob not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Replacing your key fob battery is simple to do in 2002 Mazda B4000. Most of car manufacturers think about customers and make a special hole for key fob open.

Dealer service price for replace the battery in key is $50-600 depending on the brand.

Keyless entry remote batteries in Mazda B4000 should be replaced once in 4 years, although this will differ based on their amount of use and build quality. If your keyless entry remote decreased signal strength, you should change batteries before it stop open doors and make problems for you.

These symptoms will alert you that it's probably time to change battery in your Mazda B4000: signal strength reduced, you didn't change battery more than 4 years, key fob buttons not working and multiple clicks to unlock or lock doors required.
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Fob Compatibility:

  1. FCC ID: CWTWB1U331
  2. Models: 1999-2009 Mazda B4000