How to Open Your 2005 Infiniti FX45 Key Fob & Change Battery

How to Open Your 2005 Infiniti FX45 Key Fob & Change Battery

Remote key fob grant easy access to your auto. Once the keyless entry remote battery is discharged you will lose your fob’s ability to control distance opportunities. Below, we explained how to disassembly your keyless entry remote and change a dead battery DIY. If you choose to do it at home near FX45, follow our guide, but first make sure you have tools and materials required.

What size battery does 2005 Infiniti FX45 remote key fob required

Changing battery in remote key fob require flat head screwdriver and one CR1620 battery. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.
  • 1xCR1620 battery
  • flat head screwdriver

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

A tiny button battery installed in the your remote key fob. Delicately try to open your keyless entry remote with hands or flat head screwdriver. Change CR1620 battery with flat head screwdriver.

Get new battery and install it in keyless entry fob's shell. 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.

Before assembling fob’s case, check that all functions works by testing buttons on circuit board.

At this point squeeze keyless entry fob's back cover together. Line your body pieces together and assemble it in place by hands from top to bottom. If your fob body firmly closed, we done. If not, repeat the last step.

Key Fob Battery Replacement 2005 Infiniti FX45 Video

How To Replace Infiniti FX45 Key Fob Battery 2003 2004 2005 2006 2007 2008

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Infiniti FX45 use 1xCR1620 batteries. Most CR1620 batteries are under $4-6 depending on the brand, size packaging and type you buy. You can take old battery to the store, to be sure.

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

Yes, you can change battery in your 2005 Infiniti FX45 remote key fob yourself. Most difficult part is to open fob’s case. It's pretty simple with our step by step guide.

The price to change the battery inside key can run anywhere from $30 to as high as $500 depending on the brand and the service station.

You should change batteries inside key fob of modern cars at least once in four years. The lifetime of battery differ on usage time, operating conditions and quality. Famous brands cells normally will last longer.

If your car signal strength reduced, has low key battery indicator on dashboard, need multiple clicks to unlock or lock doors or fob's battery more than 4 years old, it's probably battery change in keyless entry remote needed. Current battery is discharged with a high probability, but if it's not fix problem, key fob replace or repair required.
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Other Infiniti Models:

Fob Compatibility:

  1. FCC ID: CWTWB1U751
  2. Models: 2003-2008 Infiniti FX45