2003 Infiniti FX35 Key Fob Battery Replacement Guide

2003 Infiniti FX35 Key Fob Battery Replacement Guide

If your Infiniti keyless entry remote is no longer working well, the battery surely needs to be replaced. It's not complicated to change the battery in your remote key fob by yourself. All you need is explained in this article.

What kind of battery key fob require

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

Simple steps to replace the battery in your FX35's key fob

A small coin battery installed inside the your remote key fob. Accurately try to open your key with hands or flat head screwdriver. Replace CR1620 battery with flat head screwdriver.

Get new battery and install it in fob’s case. Battery must be placed with the same position as was a previous. Your key fob will not work if you by mistake put battery wrong way.

Before assembling fob’s case, check that all functions works by pressing buttons on keyless entry remote.

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

Key Fob Battery Replacement 2003 Infiniti FX35 Video

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Still not working? Buy new one


Key fob of Infiniti FX35 use 1xCR1620 batteries. Most CR1620 batteries are under $4 depending on the type, size packaging and brand you buy. Take your old battery to the store, to be sure.

Usually, after keyless entry remote battery change, you do not need to reprogram. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Yes, you can replace battery in your 2003 Infiniti FX35 remote key fob yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty easy with our instruction.

The cost to replace the battery in key fob is $50-600 depending on the brand and the service pricing.

Remote key fob batteries in modern cars should be replaced once in 4 years, also this will differ based on their amount of use and battery quality. If your remote key fob decreased signal strength, you should replace batteries before it stop working and make trouble for you.

If your car signal strength reduced, fob's battery more than 4 years old, need multiple clicks to unlock or lock doors or key fob buttons not working, in most cases battery replace in remote key fob needed. Installed battery is discharged with a high probability, but if it's not fix problem, key change or repair needed.
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Other Infiniti Models:

Fob Compatibility:

  1. FCC ID: CWTWB1U751
  2. Models: 2003-2009 Infiniti FX35