How to Open Your 2004 Infiniti Q45 Key Fob and Change Battery

How to Open Your 2004 Infiniti Q45 Key Fob and Change Battery

If your Q45 key fob is no longer working well, the cell battery most likely must to be changed. In this post, we walks you through how to disassembly your car key fob and replace your Infiniti key battery step by step.

What is the battery keyless entry remote use

Before beginning open remote key fob be sure that you have all recommended tools and materials: one CR2025 battery and flat head screwdriver.
  • flat head screwdriver
  • 1xCR2025 battery

Simple steps to replace the battery in your Q45's key fob

Inside of your keyless entry remote installed coin battery. Accurately try to open your keyless entry remote with pry tools. Replace 1xCR2025 battery with flat head screwdriver.

Change old battery with new one CR2025. 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 keyless entry fob's case, check that all is functioning by pressing buttons on remote key fob.

The last thing to do is put your cover back on fob. Carefully try to put the two halves in place by hands from top to bottom. If your key fob shell tightly closed, we done. If not, repeat the last step.

Video of keyless entry remote disassembly

Infinity Q45 / M45 Key Fob Battery Replacement - EASY DIY

Still not working? Buy new one


Key fob of Infiniti Q45 require 1xCR2025 batteries. Most CR2025 batteries are under $5 build upon the type, size packaging and brand you buy. Take your old battery to the store, to find a proper replacement.

Usually, after keyless entry remote battery replace, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Changing your remote key fob battery is easy to do in 2004 Infiniti Q45. Most of car manufacturers think about customers and make a special hole for remote key fob disassembly.

Auto repair shop's price for replace the battery in key is from $30 to as high as $500 depending on the car.

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

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 replace inside keyless entry remote needed. Currently installed battery is dead or weak with a high probability, but if it's not help, key change or repair required.
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Other Infiniti Models:

Fob Compatibility:

  2. Models: 2002-2006 Infiniti Q45