How to Open Your 2012 Infiniti M35h Key Fob and Change Battery

How to Open Your 2012 Infiniti M35h Key Fob and Change Battery

Key fob allow easy access to your Infiniti. When the remote key fob battery is weak you will not to be able lock trunk or doors remotely. Yes, it is possible to replace the battery in your remote key fob by yourself. Everything you need is outlined in this post.

What is the battery keyless entry remote use

Prior to disassembly keyless entry remote be sure that you have all recommended tools and materials: flat head screwdriver and one CR2025 battery.
  • flat head screwdriver
  • 1xCR2025 battery

Simple steps to change the battery in your M35h's key fob

Inside of your remote key fob installed tiny coin cell battery. Carefully try to open your key fob with flat head screwdriver. Remove 1 CR2025 battery with flat head screwdriver.

Get new battery and install it in fob’s body. Be sure to connect the battery the right way around in a circuit. Your keyless entry remote will not work if you place battery wrong way.

Before assembling keyless entry fob's case, make sure that all functions works by testing buttons on keyless entry remote.

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. Check your fob case for gaps. If it is not tightly closed try to repeat last step.

Video of key fob opening

How To Change An Infiniti Key Fob Battery-Tutorial

Still not working? Buy new one


Key fob of Infiniti M35h require 1xCR2025 batteries. Most CR2025 batteries are under $5 depending on the brand, size packaging and type you buy. You can take old battery to the store, with you to find a proper replacement.

Key fob in most of cases reprogramming not needed after battery replace. If your keyless entry remote not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can replace battery in your 2012 Infiniti M35h keyless entry remote yourself. Most difficult part is to open keyless entry fob's case. It's pretty easy with our guide.

The cost to change the battery in key fob is $50-600 depending on the car and the service station.

Keyless entry remote batteries in Infiniti M35h should be changed every 4 years, also this will differ based on their amount of use and battery quality. If your keyless entry remote shortened signal strength, you should change batteries before it stop open doors and make trouble for you.

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

Fob Compatibility:

  1. FCC ID: CWTWB1U787
  2. Models: 2012-2013 Infiniti M35H