How to Open Your 2003 Infiniti M45 Key Fob and Change Battery
If your M45 key fob is not unlock doors well, the cell battery more likely needs to be replaced. In this post, we outlined how to disassembly your remote key fob and change your Infiniti key battery step by step.
What type battery keyless entry remote useChanging battery in keyless entry remote require flat head screwdriver and 1xCR2025 battery. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
- flat head screwdriver
- 1xCR2025 battery
Step by step guide
Inside of your remote key fob installed coin cell battery. Delicately try to open your keyless entry remote with pry tools. Remove 1 CR2025 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, make sure that everything working fine by pressing buttons on keyless entry remote.
The last thing to do is put your cover back on fob. Gently try to put the two halves together by hands from top to bottom. Check your key fob body for gaps. If it is not tightly closed try to repeat last step.
How to replace the battery video guide
Infinity Q45 / M45 Key Fob Battery Replacement - EASY DIY
Still not working? Buy new one