How to Replace the Battery in a 2000 Lexus RX 300 Key Fob

How to Replace the Battery in a 2000 Lexus RX 300 Key Fob

If your RX 300 keyless entry remote is no longer unlock doors perfectly, the battery likely must to be replaced. In this case, we explained how to disassembly your car remote key fob and replace a weak or dead battery DIY. If you gonna solve to do it at home near RX 300, use this instruction, but first make sure you have all you need before you start.

What is the battery remote key fob use

Before beginning disassembly keyless entry remote check all that you need: flat head screwdriver and CR1616 battery.
  • flat head screwdriver
  • 1xCR1616 battery

Step by step instruction

A tiny coin cell battery installed inside the your remote key fob. Gently try to disassemble your keyless entry remote with flat head screwdriver. Remove 1 CR1616 battery with flat head screwdriver.

Get new battery and install it inside keyless entry fob's shell. Battery must be placed with the same position as was a previous. Your keyless entry remote will not work if you mistakenly put battery wrong way.

Before assembling fob’s case, check that everything working fine by testing buttons on keyless entry remote.

The last thing to do is put your cover back on fob. Gently try to put the pieces in place by hands from top to bottom. Inspect your remote key fob shell for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video instruction

How to ● Lexus Key Fob Remote Keyless Battery Change/Replace and Broken Casing

Still not working? Buy new one


Remote key fob of Lexus RX 300 use 1xCR1616 batteries. Price for CR1616 batteries are under $4 build upon the size packaging, brand and type you buy. You can take old battery to the store, to be sure.

Often, after key battery replace, you do not need to reprogram. Key fob reprogramming procedure often described in user's manual of your vehicle.

Changing your keyless entry remote battery is easy to do in 2000 Lexus RX 300. Most of car manufacturers think about clients and make a special hole for keyless entry remote open.

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

Key fob batteries in Lexus RX 300 should be replaced once in three or four years, but this will differ based on their amount of use and battery quality. If your remote key fob reduced signal strength, you should change batteries before it stop open doors and make trouble for you.

These signs will alert you that it's probably time to change battery in your Lexus RX 300: low key battery indicator on dashboard, you didn't change battery more than 4 years, signal strength reduced and key fob buttons not working.
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Fob Compatibility:

  1. FCC ID: N14TMTX-1
  2. Models: 1999-2003 Lexus RX 300