How to Replace the Battery in a 2010 Lexus RX 450h Key Fob

How to Replace the Battery in a 2010 Lexus RX 450h Key Fob

If your RX 450h key fob is not open doors perfectly, the battery most likely must to be changed. Below, we explained how to open Lexus key fob and replace a weak battery DIY. If you choose to do it at home near RX 450h, follow our instruction, but don't forget to check all you need before you start.

What kind of battery keyless entry remote use

Before you start to open key fob check all that you need: 1xCR1632 battery and flat head screwdriver.
  • 1xCR1632 battery
  • flat head screwdriver

Step by step guide

Inside of your keyless entry remote installed small coin cell battery. Move the key out of the way if it is in the remote key fob.

Accurately try to open your key with pry tools. Change 1xCR1632 battery with flat head screwdriver.

Change old battery with new one CR1632. Battery must be placed with the same polarity as was a previous. Your key will not work if you mistakenly put battery wrong way.

After the new battery installed, verify keyless entry remote by pressing buttons. If everything is functioning, assemble your fob’s body in reverse order.

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

How to change the battery video instruction

How to ● Lexus Key Fob Remote Keyless Battery Replace HS, ES, GS, LS, IS, GX, CT

Still not working? Buy new one


Remote key fob of Lexus RX 450h require 1xCR1632 batteries. Most CR1632 batteries are under $4-6 build upon the type, brand and size packaging you buy. Take your old battery to the store, to be sure.

Often, after key battery change, reprogramming not required. Key fob reprogramming procedure often described in user's manual of your vehicle.

Yes, you can replace battery in your 2010 Lexus RX 450h key yourself. Most hard part is to disassembly fob’s case. It's pretty easy with our guide.

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

Keyless entry remote batteries in Lexus RX 450h should be replaced every four years, although this will differ based on usage and battery quality. If your remote key fob shortened signal strength, you should change batteries before it stop close doors and make problems for you.

If your auto signal strength reduced, has low key battery indicator on dashboard, need multiple clicks to unlock or lock doors or key fob buttons not working, in most cases battery change inside remote key fob required. Currently installed battery is weak with a high probability, but if it's not fix, fob replace or repair required.
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Fob Compatibility:

  2. Models: 2010-2015 Lexus RX 450h