2009 Lexus GS 450h Key Fob Battery Replacement Instructions

2009 Lexus GS 450h Key Fob Battery Replacement Instructions

Keyless entry remote allow easy access to your Lexus. If the key fob battery is dead or weak you not to be able close trunk or doors from distance. In this case, you’ll benefit from knowing how to open Lexus keyless entry remote and replace a weak battery yourself. If you decide to do it at home near GS 450h, use this guide, but don't forget to check everything you need before you start.

What type battery does 2009 Lexus GS 450h key fob take

Before you start to disassembly remote key fob make sure that you have all required tools and materials: flat head screwdriver and 1xCR1632 battery.
  • 1xCR1632 battery
  • flat head screwdriver

Step by step guide

Inside of your keyless entry remote installed button cell battery. Remove any internal key before you try to pry apart the keyless entry remote.

Gently try to pry apart your fob with pry tools. Change 1xCR1632 battery with flat head screwdriver.

Replace old battery with new one CR1632. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you put battery wrong way.

Before assembling fob’s case, make sure that everything is functioning by testing buttons on circuit board.

At this point squeeze fob’s back cover together. Line your case pieces together and put it in place by hands from top to bottom. Inspect your fob case for gaps. If it is not tightly closed try to repeat last step.

Video of key opening

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

Still not working? Buy new one


Key fob of Lexus GS 450h require 1xCR1632 batteries. Price for CR1632 batteries are under $5 depending on the size packaging, type and brand you buy. You can take old battery to the store, to find a proper replacement.

Key fob in most of cases do not require to be reprogrammed after battery replace. If your key not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can replace battery in your 2009 Lexus GS 450h remote key fob yourself. Most hard part is to open fob’s case. It's pretty simple with our guide.

The price to change the battery in key can run anywhere from $30 to as high as $500 depending on the brand and the service pricing.

You should replace batteries inside remote key fob of modern cars at least once in four years. The term of battery differ on usage time, operating conditions and quality. Famous brands cells usually will last longer.

If your auto key fob buttons not working, need multiple clicks to unlock or lock doors, has low key battery indicator on dashboard or fob's battery more than 4 years old, in most cases battery replace in keyless entry remote needed. Installed battery is weak or dead with a high probability, but if it's not fix, key replace or repair needed.
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Fob Compatibility:

  2. Models: 2009-2012 Lexus GS 450h