How to Replace the Battery in a 2011 Lexus RX 450h Key Fob

How to Replace the Battery in a 2011 Lexus RX 450h Key Fob

Key fob grant access to your car. Once the remote key fob battery is dead you not to be able lock doors from distance. It's not complicated to replace the battery in your remote key fob by yourself. All tools, that you need is described in this article.

What size battery does 2011 Lexus RX 450h keyless entry remote required

Replacing battery in key fob require CR1632 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
  • 1xCR1632 battery
  • flat head screwdriver

Step by step instruction

A small coin battery installed inside the your key fob. Remove any internal key before you try to pry apart the remote key fob.

Gently try to disassemble your keyless entry remote with hands or flat head screwdriver. Change one CR1632 battery with flat head screwdriver.

Get new battery and install it in keyless entry fob's shell. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

Before assembling keyless entry fob's case, check that all functions works by pressing buttons on circuit board.

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

Video of remote key fob disassembly

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

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Lexus RX 450h use 1xCR1632 batteries. Price for CR1632 batteries are under $4 depending on the size packaging, type and brand you buy. You can take old battery to the store, to be sure.

Often, after remote key fob battery replace, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2011 Lexus RX 450h key fob yourself. Most hard part is to disassembly keyless entry fob's case. It's pretty easy with our step by step guide.

The price to change the battery in keyless entry remote can run anywhere from $30 to as high as $500 depending on the brand and the service station.

You should replace batteries inside key fob of modern cars at least once in three or four years. The lifetime of battery differ on frequency of use, operating conditions and quality. Lithium cells normally will last longer.

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

  2. Models: 2010-2015 Lexus RX 450h