1999 Lexus GS 400 Key Fob Battery Replacement Guide

1999 Lexus GS 400 Key Fob Battery Replacement Guide

If your GS 400 keyless entry remote isn't unlock doors properly, the cell battery more likely must to be changed. Below, we outlined how to open your key fob and replace your Lexus key battery.

What type battery remote key fob require

Before starting open remote key fob check all that you need: flat head screwdriver and one CR1616 battery.
  • flat head screwdriver
  • 1xCR1616 battery

Step by step guide

A small coin cell battery installed inside the your key fob. Accurately try to open your key fob with hands or flat head screwdriver. Change one CR1616 battery with flat head screwdriver.

Change old battery with new one CR1616. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you place battery wrong way.

Before assembling fob’s case, verify that all is functioning by testing buttons on remote key fob.

At this point squeeze keyless entry fob's back cover together. Line your case two halves together and put it together by hands from top to bottom. Check your fob shell for gaps. If it is not tightly closed try to repeat last step.

Key Fob Battery Replacement 1999 Lexus GS 400 Video

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

Still not working? Buy new one


Key fob of Lexus GS 400 use 1xCR1616 batteries. Most CR1616 batteries are under $4 depending on the type, brand and size packaging you buy. You can take old battery to the store, with you to find a proper replacement.

Often, after remote key fob battery change, you do not need to reprogram. Don't be scare of this procedure, because often it's described in user's manual.

Changing your key fob battery is easy to do in 1999 Lexus GS 400. Most of car manufacturers think of the clients and make a special hole for remote key fob disassembly.

The cost to change the battery in keyless entry remote is in range from $30 to as high as $500 depending on the car and the service pricing.

Key fob batteries in Lexus GS 400 should be changed once in three or four years, although this will vary based on frequency of use and build quality. If your remote key fob reduced signal strength, you should change batteries before it stop open doors and make trouble for you.

If your car key fob buttons not working, fob's battery more than 4 years old, has low key battery indicator on dashboard or signal strength reduced, it's probably battery change in keyless entry remote required. Currently installed battery is weak with a high probability, but if it's not fix problem, key change or repair required.
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Fob Compatibility:

  1. FCC ID: HYQ1512V
  2. Models: 1998-2000 Lexus GS 400