2003 Lexus IS 300 Key Fob Battery Replacement Guide

2003 Lexus IS 300 Key Fob Battery Replacement Guide

Remote key fob allow easy access to your IS 300. Once the keyless entry remote battery is discharged you’ll lose your keyless entry fob's ability to control remote opening function. Below, we are going to tell you how to disassembly your remote key fob and replace a dead or weak battery DIY. If you gonna solve to do it at home near IS 300, follow our instruction, but first make sure you have tools and materials required.

What kind of battery remote key fob use

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

Step by step instruction

A tiny coin battery installed inside the your remote key fob. Move the key out of the way if it is in the key fob.

Carefully try to open your key fob with pry tools. Replace 1 CR1616 battery with flat head screwdriver.

Replace old battery with new one CR1616. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

When the new battery installed, check keyless entry remote by pressing buttons. If all functions works, assemble your fob’s body in reverse order.

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

Key Fob Battery Replacement 2003 Lexus IS 300 Video

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

Still not working? Buy new one

Frequently Asked Questions

Key fob of Lexus IS 300 require 1xCR1616 batteries. Price for CR1616 batteries are under $4-6 depending on the type, size packaging and brand you buy. Take your old battery to the store, to be sure.

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

Yes, you can change battery in your 2003 Lexus IS 300 remote key fob yourself. Most hard part is to disassembly keyless entry fob's case. It's pretty easy with our step by step guide.

Auto repair shop's pricing for change the battery in fob is $50-600 depending on the car.

You should replace batteries inside remote key fob of modern cars at least once in 4 years. The lifetime of battery vary on frequency of use, quality and operating conditions. Lithium cells normally will last longer.

If your car fob's battery more than 4 years old, has low key battery indicator on dashboard, key fob buttons not working or signal strength reduced, in most cases battery replace in keyless entry remote needed. Current battery is dead or weak with a high probability, but if it's not help, key fob replace or repair needed.
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Fob Compatibility:

  1. FCC ID: HYQ1512V
  2. Models: 2001-2005 Lexus IS 300