2003 Cadillac CTS Key Fob Battery Replacement Guide

2003 Cadillac CTS Key Fob Battery Replacement Guide

If your CTS remote key fob is not unlock doors perfectly, the battery likely must to be changed. Below, we outlined how to disassembly your key fob and change your Cadillac key battery step by step.

What kind of battery key fob require

Before starting open keyless entry remote check all that you need: CR2032 battery and flat head screwdriver.
  • 1xCR2032 battery
  • flat head screwdriver

Simple steps to change the battery in your car's remote key fob

A tiny coin cell battery installed in the your key fob. Accurately try to pry apart your keyless entry remote with pry tools. Change one CR2032 battery with flat head screwdriver.

Change old battery with new one CR2032. Battery must be placed with the same polarity as was an old. Your key fob will not work if you mistakenly put battery wrong way.

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

At this point squeeze fob’s back cover together. Line your body two halves together and assemble it together by hands from top to bottom. Check your key shell for gaps. If it is not tightly closed try to repeat last step.

Video of remote key fob opening

How To Replace A 2003 - 2007 Cadillac CTS Key Fob Battery FCC ID L2C0005T

Still not working? Buy new one


Key fob of Cadillac CTS use 1xCR2032 batteries. Price for CR2032 batteries are under $5 depending on the type, brand and size packaging you buy. Take your old battery to the store, with you to find a proper replacement.

Keyless entry remote in most of cases do not need to be reprogrammed after battery change. If your remote key fob not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Changing your key fob battery is simple to do in 2003 Cadillac CTS. Most of car manufacturers think of the clients and make a special hole for keyless entry remote disassembly.

Dealer service pricing for replace the battery in key is from $30 to as high as $500 depending on the car.

You should change batteries inside key fob of modern cars at least once in 3-4 years. lifespan of battery differ on usage time, operating conditions and quality. Lithium cells usually will last longer.

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

  1. FCC ID: L2C0005T
  2. Models: 2003-2007 Cadillac CTS