How to Open Your 2003 Chrysler 300M Key Fob & Change Battery

How to Open Your 2003 Chrysler 300M Key Fob & Change Battery

Remote key fob grant easy access to your Chrysler. If the key battery is discharged you not to be able close trunk or doors from distance. Below, we outlined how to open your remote key fob and replace your Chrysler key battery.

What is the battery keyless entry remote require

Prior to disassembly keyless entry remote make sure that you have all required tools and materials: CR2016 batteries and flat head screwdriver.
  • 2xCR2016 batteries
  • flat head screwdriver

Step by step instruction

A tiny coin cell battery installed in the your remote key fob. Carefully try to disassemble your key with hands or flat head screwdriver. Change 2 CR2016 batteries with flat head screwdriver.

Change old batteries with fresh one CR2016. 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 polarity on battery, by "+" mark.

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

At this point squeeze fob’s back cover together. Line your shell pieces together and assemble it in place by hands from top to bottom. If your key fob case tightly closed, we done. If not, repeat the last step.

Video of keyless entry remote opening

Chrysler 300 Key Fob Battery Replacement (1999 - 2004)

Still not working? Buy new one


Keyless entry remote of Chrysler 300M use 2xCR2016 batteries. Most CR2016 batteries are under $4 build upon the brand, size packaging and type you buy. Take your old battery to the store, to find a proper replacement.

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

Changing your remote key fob battery is easy to do in 2003 Chrysler 300M. Most of car manufacturers think about clients and make a special hole for key fob open.

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 Chrysler 300M at least every 3-4 years. The lifetime of battery differ on usage time, operating conditions and quality.

If your auto fob's battery more than 4 years old, need multiple clicks to unlock or lock doors, signal strength reduced or key fob buttons not working, it's probably battery replace in keyless entry remote needed. Current battery is discharged with a high probability, but if it's not fix, remote key fob replace or repair required.
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Fob Compatibility:

  1. FCC ID: GQ43VT17T
  2. Models: 2001-2004 Chrysler 300M