How to Replace the Battery in a 2003 Mercury Grand Marquis Key Fob

How to Replace the Battery in a 2003 Mercury Grand Marquis Key Fob

Key fob grant easy access to your auto. When the key fob battery is weak you lose your fob’s ability to control distance opening function. In this post, we demonstrate how to disassembly your remote key fob and change a dead or weak battery yourself. If you decide to do it at home near Grand Marquis, use this guide, but first make sure you have tools and materials required.

What type battery does 2003 Mercury Grand Marquis key fob take

Before beginning disassembly remote key fob be sure that you have all recommended tools and materials: 1xCR2032 battery and flat head screwdriver.
  • 1xCR2032 battery
  • flat head screwdriver

Simple steps to change the battery in your car's keyless entry remote

A tiny button battery installed inside the your keyless entry remote. Carefully try to disassemble your keyless entry remote with pry tools. Remove 1xCR2032 battery with flat head screwdriver.

Get new battery and install it inside fob’s body. Be sure to connect the battery the right way around in a circuit. Your key will not work if you connect battery wrong way.

Before assembling fob’s case, check that everything working fine by testing buttons on circuit board.

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

Key Fob Battery Replacement 2003 Mercury Grand Marquis Video

DIY: Ford Keyless Remote Battery Replacement & Disassembly

Still not working? Buy new one

FAQ

Remote key fob of Mercury Grand Marquis require 1xCR2032 batteries. Price for CR2032 batteries are under $5 depending on the size packaging, type and brand you buy. Take your old battery to the store, with you to find a proper replacement.

Often, after keyless entry remote battery replace, reprogramming not required. Keyless entry remote reprogramming procedure often described in user's manual of your vehicle.

Replacing your remote key fob battery is easy to do in 2003 Mercury Grand Marquis. Most of car manufacturers think of the clients and make a special hole for remote key fob open.

Dealer service price for replace the battery in keyless entry remote is $50-600 depending on the make.

Key fob batteries in Mercury Grand Marquis should be changed once in 3-4 years, but this will differ based on their amount of use and battery quality. If your keyless entry remote decreased signal strength, you should change batteries before it stop close doors and make problems for you.

If your auto need multiple clicks to unlock or lock doors, fob's battery more than 4 years old, has low key battery indicator on dashboard or signal strength reduced, in most cases battery replace in key fob required. Installed battery is dead with a high probability, but if it's not help, keyless entry remote replace or repair needed.
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Fob Compatibility:

  1. FCC ID: CWTWB1U343 | CWTWB1U313 | CWTW
  2. Models: 1995-2006 Mercury Grand Marquis