Replace Key Fob Batteries

2009 Mercury Marquis Key Fob Battery Replacement Instructions

2009 Mercury Marquis Key Fob Battery Replacement Instructions

If your Mercury remote key fob is not unlock doors perfectly, the battery more likely must to be replaced. Below, we explained how to open your key fob and replace your Mercury key battery step by step.

What size battery does 2009 Mercury Marquis remote key fob required

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

Simple steps to replace the battery in your Marquis's key fob

Inside of your key fob installed small button battery. Carefully try to disassemble your key fob with hands or flat head screwdriver. Remove one CR2032 battery with flat head screwdriver.

Change old battery with new one CR2032. Be sure to connect the battery the right way around in a circuit. Your keyless entry remote will not work if you connect battery wrong way.

When the new battery installed, verify remote key fob by pressing buttons. If everything is functioning, assemble your keyless entry fob's body in reverse order.

The last thing to do is put your cover back on fob. Delicately try to assemble the two halves in place by hands from top to bottom. If your remote key fob case firmly closed, we done. If not, repeat the last step.

Key Fob Battery Replacement 2009 Mercury Marquis Video

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Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Mercury Marquis require 1xCR2032 batteries. Price for CR2032 batteries are under $4 depending on the brand, type and size packaging you buy. You can take old battery to the store, to be sure.

Keyless entry remote in most of cases reprogramming not needed after battery change. If your key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Changing your remote key fob battery is easy to do in 2009 Mercury Marquis. Most of car manufacturers think about clients and make a special hole for remote key fob open.

The cost to replace the battery inside keyless entry remote can run anywhere from $30 to as high as $500 depending on the make and the service pricing.

Keyless entry remote batteries in modern cars should be replaced every three years, although this will vary based on frequency of use and quality. If your key fob shortened signal strength, you should replace batteries before it stop close doors and make trouble for you.

These signs will warning you that it's possible time to change battery in your Mercury Marquis: you didn't change battery more than 4 years, multiple clicks to unlock or lock doors required, signal strength reduced and low key battery indicator on dashboard.
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Contents:

  1. Battery Size and Tools
  2. Replacement Guide
  3. Video Instruction
  4. FAQ

Other Mercury Models:

Fob Compatibility:

  1. FCC ID: CWTWB1U322
  2. Models: 2007-2011 Mercury Marquis