2009 Mercury Mountaineer Key Fob Battery Replacement Instructions

2009 Mercury Mountaineer Key Fob Battery Replacement Instructions

If your car key fob isn't open doors well, the battery surely must to be replaced. In this case, you’ll benefit from knowing how to disassembly Mercury remote key fob and replace a dead battery yourself. If you choose to do it at home near Mountaineer, use this instruction, but don't forget to check all you need before you start.

What size battery does 2009 Mercury Mountaineer keyless entry remote take

Before you start to open key fob make sure that you have all recommended tools and materials: flat head screwdriver and CR2032 battery.
  • 1xCR2032 battery
  • flat head screwdriver

Step by step instruction

Inside of your key fob installed tiny button cell battery. Delicately try to open your remote key fob with pry tools. Change 1 CR2032 battery with flat head screwdriver.

Now it's time to install new battery in keyless entry fob's case. Battery must be installed with the same position as was a previous. Your remote key fob will not work if you mistakenly place battery wrong way.

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

The last thing to do is put your cover back on fob. Gently try to put the pieces together by hands from top to bottom. If your key fob body tightly closed, we done. If not, repeat the last step.

How to replace the battery video guide

How To Replace Mercury Mountaineer Key Fob Battery 2008 2009 2010

Still not working? Buy new one

FAQ

Key fob of Mercury Mountaineer use 1xCR2032 batteries. Price for CR2032 batteries are under $4-6 build upon the size packaging, type and brand you buy. You can take old battery to the store, to be sure.

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

Changing your key fob battery is simple to do in 2009 Mercury Mountaineer. Most of car manufacturers think of the clients and make a special hole for key fob disassembly.

Dealer service pricing for change the battery in key fob is $50-600 depending on the car.

Keyless entry remote batteries in Mercury Mountaineer should be replaced once in 4 years, also this will differ based on usage and build quality. If your remote key fob shortened signal strength, you should change batteries before it stop close doors and make trouble for you.

If your car has low key battery indicator on dashboard, fob's battery more than 4 years old, signal strength reduced or need multiple clicks to unlock or lock doors, in most cases battery change in remote key fob needed. Currently installed battery is weak with a high probability, but if it's not help to fix issues, key change or repair required.
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Fob Compatibility:

  1. FCC ID: CWTWB1U322
  2. Models: 2002-2010 Mercury Mountaineer