Replace Key Fob Batteries

How to Open Your 2010 Mercury Mariner Key Fob and Change Battery

How to Open Your 2010 Mercury Mariner Key Fob and Change Battery

Key fob allow easy access to your car. When the key battery is dead or weak you will not to be able close car remotely. In this post, you’ll benefit from knowing how to open your car key fob and replace a dead or weak battery DIY. If you gonna solve to do it at home near Mariner, use this guide, but first make sure you have everything you need.

What type battery does 2010 Mercury Mariner key fob take

Replacing battery in keyless entry remote require one CR2032 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
  • 1xCR2032 battery
  • flat head screwdriver

Step by step instruction

Inside of your remote key fob installed coin battery. Accurately try to disassemble your key fob with hands or flat head screwdriver. Replace CR2032 battery with flat head screwdriver.

Now it's time to install new battery in fob’s case. 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 position on battery, by "+" mark.

Before assembling fob’s case, make sure that all functions works by testing buttons on keyless entry remote.

At this point squeeze fob’s back cover together. Line your case pieces together and assemble it in place by hands from top to bottom. Inspect your remote key fob shell for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video guide

2009 - 2014 Ford Keyfob Remote Battery Replacement

Still not working? Buy new one

Frequently Asked Questions

Key fob of Mercury Mariner use 1xCR2032 batteries. Most CR2032 batteries are under $5 build upon the type, brand and size packaging you buy. You can take old battery to the store, to be sure.

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

Yes, you can replace battery in your 2010 Mercury Mariner remote key fob yourself. Most hard part is to open keyless entry fob's case. It's pretty simple with our instruction.

Car service price for replace the battery in key fob is from 50 to 600 dollars depending on the brand.

Remote key fob batteries in modern cars should be changed every three years, although this will differ based on usage and battery quality. If your keyless entry remote shortened signal strength, you should replace batteries before it stop close doors and make problems for you.

These symptoms will warn you that it's possible time to replace battery in your Mercury Mariner: low key battery indicator on dashboard, you didn't change battery more than 4 years, key fob buttons not working and signal strength reduced.
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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: CWTWB1U331
  2. Models: 2005-2011 Mercury Mariner