How to Replace the Battery in a 2008 Mercedes-Benz R320 Key Fob

How to Replace the Battery in a 2008 Mercedes-Benz R320 Key Fob

Key fob allow easy access to your auto. When the remote key fob battery is discharged you will lose your keyless entry fob's ability to use distance opening function. In this article, we explained how to open your car key fob and replace your Mercedes-Benz key battery.

What type battery key fob require

Prior to open key fob be sure that you have all required tools and materials: CR2025 batteries and flat head screwdriver.
  • 2xCR2025 batteries
  • flat head screwdriver

Simple steps to replace the battery in your R320's keyless entry remote

Inside of your key fob installed small coin battery. Move the key out of the way if it is in the keyless entry remote.

Gently try to open your keyless entry remote with flat head screwdriver. Remove 2xCR2025 batteries with flat head screwdriver.

Replace old batteries with new one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

Before assembling fob’s case, check that all working fine by testing buttons on key fob.

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

Key Fob Battery Replacement 2008 Mercedes-Benz R320 Video

SOLVED - Mercedes Benz Keyfob Battery Replacement | Smart Key Fob Dead Batteries

Still not working? Buy new one

Frequently Asked Questions

Key fob of Mercedes-Benz R320 use 2xCR2025 batteries. Price for CR2025 batteries are under $4-6 build upon the brand, size packaging and type you buy. Take your old battery to the store, to be sure.

Key fob in most of cases do not require to be reprogrammed after battery change. If your key 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 2008 Mercedes-Benz R320 key fob yourself. Most hard part is to open fob’s case. It's pretty easy with our instruction.

Dealer service cost for replace the battery in keyless entry remote is from $30 to as high as $500 depending on the make.

Remote key fob batteries in modern cars should be replaced once in three or four years, although this will vary based on their amount of use and quality. If your key fob decreased signal strength, you should change batteries before it stop working and make problems for you.

These symptoms will warning you that it's possible time to replace battery in your 2008 Mercedes-Benz R320: signal strength reduced, key fob buttons not working, you didn't change battery more than 4 years and multiple clicks to unlock or lock doors required.
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Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2009 Mercedes-Benz R320