How to Replace the Battery in a 1998 Mercedes-Benz E320 Key Fob

How to Replace the Battery in a 1998 Mercedes-Benz E320 Key Fob

If your Mercedes-Benz keyless entry remote is not unlock doors correct, the cell battery surely needs to be changed. In this post, we explained how to disassembly your car keyless entry remote and replace your Mercedes-Benz key battery step by step.

What kind of battery remote key fob use

Before going to open key fob make sure that you have all recommended tools and materials: flat head screwdriver and two CR2025 batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Step by step instruction

Inside of your keyless entry remote installed tiny coin cell battery. Remove any internal key first, and then try to pry apart the keyless entry remote.

Delicately try to pry apart your remote key fob with hands or flat head screwdriver. Replace 2 CR2025 batteries with flat head screwdriver.

Change old batteries with fresh 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 position on battery, by "+" mark.

Before assembling fob’s case, verify that everything working good by pressing buttons on keyless entry remote.

The last thing to do is put your cover back on fob. Accurately try to put the pieces together by hands from top to bottom. Inspect your remote key fob case for gaps. If it is not tightly closed try to repeat last step.

Video of key disassembly

How To Replace A 1998 - 2006 Mercedes Benz E320 Key Fob Battery FCC ID IYZ VECTOR

Still not working? Buy new one


Remote key fob of Mercedes-Benz E320 require 2xCR2025 batteries. Most CR2025 batteries are under $4 build upon the size packaging, brand and type you buy. You can take old battery to the store, to be sure.

Often, after keyless entry remote battery change, reprogramming not required. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Changing your keyless entry remote battery is easy to do in 1998 Mercedes-Benz E320. Most of car manufacturers think of the customers and make a special hole for key fob open.

Car service cost for replace the battery in fob is $50-600 depending on the car.

Keyless entry remote batteries in Mercedes-Benz E320 should be changed once in 3-4 years, but this will vary based on their amount of use and build quality. If your key fob shortened signal strength, you should change batteries before it stop open doors and make problems for you.

If your Mercedes-Benz signal strength reduced, has low key battery indicator on dashboard, need multiple clicks to unlock or lock doors or fob's battery more than 4 years old, it's probably battery replace in key fob required. Current battery is discharged with a high probability, but if it's not help to fix issues, key fob replace or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  2. Models: 1998-2006 Mercedes-Benz E320