How to Replace the Battery in a 2007 Mercedes-Benz E320 Key Fob

How to Replace the Battery in a 2007 Mercedes-Benz E320 Key Fob

If your car key fob is no longer working properly, the cell battery more likely must to be changed. Below, you will benefit from knowing how to open your car remote key fob and change a dead battery yourself. If you gonna solve to do it at home near E320, follow our guide, but first make sure you have all you need.

What kind of battery keyless entry remote require

Don't forget before disassembly remote key fob check all that you need: flat head screwdriver and 2xCR2025 batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

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

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

Delicately try to disassemble your fob with flat head screwdriver. Replace 2 CR2025 batteries with flat head screwdriver.

Get new batteries and install it inside fob’s shell. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you place battery wrong way.

Before assembling fob’s case, make sure that all functions works by pressing buttons on remote 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. Inspect your key fob case for gaps. If it is not tightly closed try to repeat last step.

Video of key fob opening

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

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Mercedes-Benz E320 require 2xCR2025 batteries. Price for CR2025 batteries are under $6 depending on the brand, size packaging and type you buy. You can take old battery to the store, with you to find a proper replacement.

Key fob 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 keyless entry remote battery is easy to do in 2007 Mercedes-Benz E320. Most of car manufacturers think about customers and make a special hole for key fob open.

The cost to replace the battery in fob is in range from $30 to as high as $500 depending on the brand and the service pricing.

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

These signs will warning you that it's probably time to change battery in your Mercedes-Benz E320: you didn't change battery more than 4 years, signal strength reduced, low key battery indicator on dashboard and multiple clicks to unlock or lock doors required.
Be the first to comment.
Your message is required.

Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2009 Mercedes-Benz E320