How to Replace the Battery in a 2012 Mercedes-Benz E350 Key Fob

How to Replace the Battery in a 2012 Mercedes-Benz E350 Key Fob

If your car key is not unlock doors perfectly, the battery most likely needs to be replaced. In this post, we explained how to open your car keyless entry remote and change your Mercedes-Benz key battery.

What size battery does 2012 Mercedes-Benz E350 keyless entry remote take

Before starting disassembly keyless entry remote 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 key fob

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

Gently try to pry apart your keyless entry remote with pry tools. Replace 2 CR2025 batteries with flat head screwdriver.

Replace old batteries with fresh one CR2025. Be sure to connect the battery the right way around in a circuit. Your keyless entry remote will not work if you place battery wrong way.

When the new batteries installed, verify keyless entry remote functionality by pressing buttons. If everything working fine, assemble your keyless entry fob's body in reverse order.

The last thing to do is put your cover back on fob. Gently try to assemble the pieces in place by hands from top to bottom. If your keyless entry remote body firmly closed, we done. If not, repeat the last step.

Video of remote key fob disassembly

Mercedes 2014 - 2015 Key Battery Replacement E350

Still not working? Buy new one

FAQ

Key fob of Mercedes-Benz E350 use 2xCR2025 batteries. Most CR2025 batteries are under $6 depending on the size packaging, brand and type you buy. You can take old battery to the store, with you to find a proper replacement.

Often, after keyless entry remote battery change, reprogramming not required. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2012 Mercedes-Benz E350 remote key fob yourself. Most difficult part is to disassembly keyless entry fob's case. It's pretty easy with our guide.

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

You should change batteries inside remote key fob of modern cars at least every 4 years. The lifetime of battery differ on their amount of use, operating conditions and quality. Famous brands cells usually will last longer.

If your E350 signal strength reduced, fob's battery more than 4 years old, has low key battery indicator on dashboard or need multiple clicks to unlock or lock doors, in most cases battery change in key fob needed. Currently installed battery is dead or weak with a high probability, but if it's not help to fix issues, fob change or repair needed.
Be the first to comment.
Your message is required.

Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2012 Mercedes-Benz E350