How to Replace the Battery in a 2007 Mercedes-Benz C350 Key Fob

How to Replace the Battery in a 2007 Mercedes-Benz C350 Key Fob

Key fob allow access to your car. Once the remote key fob battery is weak you lose your keyless entry fob's ability to use remote opening function. It's not difficult to change the battery in your remote key fob DIY. All tools, that you need is described in this article.

What kind of battery remote key fob use

Don't forget before open keyless entry remote make sure that you have all required tools and materials: flat head screwdriver and CR2025 batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Step by step guide

A button battery installed inside the your remote key fob. Move the key out of the way if it is in the key fob.

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

Change old batteries with new one CR2025. Battery must be installed with the same polarity as was a previous. Your keyless entry remote will not work if you mistakenly put battery wrong way.

Before assembling keyless entry fob's case, make sure that everything working fine by pressing buttons on remote key fob.

At this point squeeze fob’s back cover together. Line your body two halves together and put it in place by hands from top to bottom. If your fob body tightly closed, we done. If not, repeat the last step.

Key Fob Battery Replacement 2007 Mercedes-Benz C350 Video

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 C350 use 2xCR2025 batteries. Most CR2025 batteries are under $5 depending on the type, size packaging and brand you buy. You can take old battery to the store, to find a proper replacement.

Key fob in most of cases do not need to be reprogrammed after battery change. 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 change battery in your 2007 Mercedes-Benz C350 keyless entry remote yourself. Most difficult part is to open fob’s case. It's pretty easy with our step by step guide.

Auto repair shop's pricing for replace the battery in remote key fob is from 50 to 600 dollars depending on the car.

Remote key fob batteries in Mercedes-Benz C350 should be replaced every 3-4 years, although this will vary based on frequency of use and build quality. If your remote key fob reduced signal strength, you should replace batteries before it stop open doors and make problems for you.

These symptoms will warn you that it's perhaps time to replace battery in your 2007 Mercedes-Benz C350: you didn't change battery more than 4 years, signal strength reduced, multiple clicks to unlock or lock doors required and low key battery indicator on dashboard.
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Fob Compatibility:

  1. FCC ID: KR55WK49031
  2. Models: 2006-2007 Mercedes-Benz C350