How to Replace the Battery in a 2007 Mercedes-Benz E550 Key Fob

How to Replace the Battery in a 2007 Mercedes-Benz E550 Key Fob

Remote key fob grant easy access to your car. When the remote key fob battery is dead you will lose your fob’s ability to use distance opportunities. In this post, we walks you through how to open your remote key fob and replace your Mercedes-Benz key battery step by step.

What kind of battery keyless entry remote require

Before going to disassembly remote key fob be sure that you have all recommended tools and materials: 2xCR2025 batteries and flat head screwdriver.
  • flat head screwdriver
  • 2xCR2025 batteries

Step by step instruction

A tiny button cell battery installed in the your key fob. Move the key out of the way if it is in the keyless entry remote.

Accurately try to disassemble your keyless entry remote with hands or flat head screwdriver. Replace 2 CR2025 batteries with flat head screwdriver.

Get new batteries and install it in keyless entry fob's body. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

When the new batteries installed, check key fob by pressing buttons. If all functions works, assemble your keyless entry fob's shell in reverse order.

The last thing to do is put your cover back on fob. Gently try to put the pieces together by hands from top to bottom. If your remote key fob shell firmly closed, we done. If not, repeat the last step.

Key Fob Battery Replacement 2007 Mercedes-Benz E550 Video

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

Still not working? Buy new one


Remote key fob of Mercedes-Benz E550 use 2xCR2025 batteries. Price for CR2025 batteries are under $6 depending on the type, size packaging and brand you buy. You can take old battery to the store, with you to find a proper replacement.

Key fob in most of cases do not require to be reprogrammed after battery change. If your remote key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can change battery in your 2007 Mercedes-Benz E550 key yourself. Most difficult part is to open fob’s case. It's pretty easy with our instruction.

Dealer service pricing for change the battery in key is $50-600 depending on the car.

Remote key fob batteries in modern cars should be changed once in 3-4 years, but this will vary based on their amount of use and build quality. If your remote key fob decreased signal strength, you should change batteries before it stop close doors and make trouble for you.

If your auto fob's battery more than 4 years old, signal strength reduced, need multiple clicks to unlock or lock doors or key fob buttons not working, in most cases battery replace inside key fob required. Currently installed battery is weak with a high probability, but if it's not help, fob replace or repair required.
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Fob Compatibility:

  1. FCC ID: IYZ3317
  2. Models: 2007-2012 Mercedes-Benz E550