How to Open Your 1997 Mercedes-Benz S500 Key Fob & Change Battery

How to Open Your 1997 Mercedes-Benz S500 Key Fob & Change Battery

If your car keyless entry remote is no longer open doors correct, the cell battery likely must to be replaced. In this case, we demonstrate how to open your car key fob and replace a weak or dead battery DIY. If you choose to do it at home near S500, follow our instruction, but don't forget to check tools and materials required.

What is the battery keyless entry remote use

Changing batteries in remote key fob require 2 CR2025 batteries and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
  • flat head screwdriver
  • 2xCR2025 batteries

Simple steps to replace the battery in your S500's key fob

Inside of your keyless entry remote installed small button battery. Open the key if it is in the remote key fob.

Delicately try to open your key with pry tools. Remove 2 CR2025 batteries with flat head screwdriver.

Get new batteries and install it in keyless entry fob's case. Battery must be installed with the same polarity as was an old. Your remote key fob will not work if you mistakenly place battery wrong way.

After the new batteries installed, check key fob functionality by pressing buttons. If everything working good, assemble your fob’s case in reverse order.

At this point squeeze fob’s back cover together. Line your case two halves together and assemble it together by hands from top to bottom. Check your fob case for gaps. If it is not tightly closed try to repeat last step.

Video of remote key fob opening

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

Still not working? Buy new one

FAQ

Key fob of Mercedes-Benz S500 require 2xCR2025 batteries. Price for CR2025 batteries are under $4 depending on the brand, type and size packaging you buy. Take your old battery to the store, to find a proper replacement.

Usually, after key battery change, you do not need to reprogram. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can replace battery in your 1997 Mercedes-Benz S500 remote key fob yourself. Most difficult part is to disassembly fob’s case. It's pretty easy with our guide.

Auto repair shop's price for change the battery in remote key fob is from $30 to as high as $500 depending on the make.

You should change batteries inside key fob of modern cars at least once in 4 years. The term of battery differ on their amount of use, quality and operating conditions.

These symptoms will warning you that it's probably time to change battery in your Mercedes-Benz S500: signal strength reduced, low key battery indicator on dashboard, multiple clicks to unlock or lock doors required and key fob buttons not working.
Be the first to comment.
Your message is required.

Fob Compatibility:

  1. FCC ID: KR 55
  2. Models: 1995-2005 Mercedes-Benz S500