1999 Mercedes-Benz S320 Key Fob Battery Replacement Instructions

1999 Mercedes-Benz S320 Key Fob Battery Replacement Instructions

If your S320 key isn't open doors perfectly, the cell battery likely must to be changed. In this post, we described how to disassembly your car remote key fob and replace your Mercedes-Benz key battery.

What type battery key fob use

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

Step by step instruction

A tiny button cell battery installed in the your remote key fob. Remove any internal key before you try to pry apart the remote key fob.

Carefully try to pry apart your keyless entry remote with hands or flat head screwdriver. Remove 2xCR2025 batteries with flat head screwdriver.

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

Before assembling keyless entry fob's case, verify that all working fine by testing buttons on circuit board.

The last thing to do is put your cover back on fob. Carefully try to put the two halves in place by hands from top to bottom. Inspect your remote key fob case for gaps. If it is not tightly closed try to repeat last step.

Key Fob Battery Replacement 1999 Mercedes-Benz S320 Video

How To Replace A 1995 - 1999 Mercedes Benz Flip Open Switch Blade Style Key Fob Battery FCC ID KR 55

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz S320 require 2xCR2025 batteries. Price for CR2025 batteries are under $4 build upon the type, brand and size packaging you buy. You can take old battery to the store, to be sure.

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

Changing your keyless entry remote battery is simple to do in 1999 Mercedes-Benz S320. Most of car manufacturers think of the customers and make a special hole for key fob disassembly.

Dealer service price for change the battery in fob is from $30 to as high as $500 depending on the make.

Key fob batteries in Mercedes-Benz S320 should be replaced once in three years, although this will vary based on their amount of use and quality. If your keyless entry remote 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 perhaps time to replace battery in your 1999 Mercedes-Benz S320: you didn't change battery more than 4 years, key fob buttons not working, multiple clicks to unlock or lock doors required and low key battery indicator on dashboard.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: KR 55
  2. Models: 1995-1999 Mercedes-Benz S320