How to Open Your 2008 BMW 5-Series Key Fob & Change Battery

How to Open Your 2008 BMW 5-Series Key Fob & Change Battery

If your 5-Series key fob isn't unlock doors perfectly, the battery most likely must to be replaced. In this case, you’ll benefit from knowing how to disassembly BMW keyless entry remote and replace a dead or weak battery DIY. If you decide to do it at home near 5-Series, follow our instruction, but don't forget to check all you need.

What size battery does 2008 BMW 5-Series remote key fob take

Before going to disassembly remote key fob check all that you need: flat head screwdriver, glue for plastics, one CR2032 battery and boxcutter.
  • flat head screwdriver
  • 1xCR2032 battery
  • glue
  • razor knife

Step by step guide

Inside of your remote key fob installed tiny coin battery. Move the key out of the way if it is in the key fob. To open this remote key fob you need scoring the edges with boxcutter first.

Delicately try to pry apart your keyless entry remote with hands or flat head screwdriver. Remove CR2032 battery with flat head screwdriver.

Change old battery with new one CR2032. 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 battery installed, verify remote key fob by pressing buttons. If everything working properly, assemble your keyless entry fob's case in reverse order.

At this point squeeze keyless entry fob's back cover together. Line your case two halves together and assemble it together by hands from top to bottom. If your keyless entry remote shell tightly closed, we done. If not, repeat the last step. Glue the back of the remote key fob.

Key Fob Battery Replacement 2008 BMW 5-Series Video

2007 - 2010 BMW 5 Series Key Battery Replacement E60 Non-Comfort Access Fob Remote

Still not working? Buy new one


Remote key fob of BMW 5-Series require 1xCR2032 batteries. Price for CR2032 batteries are under $4-6 build upon the type, brand and size packaging you buy. You can take old battery to the store, with you to find a proper replacement.

Usually, after remote key fob battery replace, reprogramming not required. Remote key fob reprogramming procedure often described in user's manual of your vehicle.

Replacing your remote key fob battery is simple to do in 2008 BMW 5-Series. Most of car manufacturers think about customers and make a special hole for key fob open.

Auto repair shop's price for replace the battery in fob is from 50 to 600 dollars depending on the brand.

You should replace batteries inside remote key fob of modern cars at least once in four years. lifespan of battery differ on usage time, quality and operating conditions. Lithium cells normally will last longer.

These signs will alert you that it's possible time to replace battery in your 2008 BMW 5-Series: you didn't change battery more than 4 years, multiple clicks to unlock or lock doors required, key fob buttons not working and signal strength reduced.
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Fob Compatibility:

  1. FCC ID: KR55WK49147
  2. Models: 2004-2010 BMW 5-Series