How to Open Your 2009 Mercedes-Benz SLK280 Key Fob & Change Battery

How to Open Your 2009 Mercedes-Benz SLK280 Key Fob & Change Battery

If your Mercedes-Benz key fob is not working well, the battery most likely needs to be replaced. It's not complicated to replace the battery in your keyless entry remote by yourself. All you need is outlined below.

What size battery does 2009 Mercedes-Benz SLK280 key fob take

Replacing batteries in keyless entry remote require 2xCR2025 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

Simple steps to replace the battery in your SLK280's keyless entry remote

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

Carefully try to open your key fob with flat head screwdriver. Replace 2xCR2025 batteries with flat head screwdriver.

Change old batteries with fresh one CR2025. Battery must be placed with the same position as was a previous. Your remote key fob will not work if you by mistake place battery wrong way.

Before assembling keyless entry fob's case, make sure that everything is functioning by testing buttons on circuit board.

The last thing to do is put your cover back on fob. Delicately try to assemble the two halves together by hands from top to bottom. Inspect your keyless entry remote shell for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video instruction

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

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz SLK280 require 2xCR2025 batteries. Most CR2025 batteries are under $5 build upon the type, brand and size packaging you buy. Take your 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 keyless entry remote not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Replacing your key fob battery is easy to do in 2009 Mercedes-Benz SLK280. Most of car manufacturers think about customers and make a special hole for remote key fob open.

The price to replace the battery inside fob is in range $50-600 depending on the make and the service station.

Key fob batteries in Mercedes-Benz SLK280 should be changed every four years, but this will differ based on frequency of use and quality. If your remote key fob decreased signal strength, you should change 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 2009 Mercedes-Benz SLK280: low key battery indicator on dashboard, key fob buttons not working, multiple clicks to unlock or lock doors required and signal strength reduced.
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Fob Compatibility:

  1. FCC ID: KR55WK49031
  2. Models: 2006-2009 Mercedes-Benz SLK280