How to Open Your 2007 Mercedes-Benz CLK350 Key Fob and Change Battery

How to Open Your 2007 Mercedes-Benz CLK350 Key Fob and Change Battery

Keyless entry remote grant access to your Mercedes-Benz. Once the keyless entry remote battery is discharged you will lose your keyless entry fob's ability to use remote opportunities. Below, we walks you through how to disassembly your key fob and replace your Mercedes-Benz key battery.

What kind of battery remote key fob use

Before you start to disassembly remote key fob check all that you need: 2xCR2025 batteries and flat head screwdriver.
  • flat head screwdriver
  • 2xCR2025 batteries

Step by step instruction

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

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

Change old batteries with fresh one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.

When the new batteries installed, check key fob functionality by pressing buttons. If all functions works, assemble your fob’s case in reverse order.

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

How to change the battery video guide

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

Still not working? Buy new one


Key fob of Mercedes-Benz CLK350 use 2xCR2025 batteries. Most CR2025 batteries are under $4-6 depending on the brand, size packaging and type you buy. Take your old battery to the store, with you to find a proper replacement.

Often, after key battery change, you do not need to reprogram. Key fob reprogramming procedure often described in user's manual of your vehicle.

Replacing your remote key fob battery is simple to do in 2007 Mercedes-Benz CLK350. Most of car manufacturers think of the clients and make a special hole for remote key fob disassembly.

The price to change the battery inside keyless entry remote is in range $50-600 depending on the make and the service station.

Key fob batteries in Mercedes-Benz CLK350 should be changed once in three or four years, but this will differ based on their amount of use and battery quality. If your key fob shortened signal strength, you should change batteries before it stop working and make problems for you.

If your CLK350 key fob buttons not working, fob's battery more than 4 years old, need multiple clicks to unlock or lock doors or signal strength reduced, it's probably battery replace in remote key fob needed. Installed battery is discharged with a high probability, but if it's not fix problem, key change or repair required.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: KR55WK49031
  2. Models: 2006-2009 Mercedes-Benz CLK350