How to Replace the Battery in a 2012 Mercedes-Benz GL550 Key Fob
If your Mercedes-Benz key fob isn't working properly, the cell battery surely must to be changed. In this post, we outlined how to open your car key fob and change your Mercedes-Benz key battery step by step.
What type battery does 2012 Mercedes-Benz GL550 remote key fob requiredChanging batteries in key fob 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.
- 2xCR2025 batteries
- flat head screwdriver
Step by step guide
Inside of your remote key fob installed coin cell battery. Move the key out of the way if it is in the keyless entry remote.
Accurately try to open your remote key fob with hands or flat head screwdriver. Replace two CR2025 batteries with flat head screwdriver.
Now it's time to install new batteries inside fob’s shell. Battery must be placed with the same polarity as was an old. Your remote key fob will not work if you by mistake place battery wrong way.
After the new batteries installed, check key fob functionality by pressing buttons. If all functions works, assemble your keyless entry fob's shell in reverse order.
The last thing to do is put your cover back on fob. Accurately try to assemble the two halves in place by hands from top to bottom. Check your keyless entry remote shell for gaps. If it is not firmly closed try to repeat last step.
How to replace the battery video guide
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