How to Open Your 1996 Mercedes-Benz S420 Key Fob & Change Battery
Remote key fob grant easy access to your Mercedes-Benz. Once the key battery is weak you will not to be able close car remotely. It's not complicated to change the battery in your remote key fob by yourself. Everything you need is described in this post.
What is the battery key fob requireChanging batteries in keyless entry remote require flat head screwdriver and CR2025 batteries. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
- flat head screwdriver
- 2xCR2025 batteries
Simple steps to replace the battery in your S420's remote key fob
Inside of your keyless entry remote installed tiny coin battery. Open the key if it is in the remote key fob.
Accurately try to open your remote key fob with flat head screwdriver. Remove 2xCR2025 batteries with flat head screwdriver.
Replace old batteries with fresh one CR2025. Battery must be installed with the same position as was a previous. Your key fob will not work if you mistakenly put battery wrong way.
When the new batteries installed, verify remote key fob functionality by pressing buttons. If all functions works, assemble your keyless entry fob's case in reverse order.
The last thing to do is put your cover back on fob. Gently try to assemble the pieces in place by hands from top to bottom. If your keyless entry remote case tightly closed, we done. If not, repeat the last step.
Key Fob Battery Replacement 1996 Mercedes-Benz S420 Video
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Still not working? Buy new one