How to Replace the Battery in a 2003 Mercedes-Benz SL55 AMG Key Fob
If your SL55 AMG keyless entry remote isn't working well, the cell battery more likely needs to be changed. It's not difficult to change the battery in your remote key fob with our guide. All tools, that you need is outlined in this article.
What kind of battery keyless entry remote require
Before starting open key fob check all that you need: 2 CR2025 batteries and flat head screwdriver.- flat head screwdriver
- 2xCR2025 batteries
Step by step guide
A small coin battery installed in the your key fob. Move the key out of the way if it is in the keyless entry remote.
Carefully try to open your key fob with pry tools. Remove 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 position on battery, by "+" mark.
After the new batteries installed, check key fob by pressing buttons. If all functions works, assemble your keyless entry fob's body in reverse order.
At this point squeeze keyless entry fob's back cover together. Line your shell pieces together and assemble it in place by hands from top to bottom. Inspect your key fob body for gaps. If it is not tightly closed try to repeat last step.
How to replace the battery video guide
SOLVED - Mercedes Benz Keyfob Battery Replacement | Smart Key Fob Dead Batteries
Still not working? Buy new one