How to Replace the Battery in a 2000 Mercedes-Benz SL500 Key Fob

How to Replace the Battery in a 2000 Mercedes-Benz SL500 Key Fob

Remote key fob grant easy access to your Mercedes-Benz. When the remote key fob battery is weak you’ll not to be able open car remotely. It's not difficult to replace the battery in your key fob with our guide. Everything you need is described in this article.

What size battery does 2000 Mercedes-Benz SL500 remote key fob take

Before starting disassembly keyless entry remote make sure that you have all required tools and materials: flat head screwdriver and CR2025 batteries.
  • 2xCR2025 batteries
  • flat head screwdriver

Simple steps to replace the battery in your SL500's keyless entry remote

Inside of your key fob installed button battery. Remove any internal key first, and then try to pry apart the remote key fob.

Accurately try to disassemble your fob with hands or flat head screwdriver. Change two CR2025 batteries with flat head screwdriver.

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

When the new batteries installed, check key fob by pressing buttons. If everything working good, assemble your fob’s body in reverse order.

At this point squeeze keyless entry fob's back cover together. Line your body two halves together and assemble it together by hands from top to bottom. Inspect your fob shell for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video guide

HOW TO Mercedes Benz KeyFob Battery Replacement. Smart key keyless BRC c230 sl500 e320 ml320 DIY Fix

Still not working? Buy new one

Frequently Asked Questions

Keyless entry remote of Mercedes-Benz SL500 use 2xCR2025 batteries. Most CR2025 batteries are under $4-6 depending on the size packaging, type and brand 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 key not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Yes, you can change battery in your 2000 Mercedes-Benz SL500 key yourself. Most difficult part is to disassembly fob’s case. It's pretty simple with our instruction.

Auto repair shop's price for replace the battery in key fob is from 50 to 600 dollars depending on the make.

Key fob batteries in Mercedes-Benz SL500 should be changed every 4 years, but this will differ based on frequency of use and battery quality. If your remote key fob reduced signal strength, you should replace batteries before it stop close doors and make problems for you.

These symptoms will warning you that it's probably time to replace battery in your Mercedes-Benz SL500: key fob buttons not working, you didn't change battery more than 4 years, signal strength reduced and low key battery indicator on dashboard.
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Other Mercedes-Benz Models:

Fob Compatibility:

  1. FCC ID: IYZ 3312
  2. Models: 2000-2006 Mercedes-Benz S500