Key fob battery
Thread Starter
Member
Joined: May 2007
Posts: 85
Likes: 46
From: Georgia
2022 EQS 450+ Pinnacle
Key fob battery
Anybody else have trouble with a short-lived key fob battery? I have just gotten notification to replace the battery for the second time in five months. Maybe my key sits too close to the vehicle?
MBWorld Fanatic!
Joined: Jan 2016
Posts: 2,336
Likes: 936
From: Brookshire, Texas & Cat Spring, Texas
2019 SL550/2023 EQS 580 SUV
Out of all the vehicles I have owned over the years MB’s have used up batteries quicker than other brands for some unknown reason. When you replace be sure to buy from a store that sells a lot and you know the batteries don’t sit around too long. I have read horror stories about some Amazon vendors selling very old batteries at really low prices.
Super Member
Joined: Jan 2022
Posts: 981
Likes: 555
I've owned my 450 for17 months, have only recently had to replace the battery in the FOB. Replaced with a Duracell from Batterys Plus. Most MB dealers replace the FOB battery with each service visit in my experience.
Out Of Control!!
Joined: Nov 2018
Posts: 11,432
Likes: 5,343
From: San Francisco Bay Area
2019 C63CS
The battery required is a CR 2032, not 2025. Old batteries that have been sitting on the shelves is not unusual and the most common reason for short battery life. You should actually see increased battery life with the newer fobs, because they have a motion sensor in them and after 2 minutes of not sensing any motion they automatically go to sleep and stop communicating. The primary reason for this is to combat the relay attacks, so nobody can steal your car from your driveway while you are at home, but the nice side effect is that it preserve the battery as well. FWIW, I just recently had to replace the battery in my key fob for the first time after 4 years. It sits at home in sleep mode most of the time as I don't really drive on weekdays.
Last edited by superswiss; May 23, 2023 at 05:26 PM.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Super Member
Joined: Nov 2021
Posts: 825
Likes: 263
From: NE KY, on the Ohio River
2018 S560; 2022 EQS450+
For several years I bought cheaper fob batteries at Radio Shack. Then I realized they were selling old batteries, and now get them at Kroger or Walgreen. Last much longer..
Junior Member
Joined: May 2023
Posts: 27
Likes: 18
From: Texas
G55 AMG
they're 2032. Just grab a pack on amazon cheap so you have them ready to replace. Personally I would replace them every 4 months in each remote for peace of mind and never have to worry about it.
https://amzn.to/3BXCPyA
https://amzn.to/3BXCPyA
MBWorld God!
Joined: Dec 2019
Posts: 32,390
Likes: 6,330
they're 2032. Just grab a pack on amazon cheap so you have them ready to replace. Personally I would replace them every 4 months in each remote for peace of mind and never have to worry about it.
https://amzn.to/3BXCPyA
https://amzn.to/3BXCPyA
Junior Member
Joined: May 2023
Posts: 27
Likes: 18
From: Texas
G55 AMG
MBWorld God!
Joined: Dec 2019
Posts: 32,390
Likes: 6,330
Yup, FBA is generally better than just market/third party seller but just worried about Amazon putting fake stock inside the FBA sold by Amazon stock as well. If the market/third party seller is reputable like for example a storefront, or in the case Energizer Official (something like that), it might actually be better than buying from Fulfilled by Amazon sellers or Fulfilled by Amazon sold by Amazon themselves.
Junior Member
Joined: May 2023
Posts: 27
Likes: 18
From: Texas
G55 AMG
Yup, FBA is generally better than just market/third party seller but just worried about Amazon putting fake stock inside the FBA sold by Amazon stock as well. If the market/third party seller is reputable like for example a storefront, or in the case Energizer Official (something like that), it might actually be better than buying from Fulfilled by Amazon sellers or Fulfilled by Amazon sold by Amazon themselves.
So this one would be a safe bet then? Since the actual seller is also Amazon?
https://amzn.to/43v6aMR
MBWorld God!
Joined: Dec 2019
Posts: 32,390
Likes: 6,330
oh, i see what you mean.
So this one would be a safe bet then? Since the actual seller is also Amazon?
https://amzn.to/43v6aMR
So this one would be a safe bet then? Since the actual seller is also Amazon?
https://amzn.to/43v6aMR
MBWorld Fanatic!
Joined: Jan 2016
Posts: 2,336
Likes: 936
From: Brookshire, Texas & Cat Spring, Texas
2019 SL550/2023 EQS 580 SUV
Just go to your local grocery store or Walmart where they sell a lot of batteries and you know they will be fresh. Saving 25 cents on a iffy battery from Amazon for a 100k automobile makes no sense….
MBWorld God!
Joined: Dec 2019
Posts: 32,390
Likes: 6,330
I guess this as well, maybe Amazon is about the convenient assuming those who work at home and order groceries online now, dang things really changed us these couple of years. I got so lazy now.
Super Member
Joined: Jan 2022
Posts: 981
Likes: 555
, ymmv.
Super Member
Joined: Jan 2022
Posts: 981
Likes: 555
