Key fob battery
#1
Member
Thread Starter
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?
#2
MBWorld Fanatic!
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.
The following users liked this post:
pmichaelmd (05-22-2023)
#3
Super Member
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.
The following 2 users liked this post by hlothery:
pmichaelmd (05-23-2023),
ScottC2 (05-22-2023)
#7
MBWorld Fanatic!
Join Date: Nov 2018
Location: San Francisco Bay Area
Posts: 8,598
Received 3,938 Likes
on
2,629 Posts
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; 05-23-2023 at 05:26 PM.
Trending Topics
#9
Super Member
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..
#10
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
#11
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
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
The following users liked this post:
NKPGarage (05-25-2023)
#12
#13
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
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.
#14
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
#15
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
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
#16
MBWorld Fanatic!
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….
The following users liked this post:
hlothery (05-25-2023)
#17
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
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.
#20
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
#23
MBWorld Fanatic!
Join Date: Nov 2018
Location: San Francisco Bay Area
Posts: 8,598
Received 3,938 Likes
on
2,629 Posts
2019 C63CS
#24
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,921
Received 2,654 Likes
on
2,257 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)