replace key battery (I did and warning light still on)
Thread Starter
Junior Member
Joined: Feb 2006
Posts: 57
Likes: 0
2014 ML 350 bluetec
replace key battery (I did and warning light still on)
Hey everyone.
I just installed a brand new Energizer CR2025 and my "replace key battery" still stays on on my dash. what is going on?
also would the fact that I keep my key always in my ML since I leave it parked inside my garage, would that cause the battery to drain because it is always being detected?
thanks for any input
I just installed a brand new Energizer CR2025 and my "replace key battery" still stays on on my dash. what is going on?
also would the fact that I keep my key always in my ML since I leave it parked inside my garage, would that cause the battery to drain because it is always being detected?
thanks for any input
MBWorld Fanatic!
Joined: Mar 2004
Posts: 1,175
Likes: 24
From: Boston, MA
'14 ML350, '13 C220 CDI, '07 C280, '98 ML320
Do you have a second key? Does that error message come with the other key as well OR just with this key?
If I were you, I wouldn't leave the key in the ignition overnight everyday like that... even if the car is secured in the house/garage.
If I were you, I wouldn't leave the key in the ignition overnight everyday like that... even if the car is secured in the house/garage.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 3,056
Likes: 47
From: Orlando, Florida
E350 Sport/ML350RWD
When I had problems with my Keyless GO on my W212- I replaced all my batteries with brand new Energizers. The first thing the dealership did was replace the Brand New batteries with Panasonic. They said they sometimes have issues with other brand batteries. I don't understand since Energizer or Duracell should be premium brand batteries.
MBWorld Fanatic!
Joined: Jun 2006
Posts: 2,359
Likes: 2
From: California
06 C55, 09 E350
When I had problems with my Keyless GO on my W212- I replaced all my batteries with brand new Energizers. The first thing the dealership did was replace the Brand New batteries with Panasonic. They said they sometimes have issues with other brand batteries. I don't understand since Energizer or Duracell should be premium brand batteries.
I would do as suggested as well. Panasonic batteries went on back order so we purchased interstate batteries and we had 50 sets of them not work right out of the package. It goes with anything really in the industry MB requests a certain quality to be maintained from what they are purchasing from their vendors which they might not do on their own. Same with companies like apple who outsource their components. Also if it doesn't work you can have service check it out as well since your car is still new I am guessing it maybe be under warranty.
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
MBWorld Fanatic!
Joined: Dec 2007
Posts: 3,056
Likes: 47
From: Orlando, Florida
E350 Sport/ML350RWD
The Energizers I bought were brand new with an expiration date of 2022. I even had the packages and the receipts.
All batteries are not created equal. Do some research online and brands you would consider "premium" brands are not always the best performers.
All batteries are not created equal. Do some research online and brands you would consider "premium" brands are not always the best performers.
MBWorld Fanatic!
Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
Panasonic - even when genuine like MB branded package - are made in Malaysia for the past 6yrs - suck.
Hard to understand - but button cell batteries are one of the largest volum knockoff business - w/China and Indonesia junk being sold as branded battery.
For CR2025 the ONLY Japanese made battery left is Maxell CR2025 - in HOLOGRAM package ONLY !
See 5-pack (less than $.60 ea) and 20-pc pack ($.35 ea) on Amazon below as examples:
Hard to understand - but button cell batteries are one of the largest volum knockoff business - w/China and Indonesia junk being sold as branded battery.
For CR2025 the ONLY Japanese made battery left is Maxell CR2025 - in HOLOGRAM package ONLY !
See 5-pack (less than $.60 ea) and 20-pc pack ($.35 ea) on Amazon below as examples:
MBWorld Fanatic!
Joined: Oct 2015
Posts: 1,583
Likes: 292
2019 E300
I am using a Duracell battery in my key fob as we speak. I agree, the performance can vary, but when new, as long as they output 3 volt, its fun.
