Key Fob
Thread Starter
Member
Joined: Aug 2013
Posts: 156
Likes: 7
2014 GL 350 Bluetec
Key Fob
Anyone had to replace the battery in their key fob in less than a year? I've had mine for 5 months and received the message that it needed to be replaced. Asked the service guy and he said it's typical. I do have the Keyless go, so don't know if that has anything to do with it. Just asked my Sister who has a C300 and has had for 4 years and never replaced. My old Suburban I had for 6 years and never replaced the battery on it either.
MBWorld Fanatic!
Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
Three things -
1) In part Keyless Go does have a larger drain on the fob battery since it is a 24/7/35 signal
2) fob's with Keyless Go have the "same" single battery installation as non-Keyless fob's - so Keyless fob's will go "dead" faster than a non-Keyless fob
3) CORRECTABLE - the current MB batteries are sourced from a battery factory in Indonesia - yes, either Panasonic or Sony brand - you can see the Made in Indonesia marking on the back of the battery - and my personal experience Indonesia batteries are SH*T
Do yourself a BIG favor and order in five Maxell-Japan batteries in from Amazon for $2 - these fresh Maxell-Japan batteries have a 5 year shelf life - on top of being the best battery for your Keyless fob.
Replacing the fob battery takes less than 30 seconds - this 1 1/2 minute youtube video is accurate for X166 and W166 fob's:
1) In part Keyless Go does have a larger drain on the fob battery since it is a 24/7/35 signal
2) fob's with Keyless Go have the "same" single battery installation as non-Keyless fob's - so Keyless fob's will go "dead" faster than a non-Keyless fob
3) CORRECTABLE - the current MB batteries are sourced from a battery factory in Indonesia - yes, either Panasonic or Sony brand - you can see the Made in Indonesia marking on the back of the battery - and my personal experience Indonesia batteries are SH*T
Do yourself a BIG favor and order in five Maxell-Japan batteries in from Amazon for $2 - these fresh Maxell-Japan batteries have a 5 year shelf life - on top of being the best battery for your Keyless fob.
Replacing the fob battery takes less than 30 seconds - this 1 1/2 minute youtube video is accurate for X166 and W166 fob's:
Thread Starter
Member
Joined: Aug 2013
Posts: 156
Likes: 7
2014 GL 350 Bluetec
Three things -
1) In part Keyless Go does have a larger drain on the fob battery since it is a 24/7/35 signal
2) fob's with Keyless Go have the "same" single battery installation as non-Keyless fob's - so Keyless fob's will go "dead" faster than a non-Keyless fob
3) CORRECTABLE - the current MB batteries are sourced from a battery factory in Indonesia - yes, either Panasonic or Sony brand - you can see the Made in Indonesia marking on the back of the battery - and my personal experience Indonesia batteries are SH*T
Do yourself a BIG favor and order in five Maxell-Japan batteries in from Amazon for $2 - these fresh Maxell-Japan batteries have a 5 year shelf life - on top of being the best battery for your Keyless fob.
Maxell Lithium 3V Batteries Size CR2025 (Pack of 5) - Amazon.com
Replacing the fob battery takes less than 30 seconds - this 1 1/2 minute youtube video is accurate for X166 and W166 fob's:
Replacing batteries in your Mercedes Benz key 2010 or newer - YouTube
1) In part Keyless Go does have a larger drain on the fob battery since it is a 24/7/35 signal
2) fob's with Keyless Go have the "same" single battery installation as non-Keyless fob's - so Keyless fob's will go "dead" faster than a non-Keyless fob
3) CORRECTABLE - the current MB batteries are sourced from a battery factory in Indonesia - yes, either Panasonic or Sony brand - you can see the Made in Indonesia marking on the back of the battery - and my personal experience Indonesia batteries are SH*T
Do yourself a BIG favor and order in five Maxell-Japan batteries in from Amazon for $2 - these fresh Maxell-Japan batteries have a 5 year shelf life - on top of being the best battery for your Keyless fob.
Maxell Lithium 3V Batteries Size CR2025 (Pack of 5) - Amazon.com
Replacing the fob battery takes less than 30 seconds - this 1 1/2 minute youtube video is accurate for X166 and W166 fob's:
Replacing batteries in your Mercedes Benz key 2010 or newer - YouTube
Member
Joined: Feb 2008
Posts: 193
Likes: 4
From: Midwest
2013 CLS550 4Matic; 2014 GL350; 2015 GL63; 2016 GTS; 2021 G63
Funny that you posted this today. My CLS key fobs both said change battery yesterday...one year since I got the car. Went to the dealer and they replaced both batteries...albeit with the Mercedes packaged Made in Indonesia Panasonic batteries.
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Joined: Apr 2008
Posts: 1,853
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From: Ottawa, Ontario, Canada
SLS Irridium silver,2014 GL350 BT Irridium, 2015 White Dodge RAM Hemi Quad
I was told that if the key fob is less than three meters from the car, the key fob is activated or is in some state of getting prepared to unlock, lock or start the vehicle. I had the key fob batteries drain pretty quick on everything I have owned from MB like my old C63, my older Gl and the current ones like the 2014 GL and my SLS. I since have found a spot for the keys about four meters from the cars and have found that this works and they last longer.
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MBWorld Fanatic!
Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
Correct on storing/keeping keys more than 10-12 meters from the GL...
Also correct - if low battery comes up in one key, replace battery in BOTH keys.
Unofrtunately, sh*t Panasonic/Indonesia - believe me I have fought upstream on this - battery life with the Maxell Japan will more than double...
Also correct - if low battery comes up in one key, replace battery in BOTH keys.
Unofrtunately, sh*t Panasonic/Indonesia - believe me I have fought upstream on this - battery life with the Maxell Japan will more than double...
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Senior Member
Joined: Jan 2013
Posts: 382
Likes: 20
From: Cincinnati, OH
2021 GLS580 all black. 2014 GLK black (kids car). formerly: 2014 GL550 Palladium Silver (US)
I've had my gl550 since late October, about 6,500 miles. I have to get the key very close to the car to unlock, now car says it can't find the key. Old battery was Panasonic, Indonesia.
I'm trying Duracell duralock off amazon (I'm P&G loyal). Made in Japan.
I'm trying Duracell duralock off amazon (I'm P&G loyal). Made in Japan.
