"Change Key Battery" Message
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From: Lynnwood, WA
2007 MB E550 Sport
"Change Key Battery" Message
So I've had my E550 since May, '07 with Keyless Go. For the past couple of days, I've gotten the message "Change Key Battery" on the information screen, intermittently.
Is it unusual to have the battery go out so soon? I used my other keyfob, and all is well with that one.
Is it unusual to have the battery go out so soon? I used my other keyfob, and all is well with that one.
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From: Long Island, NY
2004 E320
Not unusual because it depends on the freshness of the battereies when they were initially installed.
Additionally, when I got that msg I pulled the batteries and measured the voltage. They were both 2.9 volts. (labeled 3v) so that warning comes on far to early IMO. You may also have gotten 1 battery that drained early, so check before replacing.
Additionally, when I got that msg I pulled the batteries and measured the voltage. They were both 2.9 volts. (labeled 3v) so that warning comes on far to early IMO. You may also have gotten 1 battery that drained early, so check before replacing.
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From: Lynnwood, WA
2007 MB E550 Sport
Not unusual because it depends on the freshness of the battereies when they were initially installed.
Additionally, when I got that msg I pulled the batteries and measured the voltage. They were both 2.9 volts. (labeled 3v) so that warning comes on far to early IMO. You may also have gotten 1 battery that drained early, so check before replacing.
Additionally, when I got that msg I pulled the batteries and measured the voltage. They were both 2.9 volts. (labeled 3v) so that warning comes on far to early IMO. You may also have gotten 1 battery that drained early, so check before replacing.
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E550 4MATIC
I didn't know that the car would tell you when to change the battery. Is it a good idea to change the batteries on a regular basis--say 1 to 2 years? Or should you just leave them until they die?
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From: Ft. Lauderdale Area, USA
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You can get the batteries at Radio Shack... they're cheap enough. I have Keyless Go & use the window dropping feature alot in the summer. I change the batteries every 8 months or so, just because.
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Thanks for the cost-savings tip, Barry! It's amazing what the markup at the dealership is...
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From: Long Island, NY
2004 E320
As dealer parts pricing varies, let your fingers do the walking and call YOUR dealer's parts dept.
I bought mine at Waldbaums (local supermarket) @ $4.29 for a Duracell 2 pack.
The universal, all brands, # for them is CR2025
I bought mine at Waldbaums (local supermarket) @ $4.29 for a Duracell 2 pack.
The universal, all brands, # for them is CR2025
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From: New Jersey
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Jeeze, no need for everyone to be so touchy. I don't need them yet I was just curious since everyone said they were so much more at the dealer.
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Edit:We're not touchy, just trying to be helpful.
Last edited by starbrite; Aug 27, 2007 at 01:25 PM.
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From: DVStyle
2006 Mercedes Benz E350
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Just make sure that you don't wait until the last minute to change them because I did that one time and I ended up not being able to lock my doors when I was out one night.
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'06 Porsche 997 Black Sport Exhaust, '06 Mercedes E350 4MATIC Iridium Silver Apper+Prem Package
So I've had my E550 since May, '07 with Keyless Go. For the past couple of days, I've gotten the message "Change Key Battery" on the information screen, intermittently.
Is it unusual to have the battery go out so soon? I used my other keyfob, and all is well with that one.
Is it unusual to have the battery go out so soon? I used my other keyfob, and all is well with that one.
MBWorld Fanatic!
Joined: Jul 2006
Posts: 1,779
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From: Long Island, NY
2004 E320
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From: Blaine, WA
07 E320 Bluetec
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From: DVStyle
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From: NJ, USA
2004 E500 4matic
those batteries are used on computer motherboard to same Bios data, such as time and date. If you computer clock time keeps going back going back in time your battery is jacked up.
