Key Fob battery
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Junior Member
Joined: Apr 2017
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2018 E400
Key Fob battery
My key fob battery run low about 2 months ago which would have been 6 month after taking delivery. I thought this was strange given my Acura's battery is over 2 years old. Now just 2 months later I am getting the same change battery warning. Is this normal? What has your experience been. Is something wrong with my key fob? Did I get a bad battery? Any advice would be helpful.
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Junior Member
Joined: Apr 2017
Posts: 23
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2018 E400
I have not spoken with the dealer. I changed the battery today and will see how long this one lasts and I will check when I go in for service in the fall. If this doesn't last long I will reach out to them. I have put in the same 2032 battery but its Duracell vs Panasonic but that should not matter,
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
I have not spoken with the dealer. I changed the battery today and will see how long this one lasts and I will check when I go in for service in the fall. If this doesn't last long I will reach out to them. I have put in the same 2032 battery but its Duracell vs Panasonic but that should not matter,
I don't know if that can make any difference. But I would check your owner's manual to be sure you are using the correct battery specifed.
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
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MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
So, it appears the new shape Smart Key cannot be used as an emergency key in the ignition after removing the Keyless Go button. Maybe the button is not removable, either?
Last edited by DFWdude; Jul 15, 2018 at 07:35 PM.
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To my understanding, the start/stop button cannot be removed. Im sure thats what you are also implying.
Im getting my car this week but as i understand it you can charge the key in the center console?
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Read the manual! Just place the key in the spot for it in the forward console. Voilà, emergency key.
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Joined: May 2003
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From: Long Island, New York
2018 E400 4matic Wagon
In her S211 E350 wagon, my wife could place the key into the ignition slot. Not so with her S213 wagon as the stop/start button is where the key would normally go. So, for an emergency start, like ua549 says, you need to place the "key" in the center console in the space to the right.
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
In her S211 E350 wagon, my wife could place the key into the ignition slot. Not so with her S213 wagon as the stop/start button is where the key would normally go. So, for an emergency start, like ua549 says, you need to place the "key" in the center console in the space to the right.
