M-Class (W166) Produced 2012-2015

Fob battery

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Old 08-03-2017, 06:25 PM
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GLE 350 4matic-Porsche Cayman
Fob battery

OK. I have purchased my last 2 batteries at Batteries + and they are only lasting 2 months! That is unacceptable . I think it is CR 2025. Where are you all getting your batteries. [my first battery lasted YEARS]
Old 08-03-2017, 11:08 PM
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Not sure if it helps...but leaving FOB in the car drains them appearantly..
Old 08-04-2017, 02:12 PM
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Originally Posted by easyedwin
OK. I have purchased my last 2 batteries at Batteries + and they are only lasting 2 months! That is unacceptable . I think it is CR 2025. Where are you all getting your batteries. [my first battery lasted YEARS]
Its funny, just replaced mine yesterday:
Used Panasonic Cr2025 battery bought at Amazon.
Panasonic CR2025-4 CR2025 3V Lithium Coin Battery (Pack of 4)
Amazon Amazon

Lasted from Feb 10 2016 till yesterday when message pop-up.

Also, i did see another discussion on this forum of using cr2032 instead. There are enough room to fit.
Im planning to use cr2032 next time.
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Old 08-04-2017, 02:18 PM
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I also replaced mine 2-3 days ago, and lasted about 1yr and 2 months. I believe I pick it up from local walmart (Energizer CR2025).
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Old 08-06-2017, 06:54 PM
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Originally Posted by DanD.
Its funny, just replaced mine yesterday:
Used Panasonic Cr2025 battery bought at Amazon.
Panasonic CR2025-4 CR2025 3V Lithium Coin Battery (Pack of 4) https://www.amazon.com/dp/B001GZB6BU..._.FlHzb5VDJDXK

Lasted from Feb 10 2016 till yesterday when message pop-up.

Also, i did see another discussion on this forum of using cr2032 instead. There are enough room to fit.
Im planning to use cr2032 next time.
I did that and it fits. Barely, but it fits...
Old 08-17-2017, 08:01 AM
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Originally Posted by peter2772000
I did that and it fits. Barely, but it fits...
I visited the dealer yesterday and was told to stop buying Chinese batteries. They installed a Japanese battery [Panasonic] for $3.95.
Old 08-17-2017, 08:19 AM
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Great point! I've bought generic AND brand-name batteries from discount electronic shops and have been disappointed every time. But the oversized (and brand-name) battery mentioned before definitely fits and should last quite a bit longer.
Old 08-17-2017, 10:54 AM
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Originally Posted by easyedwin
I visited the dealer yesterday and was told to stop buying Chinese batteries. They installed a Japanese battery [Panasonic] for $3.95.
Battery I bought form Amazon also Panasonic, but maid in Indonesia. Are you sure yours made in Japan?
Old 08-18-2017, 07:38 PM
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Well, that is what the dealer told me.

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