Change key battery - how soon?
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MBWorld Fanatic!
Joined: Jul 2002
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From: California
i535
Change key battery - how soon?
The message appeared today in cluster. Very surprising, my car is less than 2 years old. I need the car just for two more months, so how safe is driving with this kind of warning?
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Joined: Apr 2010
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From: Orange County, CA
K7 GSX-R 750
I've been driving for a couple months with that same warning...though I have the P2 w/Push Start but nothing as of yet. In terms of my Key not working or something of that sort. GL!!
BTW, why only for 2Months???
BTW, why only for 2Months???
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Joined: Mar 2004
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From: Ft. Lauderdale Area, USA
2015 ML 350
Radio Shack carries a set of two for a few dollars. Its Summer... you'll lose your summer window opening soon & you'll have to be real close to the car for it to unlock due to dead key batteries. 2 Months is a long time.
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From: Orange County, CA
K7 GSX-R 750
MBWorld Fanatic!
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From: Los Angeles
2009 SL550 Roadster Diamond White, 2008 CLK550 Coupe Obsidian Black
he asked if i want to buy them, i laughed and told him i have about 300 of these in our warehouse. ya, i don't think so 
MBWorld Fanatic!
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From: Ft. Lauderdale Area, USA
2015 ML 350
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MBWorld Fanatic!
Joined: Aug 2005
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From: Los Angeles
2009 SL550 Roadster Diamond White, 2008 CLK550 Coupe Obsidian Black
the reason is because a signal is constantly being transmitted from the transponder chip in the remote since it is constantly looking for the car. the nice thing would be for someone that doesn't want to use it if you can turn it off within the remote.
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Joined: Nov 2009
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From: austin, texas, usa
2006 e320 cdi
I didn't even know that you can change the battery. The whole key look like completely sealed. What do you do? Pry open the casing? Never mind, I figured out. sorry!
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From: Ft. Lauderdale Area, USA
2015 ML 350
If you don't have the manual, its best to find someone at the dealership to show you how to avoid damage to the key ($$$). Bring YOUR new batteries with you.
Its really as simple as changing the wiper blades on the car.
Last edited by Barry45RPM; May 23, 2010 at 12:05 AM.
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Joined: Jun 2009
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2016 C 300 4matic Lunar blue
Remove the metal "valet" lock out key. Use the metal head of that key to slide the gray plastic slide lock in the top enside edge of the smartkey downward. Slide out the inner guts of the smartkey like a dresser drawer. Batteries are stacked inside. Do NOT pry the smartkey apart.
If you don't have the manual, its best to find someone at the dealership to show you how to avoid damage to the key ($$$). Bring YOUR new batteries with you.
Its really as simple as changing the wiper blades on the car.
If you don't have the manual, its best to find someone at the dealership to show you how to avoid damage to the key ($$$). Bring YOUR new batteries with you.
Its really as simple as changing the wiper blades on the car.
