SL/R231: Replace Key Fob Battery?
Thread Starter
Senior Member
Joined: May 2012
Posts: 395
Likes: 1
From: Florida
AMG SLS & S coupe
Replace Key Fob Battery?
Two days ago I picked up the car after the 10,000 service. The next day (what do you expect) I got the replace key fob battery.
My Corvette's key battery lasted five years.
If the keys battery is dead, will the car still start with the key in the ignition?
My Corvette's key battery lasted five years.
If the keys battery is dead, will the car still start with the key in the ignition?
Thread Starter
Senior Member
Joined: May 2012
Posts: 395
Likes: 1
From: Florida
AMG SLS & S coupe
I just changed the battery in the key fob and all is well again.
On the first start, the MFD, showed the fob battery low. I restarted the engine and the warning went away. All bow the the electronic Gods.
On the first start, the MFD, showed the fob battery low. I restarted the engine and the warning went away. All bow the the electronic Gods.
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Joined: Dec 2011
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W212 FL
Good to see it worked , a friend of mine said that you can remove ENGINE START STOP button on the dash and start your engine with a conventional way , by inserting your smart key in it's place should key fob's battery goes dead
Senior Member
Joined: Jan 2004
Posts: 299
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From: Atlanta, GA
1988 560SL (sold); 2001 E430 (sold); 2004 SL500; 2009 CL550
Yes you can remove the button in the dash; but to replace the key batteries you just need to remove the valet key and then within the slot there is a lever to release the cartridge that holds the two batteries. Get them at Radio Shack.
It's the same set up as the key to my CL and SL.
It's the same set up as the key to my CL and SL.
Thread Starter
Senior Member
Joined: May 2012
Posts: 395
Likes: 1
From: Florida
AMG SLS & S coupe
I like the way the fob opens for a new battery. On my '08 Z06, I had to use a dime in a slot and twist it to open, the tab that holds it closed broke.
My big question was, with a dead battery, will the fob start the car when it is inserted in the ignition?
I'm guessing that it's keyless function will not work way before the battery is dead.
My big question was, with a dead battery, will the fob start the car when it is inserted in the ignition?
I'm guessing that it's keyless function will not work way before the battery is dead.
Last edited by Daytona-flyer; Mar 30, 2013 at 05:07 AM.
Senior Member
Joined: Mar 2007
Posts: 379
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From: MA
13 SL550, 14 E63 Wagon, 15 S550, 11 M3, 08 F430 Spider, 12 ML350
I like the way the fob opens for a new battery. On my '08 Z06, I had to use a dime in a slot and twist it to open, the tab that holds it closed broke.
My big question was, with a dead battery, will the fob start the car when it is inserted in the ignition?
I'm guessing that it's keyless function will not work way before the battery is dead.
My big question was, with a dead battery, will the fob start the car when it is inserted in the ignition?
I'm guessing that it's keyless function will not work way before the battery is dead.
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