E-Class (W211) 2003-2009

Changed battery in Keyless Go - lost function

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Old 02-14-2009, 02:14 PM
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E320S4
Changed battery in Keyless Go - lost function

I recently changed the batteries in one of my keys.
Now when touch the driver's door, only the driver door unlocks.
When I touch any other door, all unlock.

My other key still unlocks all doors when I touch the driver's door.
Anyone know how to get all the doors to unlock again?

thanks.
Old 02-14-2009, 03:36 PM
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Press & Hold Lock & Unlock untill LED blinks in key. This is the toggle for "Driver Only" unlock & "Unlock All" mode.
Old 02-15-2009, 01:04 PM
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I didn't know that. Thanks Barry for the tip.
Old 02-16-2009, 01:51 AM
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Originally Posted by Barry45RPM
Press & Hold Lock & Unlock untill LED blinks in key. This is the toggle for "Driver Only" unlock & "Unlock All" mode.
It worked. This forum is great!
Old 03-09-2009, 04:48 PM
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Great deal on key batteries !

My batteries just died in one of my keys and I decided to check out Ebay pricing and came across this deal for 5 Energizer CR2025's @ $4.60 delivered !

Click here for seller

The Shack wants more than that for one.
I received them today and they are as advertised. Made in Indonesia, but genuine Energizer and FRESH.
Old 03-14-2009, 03:55 PM
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Well, as it turns out, the batteries I removed (that were bought locally last yr) were also made in Indonesia.

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