S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

2007 S550 Cant find Key!

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Old Aug 7, 2016 | 09:52 AM
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Benz S550
2007 S550 Cant find Key!

Hey guys,

This might seem like a silly question. I lost my smart key. ive been looking for it since yesterday. The car has the keyless start "push to start button." im trying to figure out if the smart key is somwhere in the car, or if i misplaced it somewhere else. When i open the car door, i get the "dont forget to take your key" message on the dash. Also, i can lock/unlock the doors with the automatic door lock button. Does this mean the key is somewhere in the car?

thanks
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Old Aug 7, 2016 | 10:26 AM
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If the car starts the key is in the car.
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Old Aug 7, 2016 | 10:36 AM
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You'll get the "Don't forget your key" message whether your key is in the car or not. You can also lock your doors while sitting in the car without your key. Mike is correct about trying to start the car. That would confirm if the key is in your car or not.
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Old Aug 7, 2016 | 03:05 PM
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im getting the "no key" signal when I try to start it. However I have a spare key, but it's not working. I removed the push button and tried to start the car manually but it's not turning. Is there a way I can maybe reprogram the spare key and get it to work? Thanks
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Old Aug 7, 2016 | 05:34 PM
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Originally Posted by whatsup?
im getting the "no key" signal when I try to start it. However I have a spare key, but it's not working. I removed the push button and tried to start the car manually but it's not turning. Is there a way I can maybe reprogram the spare key and get it to work? Thanks
Change the fob battery in the spare key and try again.
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Old Aug 7, 2016 | 08:08 PM
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i replaced the battery and its still not working. what else should i try doing? thanks
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Old Aug 7, 2016 | 11:52 PM
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After you replaced the battery in the spare key did it unlock/lock the doors?
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Old Aug 8, 2016 | 05:13 AM
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No it's not locking/unlocking the door.
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Old Aug 8, 2016 | 08:47 AM
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Your original key is not in the car.

Your spare key is broken.
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