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Lost Key Fob

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Old Feb 29, 2020 | 01:55 PM
  #1  
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Lost Key Fob

First, I admit this post is a stretch.

We have lost a key fob for a MY19 E Class. We have turned the place upside down looking for it. I am sure you all know what it takes to replace one. So, here goes, is there any sort of trick way of finding one. Cause it to give off a signal, Use a sensor, Use Mercedes Me Connect. Before I pay a fortune for a new one.
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Old Feb 29, 2020 | 05:18 PM
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Is it a regular key or a keyless go key? With keyless go, you could do what the car thieves do, get something that retransmits the signal from the car. Not sure if it will work on an 19, I think MB redesigned them so that they shut off after 5 minutes of no movement but don't remember what year that started.

Only real way to find it is to use something like Tile and put it on before you lose the key.

https://www.amazon.com/Tile-RE-19001-Mate-1-Pack/dp/B07W9BBCTB https://www.amazon.com/Tile-RE-19001-Mate-1-Pack/dp/B07W9BBCTB

I would suggest that you keep looking, some report that the key is now in the $500-$750 range for a replacement. You might be better of with just the one key with tile and putting it in one spot and also with a bunch of other keys/keychains so that it's harder to lose.
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Old Feb 29, 2020 | 06:17 PM
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The Tile is in the top drawer of the dresser. You are clearly correct. It belongs on the remaining key. Dumb on my part.
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Old Mar 1, 2020 | 07:38 AM
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Are you missing the key from the last person to drive it? If so that means it has to be there near where the car is and I’d keep looking. Otherwise it could be anywhere, like where my glasses are right now on vacation.
I priced one out about 5 years ago for a 2010 E63 and was quoted $595 if I remember correctly. And yes, these newer keys “go quiet” after a short time.
Good luck.
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Old Mar 1, 2020 | 04:04 PM
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I believe it is a keyless go key if I understand the terminology. And 5, yes the car was at the house, and the everyday FOB just could not be found and so we got the spare out of the drawer. The regular FOB had a key ring attached with 10 or 12 shopping i.d.s so you would think it would not get lost. BAC, Sometimes we lose things while we are away like your glasses, but we also loose things around the house. This time we know it was in the house, and hope it is still her buried in some drawer, etc.

All suggestions and comments are appreciated.
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Old Mar 1, 2020 | 04:23 PM
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Here are some ideas......

- Is it in another coat pocket? If the last person to drive the car was, for example, wearing a coat for special occasions or a particular suit jacket, maybe the key could be in there?
- Have a look down the sides and gaps of your sofa/couch... I've lost things down there before, even large items including a whole smartphone for a day!
- Is it under the bottom of a bed? I've lost things before that fell and made their way under a bed.
- Have a look at places where you keep keys for various things... Someone might have accidentally picked up your Mercedes key and put it there
- It could still be in a bag that was used that day?

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Old Mar 1, 2020 | 05:14 PM
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Make sure it is not in the car: One way to do this is:
  • put your remaining key in your pocket;
  • go to your car
  • try to lock the car by sliding your finger along the outside handle
If the car does not lock, that means that the "lost" key is in the car.

As you drove home, the key is almost 100% in your house somewhere and eventually it will show up.

I remember 30 plus years ago, when my daughter was only 5 and I could not find my keys to the car: she said:

"Daddy your did not lose your keys: You just cannot remember where you put them!"

Same thing here: as you drove home, the keys are in your house somewhere. They will eventually show up!

Hope this helps.
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Old Mar 1, 2020 | 05:34 PM
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Originally Posted by JTK44
Make sure it is not in the car: One way to do this is:
  • put your remaining key in your pocket;
  • go to your car
  • try to lock the car by sliding your finger along the outside handle
If the car does not lock, that means that the "lost" key is in the car.
Ah, now THAT is a good test...
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Old Mar 1, 2020 | 05:46 PM
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Originally Posted by DFWdude
Ah, now THAT is a good test...
Originally Posted by JTK44
Make sure it is not in the car: One way to do this is:
  • put your remaining key in your pocket;
  • go to your car
  • try to lock the car by sliding your finger along the outside handle
If the car does not lock, that means that the "lost" key is in the car.
You will need to leave your "other" key fob out of range. As long as there is a detected key outside the car it will lock.
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Old Mar 1, 2020 | 05:51 PM
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Dear UA549:


You may be correct.

However, when I travel I keep a spare key in my brief case which I leave in the car. The second key I keep in my pocket.

When I exit the car I have difficulty locking the car either using the key fob in my pocket or touching the handle - because the other key is still inside the car.

Just my experience - of course your experience might be different.
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Old Mar 1, 2020 | 06:35 PM
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The easiest test (in my opinion) of whether the lost key is in your car is................ to open the car with the spare key, then go and put your spare key in the house, then come back out to your car and push the start button... if the engine starts, the lost key's inside the car somewhere!

Last edited by SunnyC257; Mar 1, 2020 at 06:37 PM.
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Old Mar 2, 2020 | 07:30 AM
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I’ve been able to get out of the car and lock the doors with my wife’s purse and other key inside it, in the car. That test might not work for you.
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Old Apr 29, 2020 | 02:22 AM
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So in other words, there is no aftermarket key fob that one can get to replace a lost Fob? I went today (MB San Diego) and the fob, $366, the blade key so you can use the fob on a key chain $99 = $502 w/tax + 1 hr of labor @ $185 = $687.00

any gouge on where to acquire and get programmed a key fob is appreciated....
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Old Apr 29, 2020 | 07:21 AM
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Originally Posted by iu89
So in other words, there is no aftermarket key fob that one can get to replace a lost Fob? I went today (MB San Diego) and the fob, $366, the blade key so you can use the fob on a key chain $99 = $502 w/tax + 1 hr of labor @ $185 = $687.00

any gouge on where to acquire and get programmed a key fob is appreciated....
No, there is no aftermarket source. The whole point with MB keys the last 20 years is to tightly control the availability of keys to halt or limit car theft.

So, if you lose a key fob, you won't be able to steal your own car. (This sounded funny when I thought of it... maybe not so much 2-seconds later)
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Old Jun 12, 2020 | 08:26 PM
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DFWdude is woefully out of date. The Key is $666.00, the Key Mechanic (the physical blade key) $117.00, Programming $87.50, for a Grand Total (including tax, drum roll please) of $938.62. And so I challenge everyone out there to come up with a more outrageous price for a part. The Best or Nothing or "Bend over Dear Customer."

Last edited by Hundens; Jun 12, 2020 at 08:51 PM. Reason: typo
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Old Jun 12, 2020 | 09:40 PM
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Originally Posted by Hundens
DFWdude is woefully out of date. The Key is $666.00, the Key Mechanic (the physical blade key) $117.00, Programming $87.50, for a Grand Total (including tax, drum roll please) of $938.62. And so I challenge everyone out there to come up with a more outrageous price for a part. The Best or Nothing or "Bend over Dear Customer."
You're disputing the charges for the key with iu89, not me. I haven't quoted any prices.

I may be old, but I'm not out of date.
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Old Jun 13, 2020 | 12:15 PM
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My mistake.
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