Lost Key- how to replace?
My son has a 2006 e500. He has it parked at his college and misplaced the only key we had. The car is currently locked.
We have AAA, I am wondering if they will be able to get it to the dealer? Would they need to get inside to tow it? Once the car is to the dealer, how much do they normally charge for a key and programming?
Thanks in advance, Mike.




Go there with proof of ownership and place the order. Usually new keys overnight, so you can have it in 2-3 days.
Now some dealers require to see the car to hand you new key.
They might tell you about necessary programming, what is BS
So you will have to use your negotiation skill to get the key in your hand without more hassle.
Worse come to worse, I would rather pay dealer's technician to drive to the car with new key, than taking your chances with towing.
BTW when placing the order, get 2nd key as well.
So called "service key" (no remote) suppose to cost less than 40 bucks.
Coming to the price, last time I bought the key about 3 years ago, they retail at $180, but some dealers don't hesitate to ask >$400
Last edited by kajtek1; Jul 4, 2017 at 02:19 PM.
Do what Kajtek1 said and go the dealership to order new keys. Proof of ownership and VIN number should be all you need. You keep one key and give the other to your son, so you don't run into this issue again.





It is also possible to replace each of the eight keys two times. A replacement key is when it must sync to the car by being inserted into the car and waiting - sometimes a good bit of time. The key transmits a pseudo random rolling code each time it is authorized to start the car. So a different code is transmitted each time. Pretty typical stuff. But when you buy a replacement for key 1 (for example) you have to wait for the car to work through the entire rolling code sequence until the replacement key reaches the same point in the code sequence as the original key. With a key that has been used for 15 years, this could take a while.
MB keeps records of every key issued for every car. So the parts guy will know whether you are getting a fresh, unused key or a replacement for an existing key. And you can set expectations for whether it will work immediately or not.
If you buy a key in a new slot, the existing key will work if it is found. If you buy a replacement for an existing key, the old key will not work if it turns up.
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They always give you key that goes into new slot.
That said, getting replacement key might be good idea if previous key was lost on the campus.
By programming replacement key, the old key should be deleted from car memory, what is a good thing.
My guess is that not too many technicians are familiar with this high-end programming and they hesitate to do that.
Either way, if dealer sucks your for programming, make sure he will give you confirmation that the old key was deleted.






