E-Class (W211) 2003-2009

SmartKey/Keyless Go question

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Old Jul 16, 2007 | 02:26 AM
  #1  
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Question SmartKey/Keyless Go question

Searched both in manual and online (although not exhaustively) but can't figure out what makes it a smartkey. Thought each key would at minimum retain seat/wheel/mirror settings with use but can't find any reference to that. Seems to be just a remote that allows the car to be started and locked/unlocked by either remote or touch. My Volvo which I considered retarded would move seat and mirrors into position when unlocked with the corresponding remote. Maybe I'm the one that's retarded here and have completely missed it. Anybody?
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Old Jul 16, 2007 | 08:27 AM
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The keys do retain personal settings, that's why they're color coded.

The feature is activated through the MFD. Do a search on "key dependant".

GL.
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Old Jul 16, 2007 | 10:13 AM
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It does retain the settings (as Miguk stated once you turn it on in the MFD) but you still have to press and hold the memory button when you get in the car for the seat to move.

This is independent of the easy entry feature which moves the wheel and/or seat when you turn the car off.
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Old Jul 16, 2007 | 03:07 PM
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No auto seat moving on the '07s. It was supposed to work on my '04, but it was a crappy implementation of a feature that works on all GM cars so equipped, so it was eliminated.

There is NO "Make Key dependant" setting in the MFD settings on the '07 either anymore.

What features they left in these cars, works as described in the manuals. Thats why there are few complaints about features not working. The ones that were "goofy" or misunderstood, or were crappy, are gone.
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Old Jul 17, 2007 | 01:36 AM
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So, if it doesn't move the seats without pressing the memory preset button what settings does it retain? Don't need a smartkey to press the memory button
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Old Jul 17, 2007 | 07:59 AM
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The key FOB retains two (2) settings per FOB:
  • one setting when the key is inserted (like a normal key), and
  • seperate settings when used keyless
I explain: if I walk up to my car and pull the handle, the seat should already be in a retracted postion (easy entry/exit), when you press the [start] button the seat will move to whatever position has been memorized for "keyless"; however, if you insert the key into the ignition (instead of pressing the [start] button) the seat will move to whatever position had been memorized for "keyed" operation. -- The same applies to the second key.

When you turn off the car, the seat will retract and the steering wheel will lift to allow "easy entry/exit". Then the cycle repeats.

Side note: I think the mirrors are affected by the key settings also. And the driver-side door may need to be closed for the seat to move into position.

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Old Jul 17, 2007 | 08:46 AM
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Originally Posted by Miguk_Saram
The key FOB retains two (2) settings per FOB:
  • one setting when the key is inserted (like a normal key), and
  • seperate settings when used keyless
I explain: if I walk up to my car and pull the handle, the seat should already be in a retracted postion (easy entry/exit), when you press the [start] button the seat will move to whatever position has been memorized for "keyless"; however, if you insert the key into the ignition (instead of pressing the [start] button) the seat will move to whatever position had been memorized for "keyed" operation. -- The same applies to the second key.

When you turn off the car, the seat will retract and the steering wheel will lift to allow "easy entry/exit". Then the cycle repeats.

Side note: I think the mirrors are affected by the key settings also. And the driver-side door may need to be closed for the seat to move into position.

Yes the morrors are memorized too..
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Old Jul 17, 2007 | 10:24 AM
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Originally Posted by Miguk_Saram
The keys do retain personal settings, that's why they're color coded.

GL.
Color coded ?? Mine are exactly the same. I had read in the manual that they were different colors but t hought that it was a mistake (like so many others)
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Old Jul 17, 2007 | 10:31 AM
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The color difference is on the locking tab for the mechanical key. It's not obvious until you know where to look, but it's there.
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Old Jul 17, 2007 | 10:35 AM
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Originally Posted by cyclerider
The color difference is on the locking tab for the mechanical key. It's not obvious until you know where to look, but it's there.
I know, but both of mine are exactly the same dark gray.

Edit : Bought the car pre owned so maybe the previous owner lost a key and when the replacement was ordered, no one thought about the color. BTW, what should the other color be ?

Last edited by starbrite; Jul 17, 2007 at 10:38 AM.
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Old Jul 17, 2007 | 10:39 AM
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Maybe the keys weren't different in 2004, but they are now. One tab is silver-grey and the other tab is black.
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Old Jul 17, 2007 | 10:43 AM
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The keys on my '03 are different colors... One tab is silver-grey and the other tab is black.
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Old Jul 17, 2007 | 11:00 AM
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Plus the manual does state that they should be. Also, there is a slight nick in the white "N" in the word "panic" on one of the keys.
I always thought that it was just nicked by accident but it may have been done intentionally to differentiate between the keys.
No biggie, because that's how I've been telling them apart.

Edit:Now that I look at it carefully, under a magnifying glass, it's not a nick but a perfect red circle. So it must have been done just for the reason above. Boy, you learn something new every day.

Last edited by starbrite; Jul 17, 2007 at 11:04 AM.
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Old Jul 17, 2007 | 12:39 PM
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The tabs on my '04 were different too.

Also, I believe mirror positions and climate control settings are memorized to the key being used.
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Old Jul 17, 2007 | 12:50 PM
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Originally Posted by Barry45RPM
The tabs on my '04 were different too.

Also, I believe mirror positions and climate control settings are memorized to the key being used.
Oh yes the climate control are memorized too.. One day I missed placed my key and used the spare and the heat came on with it was like 80 out side....lol.
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Old Jul 17, 2007 | 01:14 PM
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Originally Posted by MissMyBenz
Searched both in manual and online (although not exhaustively) but can't figure out what makes it a smartkey. Thought each key would at minimum retain seat/wheel/mirror settings with use but can't find any reference to that. Seems to be just a remote that allows the car to be started and locked/unlocked by either remote or touch. My Volvo which I considered retarded would move seat and mirrors into position when unlocked with the corresponding remote. Maybe I'm the one that's retarded here and have completely missed it. Anybody?
To me the key is a smart key even if it was the normal one, not a keyless-Go key. I've interpreted the smart part being the burglar protection thing that the car only accepts an authorized key. The cryptographic algorithm specifically on the key, the car signaling a challenge number to the key, the key responding accordingly and only a valid response being accepted. The challenge is random and you cannot calculate the response from a known challenge-response pair.

Of course the rest of the key functionality ask some "intelligence" but I don't find them asking a "smart" key

This all basically opposed to a traditional mechanical key where you "only" have to copy the mechanical/visible signature and the copy key works fine in the car.
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Old Jul 18, 2007 | 12:07 AM
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To the best of my knowledge, I have no option in the menu for "key dependent". Does that mean it will not do as stated? Haven't had an opportunity to try to "memorize" as instructed as above. As a note, the keys are two diferent colors, gray and black. Can anyone with an 07 confirm?

Last edited by MissMyBenz; Jul 18, 2007 at 12:17 AM.
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Old Jul 18, 2007 | 08:00 AM
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There is NO "Make Key Dependant" choice on the '07. Those menu choices were streamlines. You can also only select to have the lights delay turning off when you leave the car, but you can no longer set for how long.
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Old Jul 18, 2007 | 09:34 PM
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Originally Posted by MissMyBenz
To the best of my knowledge, I have no option in the menu for "key dependent". Does that mean it will not do as stated? Haven't had an opportunity to try to "memorize" as instructed as above. As a note, the keys are two diferent colors, gray and black. Can anyone with an 07 confirm?
Both keys are the same. I only use one hence I have not tried if the seat settings can be different for each key, but I doubt it; the manual does not reference this fact.
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Old Jul 18, 2007 | 10:24 PM
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I'm really disappointed in this blatant omission of convenience features. Had we not ordered keyless go, the memory features are as advanced as my parents old Volvo 850 from 1997. Admittedly, it doesn't matter too much because I rarely get the opportunity to drive it, but... I will ask my dealer about this. Is there any way to update the software to include this feature in the menu? It sounds like it's purely software. Really sucks.
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Old Jul 19, 2007 | 09:14 AM
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The simpler menus are really not an omission. The stuff they "omitted" either worked poorly, weren't understood by American MB Vehicle owners, or were dissapointing in their implementation and generated complaints to MBUSA and "check for proper operation" visits at the service departments.

For instance, while you can now set the headlights to stay on after you exit the car, you don't have a choice of 3 lengths of time for them to stay on... which is OK because the choices in seconds were the equivalent of: "Too long, Much too long, or Way Too Long (LOL) . The default time you have now it good for almost everyone, and the menu is shorter & cleaner as a result. American cars don't even get the Canadian "one of your tire's air pressure isn't right... check them all" DIC warning, because the previous optional TPMS was so troublesome to MBUSA on many of the E classes that had been so equipped. (I personally can vouch for that!) Its "omission" is what makes the current car so trouble free, and always enjoyable now. Is that a great thing to do? No, but they had to do stuff like this to get out of the cellar with JD Powers. You'll never build a great car later if you get run out of the business now. The W211 was either rushed to market in 2003, or designed at a Brewhaus, or had very poorly sourced components, or all three. It DID cost MB their "Sterling Reputation". The current 07+ cars are really, really good cars.

Some of the features in these cars were Waaaaay overthought... to the point of exhaustion and inoperability. Others were crap. Thats why they're gone. But, STILL, no other car drives or transports you like a Benz.

I don't know if MB will ever build a car with up to the second "Gee Whiz" electronics that are ergonomically, useability, and dependablity perfect. As of now, its not really where the Germans excell.

Last edited by Barry45RPM; Jul 19, 2007 at 09:22 AM.
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Old Jul 19, 2007 | 09:35 AM
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Originally Posted by Barry45RPM
The current 07+ cars are really, really good cars.

Some of the features in these cars were Waaaaay overthought... to the point of exhaustion and inoperability. Others were crap. Thats why they're gone. But, STILL, no other car drives or transports you like a Benz.

I don't know if MB will ever build a car with up to the second "Gee Whiz" electronics that are ergonomically, useability, and dependablity perfect. As of now, its not really where the Germans excell.
Well said. If I could merge the rock-solid engineering of my E550 with the electronics of the car I traded in - a Lexus IS350, I would be an extremely happy camper.
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Old Jul 19, 2007 | 03:54 PM
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Originally Posted by Barry45RPM
No auto seat moving on the '07s. It was supposed to work on my '04, but it was a crappy implementation of a feature that works on all GM cars so equipped, so it was eliminated.

There is NO "Make Key dependant" setting in the MFD settings on the '07 either anymore.

What features they left in these cars, works as described in the manuals. Thats why there are few complaints about features not working. The ones that were "goofy" or misunderstood, or were crappy, are gone.
Preach on!!!!!!!!!!!!
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Old Jul 19, 2007 | 04:03 PM
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Speaking of features , my '04 manual indicates that the Nav volume can be adjusted up or down.
However, in the command menu the choices are 3 or 4 (I forget which) types of "fade in/out" options,
no vol adjustment whatsover, that I can see.
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Old Jul 19, 2007 | 04:53 PM
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The adjustment you are talking about is how much you want the nav to fade out the audio source you are currently listening to. To make the nav voice louder, put in a destination & get going. When she tells you to do something, hit the repeat button & while she is talking, increase the volume either on the comand or wheel. All the NAV comands forever after will be at that new volume. The music source volume will remain at their old volume.

The music fade out is a different adjustment. If you are unable to distinguish between the music & Nav comand talking & singing at the same time, you would adjust it to make the music volume lower in addition to increasing the NAV directions. (That way you don't have to have the NAV chick scream at you.)

Last edited by Barry45RPM; Jul 19, 2007 at 08:10 PM.
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