sbaker25

I'm looking at buying my first Mercedes soon. I'm specifically looking for an E350 Bluetec and I want the P2 package with keyless go. I probably wouldn't have cared so much about keyless go until my wife bought a car that has something similar and I'm surprised at how much extra convenience it offers.

I've seen some ads on the internet where the listing says the car has keyless go, but the pictures clearly show a key in the ignition and not the push-to-start button. I thought the listing had an error.

Then today I came across one that lists the P2 package and keyless go, but it does not have the push-to-start button in the pictures. This time I checked the VIN and the build sheet clearly shows it came with keyless go.

Does anybody know what to make of this?

SnakeDoctor

You are ok. The dealerships don't usually insert the actual button until they deliver the car. If I were to guess, the button itself is generic across all their cars, and just relays the key's signal to the "key hole."

KEY08

You can buy the button on EBay if lost. It is just a piece of plastic, but obviously the car must be keyless go equipped. My button is rolling around in my console. I never use it and always use my key. When my key was in the same pocket as my iPhone the car could not identify it. I just stopped using it and popped out the button.

steinjr

sbaker25 is correct. I made the same mistake and was informed about the button being removed until delivery,

You can tell if it has Keyless Go buy looking at the door handles. If they have the additional sensor... the car has Keyless Go.

noka

My car actually came with two buttons (one spare). It's a super convenient feature to never have to pull the key out of your pocket.

Arrie

The button is often removed also for service work as the software updates require turning the ignition key to certain positions and the service techs like to use the key for that. I had my car returned a couple of times with the button on the passenger seat when they forgot to put it back in place.


Keyless-go is very nice. I never take my keys out from my pocket other than once when the battery got so weak the car did not see it without taking it out.

sbaker25

Thanks for the info. If it's just a plastic cover, can I assume that I would just be able to push the ignition anyway with the key in my pocket? I kind of like that I can use the key if I prefer. I suppose that could be helpful if my key doesn't communicate properly.

This is quite a relief because I have learned that the combination of Bluetec, sport package, and P2 is hard to find.

meangene924

If you're looking for a preowned vehicle a lot of dealerships remove them as well to prevent theft.

BenzV12

The Keyless Go button was into the glove box with original package when I got my car from the dealer .

hyperion667

I plasti-dipped mine lol and I have red cf one in my cls.....very nice but expensive

KEY08

It's not just a cover. It has a protuberance that engages the ignition exactly as the key. I never tried pushing my finger in there and don't plan on doing it any time soon. Good luck with that!

pamiboy

Absolutely correct. The ignition is not meant to be pushed with finger. Your finger probably is not that thin and hard as the button....LOL but you are welcome to try.

rediesel

I really like the red CF, but can't justify the cost.

hyperion667

I tired to forget about it lol


"the best (usually the most expensive) or nothing"


do you have CF in your 507?

Alex.currie44

It is not just a plastic cover. It is integrated into the communications of the key and the ignition as part of the rolling code security system to prevent car theft.

KEY08

^ say wha?????

Alex.currie44

The button is not passive on my car.
The doors open/lock via LF radio signals. When things pair up when you touch the door handle the doors will unlock or you can push the button on the fob. You lock the doors by touching the pads on the door handle or by the fob or just by walking away. When the system knows the fob is outside the car and loses signal it will automatically lock.
However, to start the car, communication is by IR signal from the key or from the button. There is a pairing of the key and the ignition switch that matches the rolling code needed to start the car. The car sets a new code every time it is shut off. If the key and car don't match it won't start. That is why a Benz cannot be hot wired.
The button replaces the key and if you look at the male side of it there are small openings and other stuff that allow it to replace the key.
That is my understanding of how it all works.
Button or key. Your choice but the button is not passive. It is part of the system.

KEY08

I have Keyless Go, so I know how it works, but the Button is a Button. It engages the ignition switch with 3 sequential positions, the last of which is the actual starting of the car. It does nothing else. It has no electronics in it that perform any of the functions you have illustrated. Those security functions all happen with the Keyless Go smartkey and its communications with the vehicle. If you swapped buttons with me, your car will still start with no issue as long as you had your key with you. The button is a button to push and that is all. For what it's worth my button is sitting in my console. I use all of the Keyless Go entry and exit functions, but like to use the key for starting my car. Old habit...

Alex.currie44

Well we obviously don't agree. My button is a single function not three.
To get back to the original question, the key or button work either way.
That is what sbaker25 wanted to know.

KEY08

Wrong. Go out to your car and DO NOT TOUCH THE BRAKE PEDAL. Push the BUTTON. Once, twice, what happens?
Then, read your manual.
"or just by walking away. When the system knows the fob is outside the car and loses signal it will automatically lock."
My 2010 will never automatically lock as you have stated either. It must be something new.

hyperion667

keyless go FTW

screw991le

My 10' also does not lock as I walk away, as I shut the door, and walk away In one fluid motion I swipe the back door's lock pad.

Arrie

My car (2010) does not automatically lock the doors when I walk away. I have to either use the button on the smart key or touch the door handle, which is what I always do. My key stays in my pocket at all times. Would actually be a nice feature to have it automatically lock when key leaves the area of the car's range. Do net models have this now?


There is one automatic locking on my car. This is if you unlock the door but do not open a door the car will automatically lock them again after about 45 seconds or so. This probably is in place to lock the car in case you accidentally push the unlock button when walking away from it.


There is not and cannot be IR signal from the key to the ignition for starting purposes. My key is in my pocket and there is no way any IR signal can be seen by the car from inside my pocket. It is radio signal from the key telling it is present and the car will start when brake is applied and start button pushed.


Rolling code there also cannot be. If there was the car would not start with the other key it comes with as the code would be set for the key last used. The keys, normally two, are programmed in the car. You can program more keys if you want but the car comes with two. These are permanently programmed and there is no rolling code. If key is lost the programming for it must be deleted from the car so the lost key will not work any more if used by a wrong person.


Hot wiring don't work if you don't have the right key with you. This is because the theft protection disables the electronics for starting it if the correct key is not inside the car, i.e. the key that was programmed for the car. No rolling code here.


I have not looked at the button in my car but I think it is just a plastic piece that has small hooks to keep it in place and it pushes the button inside the ignition key slot when pressed.

Alex.currie44

Well maybe - just maybe - they did something different on the 2011 model because it locks when I get about 30-40 ft from the car.
Sorry but all MB as we know are not the same in the same series. Things change.
Oh?
By the way. My car will not start under any conditions without the foot on the brake routine. Something else that is different.
Keep in mind guys I had a 2003 W211 and a 2009 W211 and all the gadgets on the 2003 were gone from the 2009 as the model run came to an end.
MB is famous for changes. All Benz's are not born equal!
I have run into this in other discussions regarding differences in the 2011 and 2013 and 2014 MYs.

KEY08

No keyless go equipped car starts without your foot on the brake. I wanted you to see that your KG button had additional functions with YOUR FOOT OFF THE BRAKE. You never did what I asked you to do did you?
You spew lots of misinformation in this thread and these cars are mostly born equal unless you are the buyer it appears.