01 mercedes e320 w/smart key
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=108573
Printed Date: April 28, 2024 at 1:23 AM
Topic: 01 mercedes e320 w/smart key
Posted By: revolutionz_s13
Subject: 01 mercedes e320 w/smart key
Date Posted: October 31, 2008 at 4:49 PM
Anyone ever successfully installed a remote start on one? I have a e-class with the smart key, and have pretty much found all my wires. I can get the system(compustar 2w-sspro) to do remote start take over, and crank, so now I just need to get it to bypass the smart key to install on its own. I have a friend that works at a MB dealer down in florida that told me the IR on the key is only used to unlock the steering deadbolt, and all the start verification is doen through RF. I am thinking about trying the key with a 556UW and tying into the transponders antenna wires, but there are about 25 wires coming off the back of the key cylinder and I am not sure what wires they are. Anyone have any ideas? I think I have it narrowed down to either a brown pair twisted together that sits at ~3.6v all times, or a green pair twisted together that sits at 0v all times. I know people have put remote starts in these, hopefully someone will share their findings so I can be done with this headache. Thanks in advance. -Nate
Replies:
Posted By: t&t tech
Date Posted: November 03, 2008 at 6:55 PM
uhhhh, where's howie, and i think even he'll say turn around and run,  ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: joch1314
Date Posted: November 03, 2008 at 7:37 PM
yeah i agree with t&t....stupid sexy mercedes!
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...half of the truth can be worse than a lie. <----Roger Russell said that..
Posted By: revolutionz_s13
Date Posted: November 03, 2008 at 11:59 PM
I think I figured out a way I can do it. It involves a handful of relays and leaving the key in the car in the On position. I am not worried a bit about theft where I am from. Basically, I am just going to use relays to cut the power from the ignition and accessory wires from the key being on when I am not in the car, but still giving the remote start the ability to power these wires when activated. I drew out the wiring on paper tonight and it seems to make sense so i'll try it out later this weekend.
Posted By: howie ll
Date Posted: November 04, 2008 at 6:03 AM
Let's put it this way.......if you CAN, see I got that one in, PLEASE let us Doubting Thomases know! By infra red, do you mean plastic key that you place in a slot? I was under the impression you had to bury a parallel version of it with a spare key inside at about £1000!
Posted By: howie ll
Date Posted: November 04, 2008 at 6:04 AM
Sorry just thought of what you said, the twisted green pair is control CAN, the browns should be transponder control.
Posted By: ckeeler
Date Posted: November 04, 2008 at 9:56 AM
revolutionz_s13 wrote:
I think I figured out a way I can do it. It involves a handful of relays and leaving the key in the car in the On position. I am not worried a bit about theft where I am from. Basically, I am just going to use relays to cut the power from the ignition and accessory wires from the key being on when I am not in the car, but still giving the remote start the ability to power these wires when activated. I drew out the wiring on paper tonight and it seems to make sense so i'll try it out later this weekend.
WOW! your going to leave a key in a car in the on position in a car like that? first, how are you going to keep all those relays energized and not kill the battery? if someone were to disconnect the power to all those relays they could just start the car. and second, dont you think that is just a silly thing to do to a car like this? ive seen hack jobs and rigged up stuff, and even stuff that was installed very nicely but still a dumb idea, just plain dumb. and ive never heard of someone who owned a car like that and wanted to do something like that to it. not saying you cant do it or that you are dumb, but.........you definitly must not be making the payments on this car yourself are you? was it givin to you?
Posted By: t&t tech
Date Posted: November 04, 2008 at 8:24 PM
i for one would love to see this, won't u guys,  ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: revolutionz_s13
Date Posted: November 05, 2008 at 1:17 AM
ckeeler wrote:
revolutionz_s13 wrote:
I think I figured out a way I can do it. It involves a handful of relays and leaving the key in the car in the On position. I am not worried a bit about theft where I am from. Basically, I am just going to use relays to cut the power from the ignition and accessory wires from the key being on when I am not in the car, but still giving the remote start the ability to power these wires when activated. I drew out the wiring on paper tonight and it seems to make sense so i'll try it out later this weekend.
WOW! your going to leave a key in a car in the on position in a car like that? first, how are you going to keep all those relays energized and not kill the battery? if someone were to disconnect the power to all those relays they could just start the car. and second, dont you think that is just a silly thing to do to a car like this? ive seen hack jobs and rigged up stuff, and even stuff that was installed very nicely but still a dumb idea, just plain dumb. and ive never heard of someone who owned a car like that and wanted to do something like that to it. not saying you cant do it or that you are dumb, but.........you definitly must not be making the payments on this car yourself are you? was it givin to you?
yep. In the 25 years I have lived in this small city, only one car that I can remember has been stolen, and it was left running in front of a movie store. If you had to get up a half hour earlier to go out into -30deg weather every day for 2 months straight to start your car so it might get to a temp above zero inside before you have to go drive somewhere, you would understand why a starter is important to me. And yes, I bought this car on my own and am making the payments on it. Also, I designed the wiring so that when the car is off, the relays are not energized, therefore there will be a very minimal power draw from them.
Posted By: KPierson
Date Posted: November 05, 2008 at 7:09 AM
It really isn't 'that' bad of an idea. Wire all the relays in a NO configuration so there is no power required when the car is off. When you want to drive the car energize the relays (either with the remote start or a hidden switch - switch could be toggle, magnetice, rfid, key, etc). The cool thing about it is if the car is ever in an area where security is a concern you can pull the key. The remote start won't work, but you still have OEM security. Most likely, you can ONLY kill the main 12vdc feed that powers the ignition and accessory circuits (assuming there is on). You may also have to kill a key sense wire, but past that it shouldn't be too difficult. Good luck! ------------- Kevin Pierson
Posted By: howie ll
Date Posted: November 05, 2008 at 7:43 AM
It's not the relays, Kevin is as usual correct there, BUT leaving the key in the ignition, surely circuits are triggered as soon as you do this? For a start you will kill the sleeper circuits, secondly what about manufacturer's warantee? Anything goes wrong with that car and cost wise they wil have a field day with you.
Posted By: KPierson
Date Posted: November 05, 2008 at 8:14 AM
Thats why I mentioned cutting the key sense - if the car doesn't know the key is in the ignition then all is well. I'm not saying I would do it on MY car, but it's still an interesting alternative. I wouldn't worry so much about what the dealership would say as much as I would worry about the insurance adjuster! "wait, you did what? So, the key was IN the car?" ------------- Kevin Pierson
Posted By: revolutionz_s13
Date Posted: November 05, 2008 at 10:14 AM
there is no manufacturer's warranty anymore so I'm not worried about that. Yes, I will have to use relays for the 3 ignitions, the accessory, and the keysense wire. (Anyone know of a good relay satellite pack I can get? lol...so many relays...). I cant really see there being a problem with messing anything up since as far as the car knows, you are just " turning the key on and off". I shouldnt have a problem with keys getting erased since the car will see the same key all the time. However, this is my last alternative since there is no bypass solution for these smart keys yet. I will sell this car before I go with no remote start up here in the frozen tundra.
Posted By: t&t tech
Date Posted: November 07, 2008 at 5:23 AM
what happened, i'm dyiing to know.
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: revolutionz_s13
Date Posted: November 07, 2008 at 12:40 PM
just wired up the relay system last night...gonna attempt it either tonight or tomorrrow i think.
Posted By: t&t tech
Date Posted: November 08, 2008 at 5:03 PM
so did you try, ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: revolutionz_s13
Date Posted: November 08, 2008 at 8:36 PM
man you are impatient. I messed with it some more tonight...and I dont think it will work. The car only pulls the code needed to start the car when the key is turned to the start position. It must do this internally in the key cylinder thing, as none of the other wires coming from the key cylinder do anything when the key is turned to the start position. I am stuck again at this point. I think I will just sell the car, as much as I like it. I refuse to go through the winter with no remote starter.
Posted By: t&t tech
Date Posted: November 09, 2008 at 5:19 PM
finally good sense has prevailed ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: revolutionz_s13
Date Posted: November 09, 2008 at 10:24 PM
i dont really think good sense prevailed....i just ran out of ideas to try and make it work....if anyone else has any ideas lemme know.
Posted By: customak47
Date Posted: November 10, 2008 at 11:34 AM
I have heard of people installing remote starts on these vehicles, and from what I understand, you have to buy a factory infrared reciever from MB and install the key in the new reciever under the dash, but tie it in to the factory wiring with a relay to turn it on and off with remote start. In essence, the factory reviever is the 555uw, but I heard it costs a couple hundred dollars. I really have never run into anyone as persistent to try, but am really interested in the outcome. How many keys to this vehicle do you have and what city do you live in? (just wondering if I'm close enough to help on site)
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My rifle is my friend...
Posted By: ckeeler
Date Posted: November 10, 2008 at 1:00 PM
customak47 wrote:
I have heard of people installing remote starts on these vehicles, and from what I understand, you have to buy a factory infrared reciever from MB and install the key in the new reciever under the dash, but tie it in to the factory wiring with a relay to turn it on and off with remote start. In essence, the factory reviever is the 555uw, but I heard it costs a couple hundred dollars. I really have never run into anyone as persistent to try, but am really interested in the outcome. How many keys to this vehicle do you have and what city do you live in? (just wondering if I'm close enough to help on site)
a couple hundred? closer to a couple thousand.
Posted By: howie ll
Date Posted: November 10, 2008 at 1:30 PM
That's what I said in my first post, I once enquired here and its about £1000, or $1700 at current exchange rates + another key.
Posted By: revolutionz_s13
Date Posted: November 10, 2008 at 2:31 PM
I have 3 keys already so thats not a big deal...I wonder if I could find one in a junkyard somewhere and tear the key cylinder out...
Posted By: customak47
Date Posted: November 10, 2008 at 3:41 PM
I think its worth a shot if you can find one used.... good luck ------------- My rifle is my friend...
Posted By: revolutionz_s13
Date Posted: November 10, 2008 at 5:00 PM
the part that confused me is that the car seems to pull the code when the key is turned to start...so if people are wiring the key cylinder in parrallel, how are they getting the code to read? I metered every wire during the cranking cycle and every wire is doing what its supposed to with the key in the on position, which is essentially the same thing as leaving a key in the on position in a parrellel cylinder...i must be missing something here....anyone on here actually done one by wiring the cylinder in parallel? I've fried my damn brain trying to figure this out....I mean, leaving the key in the on position isnt any different than having a parallel cylinder with a key in the on position thats only activated during remote start.....
Posted By: t&t tech
Date Posted: November 10, 2008 at 5:31 PM
boy u got alotta patience, i'll give you that, i'm doubting it, but i hope ur efforts are not in vain. peace out.
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
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