DIY Push Start Ignition - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

Closed Thread
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 07-13-2004, 08:52 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
In response to the recent questions regarding my Push-Start, I am including an updated DIY and further instruction on how to use this mod to start the car in the event the ignition cylinder fails or to make the car truly keyless. On pre-EWS cars (> mid 95) this will eliminate the need for the key altogether. On cars with EWS (<96+) you will still need to insert the key but do nothing with it. Make sure that you double lock the car when doing this to a pre EWS car, as then anyone could drive it away.

For the basic Push-Start you will need:

1 30-Amp relay
3-4 feet of 14 or 16 gauge wire
Electrical tape
Momentary-press switch

To eliminate key use altogether, in addition to the above you will need:
1 Toggle switch with a high amperage rating.
4 feet of 10 gauge wire

Also, if you want to add this feature but don't quite know how or don't have all the tools to install a switch, I will now be offering a kit for $30 shipped that includes the switch (of your choice) pre-mounted in an expansion tab, prewired relay, all wiring and wire connectors, and start decal. All wires will come with connectors already attached, so all you have to do is take off the under panel and plug them in. PM or email me for more info. For $45 I will include the extra materials for the Totally Keyless option.

For those of you with the resources to tackle this on your own here you go.

Part One: Trim removal

In order to install the button, you will need to access your ignition harness. To do so, you must remove the lower dash piece and the metal guard behind it. The dash is held in place by 3 Phillips screws. There is a small speaker attached; simply disconnect the plugs to completely remove the panel.



The guard is held in place by three bolts, all 10mm.

You can also remove the heater vent if you wish, it just snaps in/out of place. Next, you will also need to remove the OBC and sunglasses holder. The OBC is best removed by sliding a credit card under it at an angle and pushing out from behind it. There is a small finger-sized hole under it to push from the back. Once enough has moved forward, pull it toward you. You can unplug it to remove it if you wish, but you'll have to reset it later. To remove the accessory outlet and sunglasses holder, simply pull forward on the unit; it snaps in and out. To mount your switch in one of the expansion tabs, press on one of the retaining tabs on the back and it will pop out. You can mount the switch however you want in it.

Part Two: Wiring The Switch

There are going to be three wires you'll need to access: Ignition, Starter, and ground of your choosing. The main ignition wire is the large green wire coming out of the ignition switch. You will need to tap that wire, using a splice or removing the insulation and wrapping the new wire around it. I suggest the latter, as the former did not work for me. Repeat the same procedure for the starter wire, which will be black and yellow or black and green. BMW used different colors one certain cars throughout the production run.

You'll also need to run a wire from the area your switch will be in to the other wires. There will be a small gap you can feed the wire through and pull it around.

The switch you're installing acts as a ground. I suggest splicing into the accessory ground. In between your ground splice and your wire to the ignition is your switch. Attach one wire to one prong and vice versa. Easy enough.

At the end of the wires near the ignition, I suggest attaching a spade connector, however tape will work.

Part Three: The Relay

In order to make it all work, just plug the spade connectors into the relay as shown below, or tape the connections. Depending on where you buy the relay, it will have four or five prongs. In the event it is a 5-prong, the middle prong is not used. The 4-prong works just the same.



At this point, the car will start when the button is depressed and the ignition is set to "Run". If you wish to retain use of the key start, end now. If you wish to make it a button-only start, cut the yellow/black wire before your splice.

Part Four: Show Off

If all you are doing is the button, reassemble and show off.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 07-13-2004, 08:52 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
Part Five: Going Totally Keyless

If you are here you are either a real show off, congratulations, or your key cylinder has died and you don't want to pay $600 to replace it all, congratulations. The rest of this information was originally written by bpowers and the pictures are also taken by him. The result of our collaborative efforts produced this extra feature, and so I am including it here.

Remove the black housing from the steering column (I did this last year, so the details are a little weak). I believe that there are 2 screws holding them in place, one for the top piece and one for the bottom. They also "click" together, so be careful when taking them apart; I cracked mine a little). On the left side of the steering column you will see the opposite end of the lock cylinder (directly opposite of where you put your key in). Attached to this will be the ignition switch - it's a maroon cylinder attached to the cylinder with several wires running from it; most notably, you will see red, green, purple, and black/yellow.

There are two small screws which hold the ignition switch in place. Once you remove those 2 screws, the ignition switch can be removed from the lock cylinder (and will dangle there since the wire harness for the ignition). You will see white plastic inside (note that my picture is not accurate as I stripped my ign. switch from a year of starting it with a screw driver). At this point, you could literally start the car with a screw driver (NOTE: key must be in the ignition if the car is EWS equipped).
With the car off, you can now remove the ignition switch entirely. To do so, you will need to unplug the harness. I did this by pulling on the ignition switch and it eventually came forward enough for me to unplug it. There are two clips on the sides of the harness which need to be depressed and it will slide out.

Once the switch has been removed, insert a flat head screwdriver and turn the "switch" two clicks. You'll know you're in the right spot because if you tried to turn the switch any more, you'll get more resistance b/c you'd be "starting" the car. IF YOU do go too far, and hit the spring back mechanism, click the switch entirely off, and then try for two clicks again. The two clicks represent the "Run" position of the car.

Part Six: Wiring the Toggle
Now you ready to eliminate the key completely and replace it with your toggle switch. Start by cutting the red wire going to the ignition switch. I clipped mine within 2 or 3 inches of the actual switch. Once cut, attach a length of 10 gauge primary wire (I'd use red) to each end that you cut. Both of these wires need to reach the location of your toggle, so keep that in mind when it comes to getting enough wire. You can attach the wires anyway you want, but I suggest some form of connector. Run the wires to where you want to put your switch - I used the dummy plastic piece for where the power window switch would be if I had rear windows.

Attach the wires to your switch - I used a 50 amp toggle switch. El Pres. recommended this - he said at least 30 amp, but preferably 50 amp, so I felt better safe than sorry. Now plug the ignition switch back into the harness. MAKE sure the toggle switch is in the "off" position when you do this. Now, test your toggle switch. Turn it to the on position - your dash lights should come and your car will be just like it is in the "Run" position.
Attached Thumbnails
Click image for larger version

Name:	ignition.JPG
Views:	2131
Size:	70.0 KB
ID:	13550   Click image for larger version

Name:	ignition2.JPG
Views:	3416
Size:	65.9 KB
ID:	13551   Click image for larger version

Name:	toggle1.JPG
Views:	2447
Size:	61.6 KB
ID:	13552   Click image for larger version

Name:	toggle2.JPG
Views:	3594
Size:	104.8 KB
ID:	13553  

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#3 (permalink) Old 07-13-2004, 09:26 PM
n00b
 
Join Date: Jul 2004
Location: Dallas, TX
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BMWBoi is an unknown quantity at this point
Send a message via AIM to BMWBoi
would it be possible to tap in a remote starter this way?
BMWBoi is offline  
#4 (permalink) Old 07-13-2004, 09:28 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
I am not familiar with remote starts, so I couldn't answer that.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#5 (permalink) Old 07-13-2004, 09:30 PM
n00b
 
Join Date: Jul 2004
Location: Dallas, TX
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BMWBoi is an unknown quantity at this point
Send a message via AIM to BMWBoi
its a 4 cahnnel 12v control module with passive polarity on it.. do u think if i tried it it would mess up my starter ?
BMWBoi is offline  
#6 (permalink) Old 07-14-2004, 02:16 AM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
I still don't know exactly, as thats not my area, but I do know adding a remote start would require an EWS bypass module. I suggest posting that in the audio/alarm forum, as there more people there who can help you get it installed correctly.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#7 (permalink) Old 07-15-2004, 03:09 PM
3rd Gear Member
 
Q_BMW's Avatar
 
Join Date: Jun 2004
Location: Illinois USA
Posts: 567
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Q_BMW is an unknown quantity at this point
Send a message via AIM to Q_BMW Send a message via MSN to Q_BMW
hey el presidente
thanks a lot
do u still have any more of the switches to get rid off ?
thanks
Q

<span style='font-size:15pt;line-height:100%'><span style='color:red'>JUST SOLD:</span> <span style='color:blue'>01 BMW 330i with Sport &amp; M Package(5sp)</span></span>

<span style='font-size:14pt;line-height:100%'><span style='color:blue'>Past:</span> <span style='color:red'>1996 BMW 328i</span></span>


<span style='font-size:14pt;line-height:100%'><a href='http://www.ofoto.com/BrowsePhotos.jsp?&collid=10038932107&page=1&sort_o rder=0' target='_blank'>PICTURES!!</a></span>
Q_BMW is offline  
#8 (permalink) Old 07-15-2004, 05:09 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
I can whip a whole kit for you no prob, and have it sent out in a day or so. If you just need a switch you can get them at just about any hardware store or radio shack.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#9 (permalink) Old 07-17-2004, 04:03 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
Just an update: I recently purchased some relays in bulk, so the cost per kit is down to $20!

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#10 (permalink) Old 07-17-2004, 05:13 PM
Neutral Member
 
Join Date: Jun 2004
Posts: 75
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
kassper is an unknown quantity at this point
What does the kit come with? Everything you need? Thanks
kassper is offline  
#11 (permalink) Old 07-17-2004, 06:28 PM
Neutral Member
 
Dsking85's Avatar
 
Join Date: Apr 2004
Posts: 92
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dsking85 is an unknown quantity at this point
can u explain this in simple man's terms? i have a 94 325is that i would wanna do this to. if i do it the first way, how can i start it and how can't i start it? i want to make it so i have to have the key in the ignition and just push the button. i don't want there to be any way to start the car w/o the key. is that possible?

<img src='http://img78.photobucket.com/albums/v349/Dsking85/siggy2small.jpg' border='0' alt='user posted image' />
Dsking85 is offline  
#12 (permalink) Old 07-17-2004, 06:48 PM
Defector
 
El Presidente's Avatar
 
Join Date: Dec 2002
Location: Long Island
Posts: 5,973
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
El Presidente is an unknown quantity at this point
Send a message via AIM to El Presidente
(Thread Starter)
kassper: My kit will come with everything needed to complete the installation. The relay will be pre-wired and the exposed ends of the wires will simply need to be attached to spliced into the ignition and starter wires. The button will come premounted in an expansion slot, so you won't have to do any modifying to the factory slot, and can reverse the whole procedure if you decide to sell the car and don't want it then. The wires coming from the button will include a spade connector to connect to the relay and a wire tap to splice into the accessory ground.

For now, I am offering a choice of buttons. Any momentary press switch carried by Radio Shack online will be available to me loclally for pick-up, or I can pick one out for you.

Dsking85: The only way to start the car without the key is by completing step 5 and 6. With just the button, the key must be in the ignition and turned to "Run". Without the key, it cannot start.

<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
El Presidente is offline  
#13 (permalink) Old 07-18-2004, 05:16 AM
1st Gear Member
 
TeeUp's Avatar
 
Join Date: Apr 2004
Location: Sacramento, CA
Posts: 288
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
TeeUp is an unknown quantity at this point
neat idea prez,,,,
TeeUp is offline  
#14 (permalink) Old 07-18-2004, 11:23 PM
3rd Gear Member
 
Q_BMW's Avatar
 
Join Date: Jun 2004
Location: Illinois USA
Posts: 567
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Q_BMW is an unknown quantity at this point
Send a message via AIM to Q_BMW Send a message via MSN to Q_BMW
hey el presidente
my lock cylinder is on the way to get frozen so i was wondering if your kit
would let me setup the steps 5 and 6 as well ? I cannot setup the switch like bpowers did cuz i have a 4 door with 4 window switches....but i would like to set it up somewhere discrete...below seat or somethin (tap it with the leg?) so no can easily figure out how to start it...lol
lemme know thanks
Q

<span style='font-size:15pt;line-height:100%'><span style='color:red'>JUST SOLD:</span> <span style='color:blue'>01 BMW 330i with Sport &amp; M Package(5sp)</span></span>

<span style='font-size:14pt;line-height:100%'><span style='color:blue'>Past:</span> <span style='color:red'>1996 BMW 328i</span></span>


<span style='font-size:14pt;line-height:100%'><a href='http://www.ofoto.com/BrowsePhotos.jsp?&collid=10038932107&page=1&sort_o rder=0' target='_blank'>PICTURES!!</a></span>
Q_BMW is offline  
#15 (permalink) Old 07-18-2004, 11:40 PM
3rd Gear Member
 
Turbodefrost's Avatar
 
Join Date: May 2004
Location: Bellingham, Washington. USA
Posts: 616
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Turbodefrost is an unknown quantity at this point
Send a message via AIM to Turbodefrost
That is badass. Nice work Prez.

-damn, driving through chicago tonight, two guys just flew past me on a crotch rocket going 160mph+. Sweet.

Turbodefrost is offline  
Sponsored Links
Advertisement
 
Closed Thread

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Push Start Button mmzcee 3-Series (E36) 5 02-22-2005 02:27 PM
push start with total keyless option Q_BMW 3-Series (E36) 17 08-01-2004 08:28 PM
PUSH START DIY Q_BMW 3-Series (E36) 6 07-08-2004 07:42 PM
Push Button Ignition red325is 3-Series (E21, E30) 3 03-15-2004 08:13 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome