E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of October's Ride of the Month Challenge!
1 - 18 of 18 Posts

·
Registered
Joined
·
0 Posts
Discussion Starter · #1 ·
I'm getting a compustar alarm (remote paging alarm system) which has a autostart feature. The install dudes say it is "impossible" to install on E46 models b/c the dome light confuses the alarm or something and also b/c of multiplexing or something.. well non of this really makes sense to me and if anyone here has a remote autostart on their alarm could u please tell me how you got it done?! TIA :)
 

·
Thread Hijacker!!!
Joined
·
360 Posts
The only thing i would see it's a problem with the alarm and it's autostart feature is the chip in the key. Dont' sue me if i'm wrong. But I believe that the car wouldnt start unless the chip in the key matches with the car or something to that extent. Now, if you want to install an autostart, you would have to get this one module where you would have to have it installed deep into your dash with one of your spare keys in it. So in a sense, you car will call for the key when you activate the autostart feature and it will "see" there's a matching key with the chip in it. I forgot what the module is called, but maybe some stereo/alarm installers can shed some light in this. I was thinking about putting this into effect in my car.
 

·
Registered
Joined
·
0 Posts
Discussion Starter · #5 ·
jaytee0401 said:
The only thing i would see it's a problem with the alarm and it's autostart feature is the chip in the key. Dont' sue me if i'm wrong. But I believe that the car wouldnt start unless the chip in the key matches with the car or something to that extent. Now, if you want to install an autostart, you would have to get this one module where you would have to have it installed deep into your dash with one of your spare keys in it. So in a sense, you car will call for the key when you activate the autostart feature and it will "see" there's a matching key with the chip in it. I forgot what the module is called, but maybe some stereo/alarm installers can shed some light in this. I was thinking about putting this into effect in my car.
hmmm.. makes sense... would really like someone who has done this to help:eeps:
 

·
Thread Hijacker!!!
Joined
·
360 Posts
My friend who is an alarm/stereo installer did it. But remember, the key needs to be recharged or it'll die. The key you use to start your car now gets charged when you use it. I doubt that module where you put your spare key will charge the key. And you would really have to hide it good inside your dash.
 

·
Registered
Joined
·
577 Posts
back then , a&b sounds try to install the compustar on my car for like 4 days, but guess what no luck...
so i would like to know if anyone can done this in vancouver..
 

·
Registered
Joined
·
784 Posts
When you put a diode in line with something, it means current can only flow one direction....so if he "diode isolates" the dome lights from the alarm, the dome light can't flow power back into the alarm....only the alarm TO the dome light.
 

·
Registered
Joined
·
449 Posts
I'm sure Ron can answer this much better than I can, but I don't think you need to worry about recharging a key or anythign for this. Essentially they pull the chip transponder from a spare key and mount it within the vicinity of the starter switch. The chip transponder should not need any power to "recharge" itself.

Ron - does having the transponder chip installed in the car make it inherently easier to steal? Now that you've basically given the chip to a potential thief, what prevents them from then just hotwiring / powering the ignition and starting the car?

Someone on another thread mentioned that the transponder chip doesn't work that way, and that it would only activate if given a specific signal from the alarm system itself. Is that right?

jaytee0401 said:
My friend who is an alarm/stereo installer did it. But remember, the key needs to be recharged or it'll die. The key you use to start your car now gets charged when you use it. I doubt that module where you put your spare key will charge the key. And you would really have to hide it good inside your dash.
 

·
Registered
Joined
·
81 Posts
jaytee0401 said:
The only thing i would see it's a problem with the alarm and it's autostart feature is the chip in the key. Dont' sue me if i'm wrong. But I believe that the car wouldnt start unless the chip in the key matches with the car or something to that extent. Now, if you want to install an autostart, you would have to get this one module where you would have to have it installed deep into your dash with one of your spare keys in it. So in a sense, you car will call for the key when you activate the autostart feature and it will "see" there's a matching key with the chip in it. I forgot what the module is called, but maybe some stereo/alarm installers can shed some light in this. I was thinking about putting this into effect in my car.
yes, you are correct.........to make the starter works, you have to buy a box=$35 to put the key with the chip in it and hide the box somewhere inside the car(that was what the installer told me).
 

·
Registered
Joined
·
1,011 Posts
Go check out www.autotoys.com

They have a lot of immobilizer bypass units on there. They also have a lot of support information on there, but for customers only. This site should give you some idea of what you need for your car.
 
1 - 18 of 18 Posts
Top