ultrastart trunk pop problems

Ok. Ive done about 20 ultrastarts so far and have been having 2 problems reoccuring.

The first problem happens when you remote start the vehicle the trunk pops open. It happens every single time you start the vehicle up with the ultrastart remote.

The second problem happens 1 out of 10 times. When you start the vehicle the trunk will pop and then it will continue to pop over and over and over again. But it only happens sometimes not every single time.... I know there is an output that you can change on the unit that will make the trunk output turn into a parking light ouput, but if this were the case then the trunk would pop open every single time you remote started it......

I have left about 3 messages on ultrastart's answering machine..... but I am guessing they don't ever check the answering machine because I have not had a call back.

The trunk output is a negative output, and the vehicle required a negative output. We didn't use any relays. This has happened on 3 cars so far. All 3 required a negative trunk output. And like I said the trunk output works perfect, its just sometimes it does the above things...

All the ultrastarts were the 2 way LCD screen version.

OK, here is a tip for you.  I recomend you to try it.

I am pretty sure on your instalation you use several relays like one for < face=Arial,Bold color=#1f1a17 >Anti-Grind, another for Starter Kill, etc, etc ............Do does external relays has a diode between the coil terminals 86 and 85 ?  I have seen a lot of relay sockets that does not come with this diode.

< face=Arial,Bold color=#1f1a17 >What I think is happening is that does relays you are using does not have a spike diode protector, and when the relays get deenergize they are sending a spike to the alarm brain and causing the malfultion you have with your trunk.

Try it and please let us know

Good luck,

Isaac

< face=Arial,Bold color=#1f1a17 > 

In the 3 cases that we had major problems there was no relay used, the we used the autostart to control the second ignition wire.... 2 cars were GM's with negative trunk release output. The other was a grand cherokee with a negative hatch release. So in these 3 cases we didn't use relays... Very good point though, had we used relays it would have been worth checking into.