viper 550 esp, 1996 bmw z3
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=86779
Printed Date: May 13, 2025 at 4:09 AM
Topic: viper 550 esp, 1996 bmw z3
Posted By: dexinefx
Subject: viper 550 esp, 1996 bmw z3
Date Posted: December 07, 2006 at 11:38 AM
hi guys, i'm trying to install a viper 550 esp in bmw z3 1996 but have a few questions...... do relays need to used to have the power door locks work??? it has factory door locks... it'll loc and unlock using key in drivers door...i've always thought cars w/ built in power doors didn't need relays just those with aftermarket actuators....any help would be great...thanks...not using the remote start portion of the 550 just the alarm...thanks..
Replies:
Posted By: dexinefx
Date Posted: December 13, 2006 at 3:40 AM
just installed a viper 550 into 96 bmw z3...hooked up door lock/unlock straight to wires in plug since viper supports positive locking..problem is the drivers door won't lock/unlock all the time...passenger and trunk work fine just the drivers not working right...any help would be much appreciated...do i need to do relays or use diodes for the double lock???thanks.
Posted By: KarTuneMan
Date Posted: December 13, 2006 at 9:08 AM
Did you not use relays.....Does the Viper have built in lock relays...I don't believe it does. And I thought the output was NEG(-).....?
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Posted By: dexinefx
Date Posted: December 14, 2006 at 2:15 AM
550 esp says it does the positive door locking so i didn't use relays...any professionals out there to help a noob out...
Posted By: gearbo
Date Posted: December 14, 2006 at 2:38 AM
dexinefx wrote:
just installed a viper 550 into 96 bmw z3...hooked up door lock/unlock straight to wires in plug since viper supports positive locking..problem is the drivers door won't lock/unlock all the time...passenger and trunk work fine just the drivers not working right...any help would be much appreciated...do i need to do relays or use diodes for the double lock???thanks.
Have you tried using the double pulse for lock/unlock? I had the same issue with another brand where doors wouldn't always unlock. Double pulse fixed the problem.
Posted By: maxcrx
Date Posted: December 14, 2006 at 1:34 PM
how do you hook up a double pulse...thanks...also would the double pulse only need to be for the lock since the unlock portion has no problems...thank.s
Posted By: gearbo
Date Posted: December 14, 2006 at 2:37 PM
On the Viper 550 ESP you need to use the Learn Routine and work in the second menu. https://www.directechs.com/guides/manuals/ig/viper/N553V.pdf
Posted By: maxcrx
Date Posted: December 14, 2006 at 4:33 PM
do i need to set the pulse from .8 sec to the 3. sec. only or do i have to change the unlock from 1 pulse to 2 pulse thanks.
Posted By: gearbo
Date Posted: December 14, 2006 at 5:42 PM
Only need double pulse on the unlock (if single doesn't always work). If you're having trouble with the lock, I'd try the 3.5 second pulse for the lock. If that doesn't fix the lock issue, start checking grounds, wire connections, etc.
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