99 camry

I installed a remote starter w/door lock & unlock. Everything works well except the unlock feature sometimes it works most of the times it does not. I checked the connections and all very good. Is it possible the system is not providing enough power to unlock the doors. Pls help, thank you all

hmm.. your car might not have the amparage the actuators need...so try unlock with the car running...if they work, you probably need a new battery...if not...your actuators might be in a location were there is too much resistance and they cannot push the lock, so try a different location, or bigger actuators.

The battery is less than one year old. All other functions work fine, hornchirp, lights, lock works fine with no problem at all. Any body has an idea pls. Thank you all

What did you use for the lock/unlock wires? Color and location? (In the car....I know what ones you used on the alarm)

As I explanined earlier, the wiring is ok.Everything works fine all the time even the lock. The problem is in the unlock only. Sometimes it works, most of the times it does not. Could be not enough amps to triger the unlock. How can I boost the signal if that is the case. TRhanks to all who could help.

did you wire in the blue/res child lock safety wire it's the same harness as the unlock wire after a few minutes you cannot unlock the doors unless this wire also see's a negative pulse you can use the same unlock trigger your using just use 2 diodes to isolate them from each other

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Jay

The info on this sites says the unlock requires a double pulse. Is that option set in the alarm?

If yes then it's got to be the info from Jay.

Double Pulse Unlock
Owners Manual
DEI Pulse Timer if Alarm Does Not Support

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I like cars more than women, because their the perfect challenge.
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There is a reason I asked which wires you used...but you still didn't answer me. If you use the wires that test with the switch on the door, the unlock function won't work after a few minutes. You need to use the wires that test with the key in the passenger door. They don't "fall asleep". No double pulse unlock needed, no child safety lock wire needed either.

Power Lock      dk. blue/white        -       org plug bottom of fusebox
Power Unlock      dk. blue        -       org plug bottom of fusebox
Notes: The lock wires are about 18 gauge. They will test only by operating the key in the passenger door lock cylinder, not the rocker switch on the door itself.

Thank you all for trying to help. Jay, I will check your suggestion tonight. But if I have the wrong wire for unlocking the car, why does it work sometimes? Yes I follwed the wiring diagram from this web site and tested the wires from the door switch(driver side). Thanks again.

It shuts off after a few minutes. Let me know how it turns out.

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Jay

zmsaad, Jworm's answer is totally correct. You asked why, so I'll explain. If you do a few simple tests, you will see how the car's system works.

Also, the issue with Toyotas is not a function of time---nothing happens "after a few minutes"----depending on how you exit and lock your car, the problem either happens or it doesn't.

First, roll down your passenger window, and insert your key in the passenger door and leave it there. Then try these things and observe what happens.

1. Close the door. Reach in through the window and lock the doors with the power lock switch. You will observe that you can unlock them again with the switch whenever you want.

2. Open the door. While the door is still open, lock the doors using the power lock switch. Then close the door. Reach inside the window and try to operate the unlock switch----it will not work.

3. Close the door. Use the key (not the switch) to lock all the doors. Reach in the window and try to unlock the doors with the switch----it won't work, just like #2 above.

4. Lock the car using either #2 or #3 above----the unlock switch inside the car will not work at this point. Now, reach in the window and move the mechanical lever that unlocks ONLY that one door. Then try the power unlock switch---you will see that it works now.

Hopefully what I'm saying makes sense, and you are closer to understanding why your car only unlocks sometimes. I'll explain further.

---Refer to #1 above. If you close your door first, and lock the car with your aftermarket remote, the unlock function will work 100% next time you want to get in.

---Refer to #2 and #3 above. If you lock your doors before closing them, or lock them with the key, your aftermarket remote will fail to unlock the doors next time.

---Refer to #4 above. There is a wire coming off the doorlock lever, which is called the Unlock Detection wire. People often call it the "child safety" wire, but that term is incorrect, and the wire has nothing to do with the safety of children.

At any rate, if you ground the unlock-detection wire and the unlock-switch wire at the same time, the doors will unlock 100%. But this method is a big time-waster in my opinion---don't bother using it.

So this brings us back to the answer to your original question, and the reasoning behind it:

The wires connected to the key cylinder in the door work 100% of the time, with just two simple connections, and with no extra parts.

Furthermore, when you lock the doors using your aftermarket remotes, the unlocking switch inside the car is disabled, just like Toyota intended it to be.

As an added bonus, when you unlock the car using the proper wires, the domelight will come on too.

Well, I do'nt know what to say. Thank you all for the help, and yes I did what Jworm suggested and it worked with no problems at all. The double pulse did not work. I rewired the unlock as suggested by Jworm and it works great. Thank you all for your help. You rock