Viper 5902 Draining Battery

So i installed a Viper 5902 unit on my 2008 Nissan Titan and it works great, minus a few things.

1. The brain doesn't seem to be outputting a + signal in the Parking Light output wire (H1/11 White). It was connected to the RED / BLUE wire of the Electric Brake Pre-Wire Harness. I also set the internal light flash fuse on the brain to flash with a + output. The parking lights never flash during arming, disarming or alarm activation. I have tested the wire and i cannot get any voltage from it.

2. The blue LED light on the antenna/valet unit is stuck solid. It is not in valet mode. I can turn valet mode on and off using my 2-way remote and there is no change in the light. The only way i can make the light go out is if i put the system IN valet mode using the 1 way remote pressing the f button twice and then the unlock button. Onece i take it OUT of valet mode doing the same procedure with the 1-way remote the light turns solid blue again. Its almost like its working in reverse.

3. The alarm seems to be draining my battery very fast. And i cannot figure out why. I have checked and triple checked all my connections, grounds, ignition wires and nothing looks out of place. The brain never gets hot. I can disconnect all the plugs from the alarm except the main remote start harness that goes to the ignition and it wont drain the battery. But the second i connect all the other plugs to the alarm and i arm the car, within a few hours the battery is dead. The battery is less than two months old so i don't think its bad.

Besides that the car remote starts perfect and arms/disarms fine and the alarm goes off like it should should i open a door or bang on the side of the car. I'm beginning to think that something might be wrong with the brain.

Thanks for taking the time to read through all this, im kind of stuck on this thing and could use some feedback on to what it could be.

1) Is there an internal fuse for the white wire or has a jumper worked loose or been displaced.
2) Can't help you here.
3) The 5901 won't draw enough juice to drain your battery, even armed it's rarely drawing more than 30 milliamps. Disconnect it and see if your battery still drains.
Before the above, recharge the battery and use a meter to check the voltages at the ground and all the constant 12v+ inputs, should read 12.4 or above.
5902 is generally very reliable. Nots the 5901 and earlier 5902 models.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Where do you have the unit grounded and how is it grounded? Also try pulling all of the power fuses on the unit to help possibly reset it if it somehow got into some other mode besides valet.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

I had opened up the unit to check for blown fuses but there were none present. Only about 4 relays which looked fine as far as i could tell. The wire itself seemed like it was not loose or anything.

Last night i went ahead and re-did my ground connections. I originally had the brain, ads bypass, and the H2/18 BLACK/ white neutral safety switch wire all grounded together and crimped to a ring terminal and secured to the car in a spot i drilled and tapped. What i did different was ground the brain in its own separate ground, and the ads bypass and the H2/18 together but in their own ground spot separate from the brain. The Viper installation guide said its best to ground all your components together so that was to only reason i had them together in the first place. I also disconnected the H1/11 parking light output wire. I got up this morning and the truck fired right up with no signs of battery drainage.

The stupid blue led valet light is still solid and bright as ever though lol. To me that is more annoying than anything else and need help figuring out why its like that!

Thanks for your help guys.

As a point of procedure, NEVER drill and tap for a ground, self taps work loose! Use an existing factory bolt, usually 10mm spanner size, undo the bolt, scrape to bare metal and use one more M6 ring terminals under the bolt.
I usually ground everything together for convenience without problems.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

What I usually do if I have multiple items needing a ground is I'll take a larger gauge wire (usually 12 if I can) and connect all the grounds to that right at the brain. That way its only 1 wire I have to run down to the kickpanel and ground. And +1 to what Howie said, always use a factory bolt if possible. If you have to drill/tap make sure to use a star washer on either side of the ring terminal.. it will help to bit into the metal and the screw and keep it all tight.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Yellow ring terminals! No actually I heartily agree with Kenny about combining the grounding wires.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

It just makes things much easier since you then only have one wire to run, and you don't have to worry about missing one and spending hours trying to find the problem. And it can be done during the prep so it saves some neck/back pain.. lol

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

I concur 100%, having just done some work, having a nice cup of tea and two muscle relaxants!!

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

I installed a star washer and its a pretty secure connection. But im going to have to keep an eye on it now that you guys mentioned that drill and taps can come loose.

Any ideas on the Valet Blue LED staying on all the time? Is there any other reason the light stays on besides being in valet mode? Could a wrong wire connection cause it? The funny thing about it is that if i unplug the H1 harness from the brain which supplies it 12v the LED stays on. Its not until i disconnect the ground that it turns off? Could it be a bad antenna? I can program through it and use it for all its intended functions but the stinking LED just wont go away.

Dumb question, but have you tried cycling through lock and unlock a few times to see if it goes away? Also try pressing the program button with the car off and see what happens. I would assume its stuck in some sort of "mode" but I really can't say for sure.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Yeah Ive tried several lock/unlock button combos that i have found online with no success. Do you guys think it could be related to the security light connections i made in the idatalink bypass module? I cant imagine i screwed something up there as it was a simple wire to find and i cut it and connected it to the designated wires in the ads unit. I will have to double check.

That is normally just so that the factory security light doesn't light up. it shouldn't have anything to do with the LED on the antenna.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

This is for the older units but maybe it will work with yours. Turn the ignition on and then press the command button, then turn the key off again and see if that works. No promises, but its worth a shot.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Also try opening the door then pressing Unlock, Lock, Unlock. It really sounds like its in Valet mode... but I know you said you've tried that...

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

I've tried so many different button combos that im pretty sure ive done those lol, they sound familiar. But i will try them again just to make sure and report back.

Another source I found says to open the door and do Lock, Unlock, Lock, Unlock, Lock... I don't know the exact procedure for the 5902 but anything is worth trying.. lol

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Nothing worked. Stinking light didn't even flinch. Only way it goes off is to actually put it in valet mode. But once you take it out it turns back on solid, the total opposite of what it should be doing.

Another dumb question but are you sure you are putting it into valet mode and not taking it out??? I never use valet mode so I really have no idea if its something that is blatently obvious that it is in valet mode. Past that I'm fresh out of ideas...

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Yeah with the 5902 when its in valet mode and you arm or disarm the vehicle it will beep really loud on the remote and it will display a lock highlighted red and it will say "in valet mode" really big so its pretty obvious lol. Im out of things to try my self, thinking now of a way to just somehow disconnect the LED and kill it. Either that or try a new antenna but they look like they run for $60 on ebay and i dont feel like shedding out the cash right now until i can somehow verify the antenna is faulty.

Do you have a local shop by you that sells DEI? You may get one to help you out and possibly let you test an antenna from one of their stocked units...

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

There are plenty of dealers around here in central Florida but most of them seem like they don't want to help you unless you are a paying customer. No one seems to want to deal with you if you already have an alarm installed that they didn't do themselves. Its funny cause i have found other people with the same problem online and doing the lock,unlock,lock thing seems to have worked for them.

Now just to be sure... you do have either the green (-) door trigger or violet (+) door trigger connected correct? Otherwise the lock, unlock, lock method wouldn't work because its not seeing the door being open

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

I'm not using the H1/6 Violet (+)Door Trigger Input wire because i have the H1/8 Green (-)Door Trigger Input wire connected to the (-) Yellow/Black Door Trigger Output wire of the ADS bypass unit. I know its recognizing open doors because i programmed various features through the antenna/valet button initially and one of the required steps is to have a door open. Also if i arm the alarm with a door open it will tell me i have a door open. The alarm is also triggered if i open any door. I'm telling you man, this one is a pain in the ass lol.

Yea, those last few ideas were just shots in the dark in hopes to get lucky.. lol.

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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205

Another shot in the dark, could the plug be inserted the wrong way round? On earlier versions the white LED plug and the blue valet pin plug could go in each other's slots, been there done that but then the LED glows dimly but constantly.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

In this particular antenna version there is only one plug that goes into the brain, and the other end into the antenna. I cant imagine that plug being able to go in backwards and still operate normal except the LED but i will check on that, you never know!

Yeah went and checked and the plug only goes in one way in both the brain and the antenna so back to square one.

Bump. Im having the same problem with my python 574 (very similar but one year newer and not the color version).... Stays lit even when vehicle is running. I had originally put it into valet mode by mistake, but it came out after disconnecting and reconnecting the battery a few times haha. Any more advice? ive tried all the steps listed in the past posts...