My deck started acting up late yesterday while i was driving down a gravel road so i assumed that something ratteled loose in the wiering. (this wasnt my first time on gravel) I pulled my deck out to check for any loose connections and redid anything that looked out of wack but it never helped. But if I turn my ignetion backwords just to get my deck to just come on i have no problomes. so im figuring that something is overloading or soething to do with a speed value. I was trying to hack my deck using software but that was over two weeks and i never compleated it. I had the deck since feb 19 2009. Any info would be grately appretiated!!!

check your battery, it may be dropping voltage when you are driving. usually them auto parts places will check it free. If that's not it, and you checked all your stereo connections.. maybe alternator? they can test them too.

maby iv noticed that it has been idiling a lil funny like the altonator has been trying to charge by cutting in and out. but my serious radio isnt acting up and its one that just suctioncups to the window, i dont have it hooked up threw the deck.U think it could be software

interesting....

perhaps your ground connection is not as robust as it may need to be .. i would tie a heavy gauge wire to the black ground wire on the unit and run it to ANOTHER (in addition to the ground connection you already have) good metal contact (perhaps on the floor board or the firewall) to achieve better ground...

That i could try... iv been reading about the 900-Bt rebooting and it sounds like very simmilar problomes but to do that reinstaling files is a lil beond me at the moment. Ill have to see if one of my buddies can assist. And also i really dont want to take it back for warrenty bc i dont want a black hole in my dash for half a month. i just wish the damb thing would work. It cant even manage to do what its suppose too!!

The Avic should have a tolerance to operate between voltages of 10 to 14 .. so unless your alternator is crappin' out big time and your voltage is dropping below 10 volts... i doubt your alternator is the problem -- i'd expect other electrical instruments (OEM) to also be malfunctioning in your vehicle as well if this were the case -- frequently manufacturers will implement dash lights to come on in pairs or triplets to indicate a bad alternator (nissan's use check engine, abs, and something else)

Well i have my deck in a ford F-350 disel truck, it has two batteries and i belive a 90 amp altornator or maby bigger. I also have an indash gage that shows any major fluctuation in + - charge. I have a 8gb SD card that is about 90-95% full with songs and movies. Does anyone think that maby thats too much for the system to handel...?

I doubt the fact that your SD card is nearly full is the reason your unit is shutting off...

sounds more like a circuit issue ... ground vs. power input ..

do what ya want .. my advice is up there.

I would go over all connections. All electrical components are desighned to work off of a certain amperage, if one of the connections are slightly off that could be creating enough resistance to prevent the right amount of amps from getting to the unit. You can put a meter on it and read 12, 13, 14 or more VDC but only getting 5amps when the unit might need 8-10amps to work. While you are driving the vibration from the motor and the road might be just enough to wiggle one connection to creat high resistamce and then back to normal. It only take .01 of an inch to creat enough resistance to keep something from working. ggod luck and hope you get it fixed.

I'm having the same issue, 900BT which reboots only when driving. Seems like it only happens if I go over 20 kph. I really don't want to yank it out of the dash... Seems like the exact same issue though, pretty odd coincidence..

Well i have some new diagnosis info to say about my F-90BT. Today I was pissing around with my deck and did some stuff like one guy earlier mentioned about ther beying some sort of voltage fluctuations. I went to the shop and got my batteries tested, and altorrnator looked at. everything was in good working order(so I was told). As for it maby beying a ground issue, I ran a new wire from the dash threw the firewall and down under my truck cab to the flat steel cable that grounds my cab to the frame. I removed the bolt, cleaned boath surfases of the frame and cable with a steel brush and tightend everything snug. Took it for a drive an still the prob arose. So i tried turning the key to just get my deck to come on and worked fine. I then started my truck and let it idle for about 15-20 min while inside listining to music and switching background images. Again no prob. I tried driving very slowly and then noticed that as long as i kept my speed under 22 km/h OR about 16mp/h that it would reset. So i kept drining under that speed for almost two miles, and as long as i remained under that speed everything worked normally as it did before this happen. BUT as soon as i reached or exceeded that speed of 22 km/h OR about 16mp/h my deck would continuously keep resetting untill i slowed down or stopped. So this leads me to belive something intearnly is wrong. Any thoughts....?

hmm... is the VSS wire connected?

perhaps the VSS wire is getting too much current and causing an internal failure?

very strange

00silver, that is the exact issue I'm having as well. I bypassed it for now by disconnecting the gps antenna but have not found any other solution. See my tests in the other reboot thread and maybe we can combine notes to help each other.

From the symptoms, I would suspect a failing ignition switch or master relay, especially if it is beginning to fluctuate at idle.

The issue goes away when the gps antenna is disconnected so I really think it's a problem with the avic not the car. (at least in my case.)

If it does it at 16kph every time it is related to the bypass. Did you do a hardware bypass or the software one? Is the parking brake wire grounded?

My parking break wire is grounded and I did a software bypass, which has worked 100% fine until now. The first time the error occured I DID get a parking break not connected properly error right before it rebooted, however that has not come up since. I've also checked to make sure the wire is still grounded correctly.

What I really want to try is uploading a complete backup of a factory 900, but I can't seem to locate the files here.

Hey pp.sorry i never replied for awhile i went camping and wasn't near a computer. Anyways i was reading about what everyone was talking about on my phone when i was in the bush (i was abe to read posts but unable to reply) and noted what weponofchoice said about unpluging the GPS antena. I did that and my deck worked fine absoloutly nothing wrong. I drove home with not a prob and still havent had my deck do anything stupid except for having no nav. So i called the place where i purchased the unit from and explained to the guy what was going on and im taking it tomorrow for someone to take a look at. So hopefully someone will fix this isssue bc its still under warenty. And if they figure something out or fix it ill be sure to tell the avic411 pp what the prob was or what was causing this situation so we can try and prevent this from happining to other pp....! A lil note i might add, when i was talking to this dude he said something aboun them not beying able to get a deck to replace it bc it looked like there is a recall on the 90-BT. (maby due to this wierd prob)

Well good to know we have the same problem for sure. Let me know here how that turns out because if they fix the issue it should be the same solution for mine. Hopefully it's nothing major like having to replace the unit.

I am having the exact same problem....just started a few days ago...

Has anyone tried re-installing new software?

I have a F90BT and have been getting similar issue. The rebooting was coupled with a error message on the screen that mentioned a 'Fatal Application Error' with the application ezrider. Ezrider is part of the navigation software. I had to pull mine out and send back to Pioneer to get a complete reflash.

I am not as savy with the hacking stuff so I didnt want to try modifying anything myself. Some have said they made some changes to the files on the unit and had anything from a complete fix to something that got them working temporarily only to have the issue come up again a week or so later.

I should get mine back tomorrow or Thursday. We'll see how it goes.

Hey pp.sorry i never replied for awhile i went camping and wasn't near a computer. Anyways i was reading about what everyone was talking about on my phone when i was in the bush (i was abe to read posts but unable to reply) and noted what weponofchoice said about unpluging the GPS antena. I did that and my deck worked fine absoloutly nothing wrong. I drove home with not a prob and still havent had my deck do anything stupid except for having no nav. So i called the place where i purchased the unit from and explained to the guy what was going on and im taking it tomorrow for someone to take a look at. So hopefully someone will fix this isssue bc its still under warenty. And if they figure something out or fix it ill be sure to tell the avic411 pp what the prob was or what was causing this situation so we can try and prevent this from happining to other pp....! A lil note i might add, when i was talking to this dude he said something aboun them not beying able to get a deck to replace it bc it looked like there is a recall on the 90-BT. (maby due to this wierd prob)

Have you been able to resolve this?

how many of you that are haveing this problem used the software bypass

have any one tried changeing to the hardware bypass to see what happens

Hello everyone. I wanted to chime in with my own experience. I recently purchased a used 900bt for $60. My unit did not come with a GPS antenna.I installed/tested it,it works perfect besides not having GPS.I recently got the GPS antenna, installed it and tested it in my driveway and it worked perfect, until I decided on a road test. I got the same results as others here(random reboots) After searching I did the GPS file deletetion and now it works perfect. I suggest before tearing the unit out of the dash for repairs is to atleast try the file deletions first.I suspect the 1st owner sold it cheap because he too thought the unit faulty. I'm very happy with my unit,especially for the price. Goodluck! BTW, my unit has the hardware bypass.

Hey guys. I haven't been here in quite a while. I had finally gotten my F90BT modded just the way I wanted and was loving life. Until recently. I am now having this exact problem here. A couple of weeks ago, while on a 6 hour drive, my Avic started rebooting continually for no apparent reason. I have found that while sitting still or moving very slowly it works beautifully. As soon as I start actually driving it reboots. It actually scared the sh*t out of me the other day when I pulled up to a long red light. The unit actually booted while I was sitting there and started blasting some Zepplin that I was listening to the last time I washed the car. This is definitely not a voltage or wiring issue. All my connections are soldiered and shrink wrapped and testing shows a solid 13.4v.

Before I reload my entire flash disc, what is the gps file deletion I see mentioned here? Exactly which files are you referring to?

Thanks,

Dino