This morning, I drove 45 miles, then stopped for coffee. SGII was monioring ECT, EOT FMP and VLT. I got back in the truck and switched the FMP to IPR and it was blank. No numbers. Scrolled thru and noticed many more also blank. Unplugged from OBDII andI plugged in again. still blank. All pids that I programmed are blank including EOT that was working until I switched pids. Any ideas?

 

Ouch! Sounds like it had a brain cramp. Might be a problem with the unit.

 

if you can reset the SGII

I get that if If I let the SGII power On First before I start Truck

If I start truck and let it start on own works Great IDK why

 

lol@reset.... Geez. I don't want to program all the xgauges again.

 

This happened to me a few months ago, I unplugged it and left it that way for a half hour then plugged it back in. It worked fine after that. I too didn't want to reprogram mine but that's where I was headed if it didn't work.

 

Happens to me often when I plug/unplug it. Try plugging it in with key off and letting it go to sleep before you try starting the truck.

 

That was the 'idea' that I had too. It's unplugged since I got to work. I'll check it again at lunch. I wasn't thinking it was going to work though, because I assumed it had a battery backup that allows it to store the programmed xgauges. Fingers crossed it works like yours did! lol

Thanks, I'll try that too.

 

Went out at lunch time and plugged it back in and BAM! They all work!

 

Sweet, I'm glad it worked for you. Also glad that I'm not the only one its happen to

 

Yeah mine does it all the time, sometimes they just randomly go blank

 

I have found from time to time mine will lock up
and if you unplug it and plug back in you have --
for the displayed numbers. Shut the truck off
let the SGII go to sleep on it's own and restart.

Problem gone.

Sean

 

Its been awhile but I don't think you Loose X-Gauges with reset

All I ever Lost was the MPG Info from the Reset

Hope Im not getting it confussed with switching SGII from Car to Car

 

Mine has done this about 3 times over the past 8 months. For me, turning the truck off and restarting brought it back to life. Apparently it is common?

 

Me too. I woke up sg2, and was entered new xcodes, turned key on with sg2 awake and it could not display anything. Turned key off, let sg2 go to sleep, turned key on and started engine, i woke up sg2, all happy again.

I suspect, having the odb2 bus go active with the sg2 awake gets the bus interface out of sync and the sg2 can't recover without restarting.

Did you ever wonder what signals the sg2 to "wake up" on it's own once engine is running?

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