Hi guys,
The weather has been pretty hot here. I saw 106 degrees today while driving. It's been so hot that the XEDE's overtemp protection has being triggered in a few instances. You'll know this is happening if your car starts to hiccup while you drive. If this happens, look at the LED status light. It will start to flicker red. We can fix this but it will require sending it back to us. All we need to do is solder jump two links together. Takes about 10 seconds.

Historically, we've only had to do this with XEDEs that we mount in the engine bay (Elise, Porsche and new Miata applications, for instance). But for some reason, we are seeing the overtemp relay being triggered in a few cockpit-mounted XEDEs. If this is happening, don't fret. Just unplug the harness and send the XEDE to us. We'll take care of it and send it back to you (if not the same day, certainly the next). There is no side effect to eliminating this "protection" feature as we have tested the XEDE to operate, trouble-free in 150F conditions.

Sorry for the inconvenience,
Shiv

Sorry for the inconvience.

 

What actually is magic temp limit? You guys must be seeing _really_ high cabin temps to trip it, as I've not had a problem even out here in the desert.

d

 

Hey Shiv,


I think this happened to me the same evening after you tuned my car on Thursday night. It only happened once, but kinda freaked me out. Should I just bring the car into your shop for you to take a look at?

 

Absolutely.. when you come back for the race gas map, I can have Dustin solder up that link in no time flat. There's no potential for harm if that protection were to trigger... just random hiccups. If he happens again and you don't want to wait, come on by anytime.

-shiv

 

If we send our XEDE to you and we have an original outdated harness are you going to upgrade the entire thing? I have a fairly old XEDE and I believe some enhancements have been made since I took delivery of mine.

 

yeah mine has been doing this for months, but i don't think it was hot when it was happening to mine... It's been doing it since February... I called twice and no one could diagnose the problem... Or call me back after they said they would see if anyone else knew about this... :-/ Anyways, I'm glad you guys have figured out what it is.. I'm going to send mine back...

 

yeah this happened to me like 5 hours from home... i didnt know about this when it happened. the light was flashing red amber green and it was like a really hard misfire. sent it to dustin and he took real good care of it and i have had a problem since.

 

...I hope you mean have had no problem since


BTW what causes the XEDE to flash red, amber(orange), green; then go off line and flash amber? ...it is not a trick question.

 

I had this happen to a friends car and it was in the low 90's, mine has never done it even with cabin temps in the 140's (car left in the sun during summer in Houston).

 

This was happening to my car today. Outside temperature is only 88. Odd part about the hiccup was watching the tach -- it went all over the place. Would jump up a couple hundred rpm and right back down the whole time.

What exactly triggers this protection -- is this the physical heat of the unit? Or is this what the ecu is seeing and Xede doesn't like it?

 

Shiv,

I think I am getting this with my Xede as well. Here is what happened to me on Sunday and Monday. I usually park my car under a tent in my driveway. On Sunday I visited a friend and parked in the sun. It was hot. I start the car and the car does not idle properly. The AFR swings from 14.7 stoich to 12 AFR as the idle goes up. Then when driving the car sputters and give popping noises from the exhaust. So I stop the car and kill the ignition, wait for a number of seconds and start it again and it goes off. I did not check the light on the Xede.

Today I go back to teaching for the summer. I park in the sun from 9:45 to 2:00 pm. When I start the car and begin to drive the same thing happens. The car stutters, the exhaust pops and the AFR swings from Stoich to 12. I do the same thing as yesterday, but this time I get an engine code P0102 which is inadequate MAF input. Then the car runs fine.

I cleared the code and drove the car this evening and it seems fine.

Is this similar to what others are experiencing? Does Alfred at Tuning Tech know about the fix? I would rather having fix it for me since you guy are far from me. It is much faster and there is less down time for me.

Please advise me on what to do.

 

Well the first thing I would do is buy one of those Sun-shades for your windshield. Those greatly reduce the ambient temperature inside the cabin. I've done that the past two days and that has helped my issue .

What I would like as well, is a diagram of what needs to be soldered in the Xede.

 

Shiv??

 

OK,

I checked the light on my Xede and it is flashing red. My Xede is not working. How do I reset the thing?

I tired to upload a map and burn it. It did that, but the Xede is still flahing red.

I need help PLEASE. I have no idea what to do next.

 

Try reloading the firmware and the maps, and see if that fixes your issue. If it does not, send it in so I can do the overtemp mod.