HYPERTECH programmed great, then car no start

TPrelude-370z

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Hi,

I programmed my car today with a hypertech unit without issue and it ran great. I decided to update the software because I purchased the unit used. When I went to reprogram my car I inadvertently removed the cable before it was finished. Now the car will not start and when I plug in the unit I get "unit cannot read ecu" or something like that.

Please help asap.

LakeShow

Uh oh, that can't be good at all.

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|2013 Audi S4|Ibis White/Black|S-Tronic P+|
|2013 370z|PearlWhite/Persimmon|Touring/Sport/Nav|F.I. CBE 18" CF|
|Sold|2011 370z|Gun Metallic|Touring/Sport/Nav|

henry0844

you possibly just bricked your ecu. I read threads on the mazdaspeed forums of the same thing happening with the Cobb access ports. people had to get their car reflashed at the dealer, or if that was unsuccessful, get a new ecu. hope that is not the case for u. take it to nissan and hope they will reflash your ecu and it works. it won't be warrantied due to you tampering with the ecu if it needs replacement.

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2010 PW 370 base+sport 6mt
Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z.

cheshirecat

IMO, that ECU is cooked. The best you can do is play dumb with your dealer if you're under warranty.

Otherwise, the part is close to $1k USD before a couple of hours labor to get it actually programmed.

SPOHN

Does any lights come on? Does it read no key? Just want to make sure it's not the steering lock being a 09

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henry0844

^ agreed

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2010 PW 370 base+sport 6mt
Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z.

370Z Purist

I know with UpRev, you can mail the ECU to them and have them put on a stock map/salvage your ECU. I don't know if hypertech does the same (although I'm sure UpRev would love to reflash your ECU for a nice fee).

I'm trying to find information on UpRev but I can't remember where I read that someone was willing to salvage ECUs... so take my information with a grain of salt.

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-Phil

"Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

TPrelude-370z

Yes the lights come on and it reads no key. Please tell me you have my answer

cdoxp800

With UpRev you can recover it yourself. I have been there done that.

Attached Files

Osiris User Guide.pdf (284.7 KB, 18 views)

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2011 Brilliant Silver NISMO 370z. #: 0046.
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efuseakay

Call your dealer and don't mention anything about the Hyoertech. Then proceed to cross your fingers. Good luck.

jpritche

It could be the steering lock failure. Actually, that is exactly what it sounds like.


I would start here. DIY: Replace dreaded steering-lock on 2009s and early 2010s.



P.S. The best thing to do would be to take it to the dealer and not say a word about the hypertech. Then they should be able to tell you if the ecu is bricked. If the ecu is NOT bricked then I would be willing to bet that it is the steering lock.

henry0844

problem is, the dealer can tell if the ecu has been tampered with. so even if he says nothing about the hypertech they will still know that it has been f'ed with. hopefully the ecu can be saved by someone, poor guy is just a victim of an honest mistake.

__________________
2010 PW 370 base+sport 6mt
Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z.

Z_ealot

only problem with what everyone is saying is that OP mentioned he pulled the plug before it was done flashing the ECU, when it comes to any kind of computer with a flash ROM this is a big no no as it will brick the BIOS on the mainboard and the only way to recover it is either to pray you are lucky enough to be able to reflash it somehow or send it in to the manufacturer to have the board reset basically, hopefully in the OP's case he is lucky.

henry0844

^agreed

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2010 PW 370 base+sport 6mt
Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z.

TPrelude-370z

Thanks for the replies and ideas guys.

had the dealer try to reflash the ecm with no luck. They told me I needed a new ecm. 1200$ I will be searching for used one.

I had no intention of lying to the dealership. Just told them what happened and hoped for the best.

Spoke with hypertech customer service. They seemed very thorough and are trying to help me out. We will see how far that goes.

Even trying to get in touch with uprev to see if they can do anything. If you know of anyone selling an ecm please let me know.

Thanks again,
Steve