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Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Tue Jan 02, 2024 8:33 am
by Crofty1994
Tried my Ecu on 3 others cars now and can't figure out why it won't work. It's going on my 2000 ek coupe kswap project but for the life of me I can't get it to work. Bought the unit second hand and watched it working but now it's decided not to.
Checked grounds and plugs several times to no avail. Any advice would be much welcomed as I don't know what else to do.
Ecu info attached, once plugged it the ecu flashes green then immediately red and won't allow any calibrations to be access and doesn't prime fuel pump or anything else.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Tue Jan 02, 2024 10:14 am
by Spunkster
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 9:19 am
by Crofty1994
Thank you very much for that I've just updated the software to the latest version and still the same outcome. The esu light starts green then immediately flashes red. The information like the serial and things is coming up but nothing can be uploaded or unloaded and the car can't be started.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 9:19 am
by Crofty1994
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 9:33 am
by Crofty1994
Could my issue be because its "read protected" because it won't let me change this either.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 10:03 am
by Spunkster
Go to the online, Tools menu and erase the ECU, then when that finishes, open a calibration and try to upload it to the ECU.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 10:57 am
by Crofty1994
Spunkster wrote: Wed Jan 03, 2024 10:03 am
Go to the online, Tools menu and erase the ECU, then when that finishes, open a calibration and try to upload it to the ECU.
Unfortunately it won't let me does this as its all grey'd out.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 3:01 pm
by Spunkster
If the ECU will not show inline in multiple vehicles, then it sounds like the ECU is most likely damaged. Do you have a spare ECU?
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 3:48 pm
by Crofty1994
I don't have a spare ecu but potentially get hold of one do you think if I put this kpro in another ecu this may fix my issue?
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Wed Jan 03, 2024 5:09 pm
by Spunkster
If the ECU is damaged then yes.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Thu Jan 04, 2024 1:06 am
by Crofty1994
Spunkster wrote: Wed Jan 03, 2024 5:09 pm
If the ECU is damaged then yes.
I can't see any issue with the ecu I've visually inspected it and the fact It used to work before being removed is rather confusing. Could this not be a software bug where this read protect is causing this issue?
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Thu Jan 04, 2024 9:57 am
by Spunkster
If it cannot clear security you need to try the K-Pro board form your ECU on a different ECU to see if it is the ECU or the K-pro.
Re: Kpro v4 Flashing red, can't upload anything to it and shows ignition off.
Posted: Mon Sep 29, 2025 3:14 pm
by k20kellyR
Crofty1994 wrote: Wed Jan 03, 2024 10:57 am
Spunkster wrote: Wed Jan 03, 2024 10:03 am
Go to the online, Tools menu and erase the ECU, then when that finishes, open a calibration and try to upload it to the ECU.
Unfortunately it won't let me does this as its all grey'd out.
Did you ever figure this issue out? I’m currently experiencing the same exact thing on my k20z1 swapped ek hatch with kpro v4. I was litterally driving normally and the car just shut off on me and I noticed the ECU wasn’t flashing when I turned ign on and then when I got it back to the house it’s doing the exact same thing when I plug it up to the software.