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Cannot re-program old keys on new ECU

Posted: Sun Sep 08, 2019 12:50 pm
by b2gallant
I replaced the ECU (PCM) in my 2001 Sable. The ECU was programmed with the Sable's VIN number by the company I bought it from, however, my original keys do not work. I tried re-programming the keys myself with my LAUNCH X431 V PRO Bi-Directional Scan Tool, but each time I try the tool says it cannot communicate with module. When I bought the tool it said that it is able to program keys.

The tool can communicate with the new ECU to do everything else, so I know the tool does work, it only fails to reprogram the keys.

Does anyone know of a scan tool that can perform this operation (less than $1200)? Or, proven procedure that will allow me to reprogram the keys on this new ECU?

Regards,
Bill

Re: Cannot re-program old keys on new ECU

Posted: Sun Sep 08, 2019 8:58 pm
by Webmaster
Couldn't you tow it to the dealer and pay them for less than $1200? Personally I don't mess with that stuff, it's not worth the risk.

You might want to look into ForSCAN to see if it will do what you want.

Re: Cannot re-program old keys on new ECU

Posted: Sun Sep 08, 2019 11:11 pm
by b2gallant
Thanks for the reply!

Absolutely, I could tow it to the dealer for less. However, I work on my own cars (5 including the kids') and have been aiming to buy a good scan tool. In fact, I bought a scan tool that said it would re-program keys ($800), sent it back because it did not deliver what it claimed it would (could not program the keys).

Hopefully someone will know.

Thanks,
Regards.

Re: Cannot re-program old keys on new ECU

Posted: Fri Sep 13, 2019 10:59 am
by b2gallant
Thanks to all of you who reviewed my issue and offered an opinion.

I could not re-program the ECU with my LAUNCH X431 V PRO Bi-Directional, but I could with the Autel MaxiDAS DS808K, took about 15 minutes. I did like the LAUNCH X431 scan tool, really nice tool, but it just could not do what I wanted it to do.

Regards