Issue with programming new computer

Tiny
ROBERT WILLOCK
  • MEMBER
  • 2006 SAAB 9-7X
  • 4.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I'm working on it for a friend. Computer was bad, ordered a programed new one was programmed for this vehicle VIN, but I can't get it to recognize the key. I have tried to use my OBD2 computer to set it but says the vehicle is not supported for the setting I need to reprogram it. It says there is a self-learn setting that takes 10 minutes, but I can't get it to start.
Sunday, November 14th, 2021 AT 6:47 PM

2 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
It sounds like the fuel enable password has not been learned.

So, I am attaching the 10-minute process that you mentioned for you to review it.

However, it sounds like if this was starting with the old ECM but not this one that the ECM is not getting the message to start the engine, so it thinks it is getting the disable message.

Take a look at the info below.

This sounds like an issue with the new PCM because if you replace it with a new one then you have to program it with all the VIN specific items. However, if you had that pre-programmed then it should pick up the signal. There is no programing for the PCM on the key info. It just gets the signal from the TDM and if it is a good signal then the ECM starts the vehicle. If not then it doesn't.

Was this a used PCM or a rebuilt one that they flashed to your VIN? Either way, I would give them a call and tell them it is not allowing the start and they may have a work around.

Otherwise, where did you buy this? Do you have a link to the site and part number?

See below for this info and let me know what you have.
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Monday, November 15th, 2021 AT 5:59 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,740 POSTS
Hi,

There are two ways you can complete a key recognition relearn. One is using a scan tool and the other doesn't require a scanner. One takes 10 minutes and the other takes 30.

If you look at the attachments below, they provide the directions for both. Take a look through them and let me know if they help.

Take care and let me know the results.

Joe

See pics below. Note: If you are located in Canada, the procedure is different, so let me know if that is the case.
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Monday, November 15th, 2021 AT 6:02 PM

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