Vectra C 3 Button PCF7946 precode

**Bllinda** · 25th February, 2015, 08:12 AM

Many markets reader.
And this is what can make unlock

**dinson** · 26th February, 2015, 04:34 PM

flip key and non-flip precode data is different. in that start you must know that....

**RFRemotes** · 7th March, 2015, 08:55 PM

I am also interested on unlocking pcf7946 from vectra c AZ60 module and I get eeprom dump from front cpu.
Problem is that after decoding eeprom and get pure data I can't locate isk48 bit key for unlock pcf in crypto mode.
Anyone have solution for this?
Thanks in advance.

**autofan1965** · 7th March, 2015, 09:55 PM

Its crypted. Post dump.

**P&D** · 7th March, 2015, 11:21 PM

Originally Posted by dinson

flip key and non-flip precode data is different. in that start you must know that....

Hi do you have the pre-code for the none flip key please ??

**RFRemotes** · 9th March, 2015, 02:12 PM

Originally Posted by autofan1965

Its crypted. Post dump.

Here is the dump

**Bllinda** · 10th March, 2015, 08:55 AM

Can I help encrypt all damp? Thanks

Originally Posted by autofan1965

Its crypted. Post dump.

**autofan1965** · 10th March, 2015, 10:55 AM

You will complete decrypted dump or crypto, pin and vin will be enough for you?

**Bllinda** · 10th March, 2015, 11:50 AM

Thank you, friend, enough information.

**RFRemotes** · 16th March, 2015, 09:23 PM

I was able to read a locked PCF7946.
However TMCF byte is 96 (Page3: 96 AA 48 54).
This means that pcf is irreversibly locked right ?
Therefore these pcf can not be reused in any way even if we know the ISK key

**MrSporty** · 16th March, 2015, 10:03 PM

It would appear so. The MSB set in that byte locks the ISK.

Apparently someone (an american guy i think, it was posted on here somewhere) had developed a sw/hw tool for resetting those bytes.

**autofan1965** · 17th March, 2015, 03:18 PM

He cant do this type of pcf.

**coolsoda** · 17th March, 2015, 08:16 PM

Originally Posted by MrSporty

Apparently someone (an american guy i think, it was posted on here somewhere) had developed a sw/hw tool for resetting those bytes.

He is a member of this Forum (indienick),and you have no chance of sharing his method

http://www.freshcarkeys.com/catalog-euro.php

**Bllinda** · 18th March, 2015, 03:16 PM

Need more help.
It's hard to understand what actions are needed.
Decrypt ..... Thanks

P.S. PM

Originally Posted by autofan1965

You will complete decrypted dump or crypto, pin and vin will be enough for you?

**rm23** · 27th June, 2015, 03:23 PM

Originally Posted by P&D

Hi do you have the pre-code for the none flip key please ??

Hi

Can someone help with this? any info how to precode non flip 3 button key for vectra c? avdi precode not working, car starts but remote not operate;(