Hello in the car, the engine controller was replaced because the old one was damaged and a certain spec reset both the ecu and cim, then the keys were thrown away and a problem arose because the old keys cannot be coded. Is it possible to remove the mechanical key from the controller's...

Hello in astra h, you will not write back old keys, you need to replace the crypto

You are sure, it seems to me that if I had the correct mechanical key, the old keys will be added. I'm 90% sure I've already done that.

There is a PCF7941AT transponder

Hello again, according to the directory the same transponder is in the vectra, there you can 100% re-code the key from this car. Maybe we did not understand each other, I do not want to add a stimulant from another car, only the original key from this car.

Okay, but when you write that you replaced, you reset the ecu and cim, is it not like it was from another car

It's not me, but ok. Just that the immo key is generated on the basis of a mechanical key that is 100% saved in cim and I do not know if it is also in ecu because if it was, I have the old ecu and bin from it. I connect the old ecu and cim gets the key from the old ecu then I have the opportunity to view it and upload it to the cim and add the old keys. Only the old ECU is damaged and the memory transfer or key reading from the file remains. I am not 100% sure if it will work. Cim can be logged in from another car, provided that you have a pin and a mechanical key and the keys can then be added again.

Interesting?. keys erased from immo with transponder cr. you will not write with the cable.

So there are new transponders or a key reset.

vectra c has pcf 7946 and this is a completely different key if something went wrong during the CIM programming procedure, there is no option to add old keys.

It seems to me that I will add but new or cleaned. Will anyone explain why the keys with the transponder 7946 will add again and 7941 not? The layout application is identical.

Astra H 2006 1.9DT - ECU Replacement & CIM Reset: Old Key Coding & Immo Code Changes

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#1 16335943 10 Mar 2017 15:29

piotrekwoj1 piotrekwoj1

Level 42

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Post #1
16335943 10 Mar 2017 15:29

Hello in the car, the engine controller was replaced because the old one was damaged and a certain spec reset both the ecu and cim, then the keys were thrown away and a problem arose because the old keys cannot be coded. Is it possible to remove the mechanical key from the controller's memory? because I don't know what's in it. On 99% of the cim it has a programmed key number from the new ecu and therefore I will not add the old keys because the immo code has changed.
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#2 16336020 10 Mar 2017 16:10

tomek4 tomek4

Level 21

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Post #2
16336020 10 Mar 2017 16:10

Hello in astra h, you will not write back old keys, you need to replace the crypto
#3 16336062 10 Mar 2017 16:37

piotrekwoj1 piotrekwoj1

Level 42

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Post #3
16336062 10 Mar 2017 16:37

tomek4 wrote:
Hello in astra h, you will not write back old keys, you need to replace the crypto

You are sure, it seems to me that if I had the correct mechanical key, the old keys will be added. I'm 90% sure I've already done that.
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#4 16336131 10 Mar 2017 17:22

tomek4 tomek4

Level 21

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Post #4
16336131 10 Mar 2017 17:22

There is a PCF7941AT transponder
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#5 16336147 10 Mar 2017 17:29

piotrekwoj1 piotrekwoj1

Level 42

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Post #5
16336147 10 Mar 2017 17:29

Hello again, according to the directory
http://transpondery.com/transponder_catalog/opel_transponder_catalog.html
the same transponder is in the vectra, there you can 100% re-code the key from this car. Maybe we did not understand each other, I do not want to add a stimulant from another car, only the original key from this car.
#6 16336190 10 Mar 2017 17:59

tomek4 tomek4

Level 21

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Post #6
16336190 10 Mar 2017 17:59

Okay, but when you write that you replaced, you reset the ecu and cim, is it not like it was from another car
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#7 16336277 10 Mar 2017 18:40

piotrekwoj1 piotrekwoj1

Level 42

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Post #7
16336277 10 Mar 2017 18:40

It's not me, but ok. Just that the immo key is generated on the basis of a mechanical key that is 100% saved in cim and I do not know if it is also in ecu because if it was, I have the old ecu and bin from it. I connect the old ecu and cim "gets the key from the old ecu" then I have the opportunity to view it and upload it to the cim and add the old keys. Only the old ECU is damaged and the memory transfer or key reading from the file remains. I am not 100% sure if it will work. Cim can be logged in from another car, provided that you have a pin and a mechanical key and the keys can then be added again.
#8 16336314 10 Mar 2017 19:01

janusz2008 janusz2008

Level 33

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Post #8
16336314 10 Mar 2017 19:01

Interesting?. keys erased from immo with transponder cr. you will not write with the cable.
#9 16336347 10 Mar 2017 19:16

piotrekwoj1 piotrekwoj1

Level 42

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Post #9
16336347 10 Mar 2017 19:16

So there are new transponders or a key reset.
#10 16336937 10 Mar 2017 22:16

wolf16 wolf16

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Post #10
16336937 10 Mar 2017 22:16

vectra c has pcf 7946 and this is a completely different key if something went wrong during the CIM programming procedure, there is no option to add old keys.
#11 16338070 11 Mar 2017 15:15

piotrekwoj1 piotrekwoj1

Level 42

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Post #11
16338070 11 Mar 2017 15:15

janusz2008 wrote:
Interesting?. keys erased from immo with transponder cr. you will not write with the cable.

It seems to me that I will add but new or cleaned.

Will anyone explain why the keys with the transponder 7946
will add again and 7941 not? The layout application is identical.
#12 16338641 11 Mar 2017 19:22

janusz2008 janusz2008

Level 33

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Post #12
16338641 11 Mar 2017 19:22

New for sure. 7946 are spare, you will also write clean. New, around PLN 30 is it worth it?
#13 16341387 12 Mar 2017 20:37

piotrekwoj1 piotrekwoj1

Level 42

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Post #13
16341387 12 Mar 2017 20:37

Hello, the problem is over again, and I was right, the keys can be re-coded to the car they came from. Thanks for the hints.
#14 16341855 12 Mar 2017 22:54

wolf16 wolf16

Company Account
Level 20

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Post #14
16341855 12 Mar 2017 22:54

What were you doing? tech2 definitely saves the vehicle configuration on the card.
#15 16342055 13 Mar 2017 05:14

piotrekwoj1 piotrekwoj1

Level 42

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Post #15
16342055 13 Mar 2017 05:14

Op-com did it.
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Topic summary

The discussion revolves around the challenges faced after replacing the ECU in a 2006 Astra H 1.9DT, particularly regarding key coding and immobilizer (immo) code changes. The user inquires about the possibility of removing the old mechanical key from the ECU's memory after the keys were discarded. Responses indicate that the old keys cannot be re-coded due to the new ECU and CIM (Column Integrated Module) setup, which requires a new crypto key. The PCF7941AT transponder is mentioned, with references to its compatibility with other models like the Vectra. It is noted that while the keys can be re-coded to the original vehicle, issues may arise if the CIM programming was incorrect. The discussion concludes with confirmation that new or cleaned transponders can be used for key re-coding.
Summary generated by the language model.