[freakmaster]

Hey guys,

at first i would like to say "thank you" for this forum!


Currently i am trying to retrofit "Comfort Access" to my 2006 BMW e61.
The hardware is already complete (Antennas, Wires, Controlunit etc.) but i am missing one or two CA-Keys.

I bought an AK300 Key Maker which is fine for PCF7943, PCF7944, PCF7945 transponder chips - but unfortunately i only find used CA-Keys with PCF7953 build in.

I ordered some new Chips from china which were delivered yesterday.
Because the AK300 is not able to write the 7953 i am searching for some hints how i can make the new keys to my car.

Thank you very much for your help!!

[TrevvyD]

Hey guys,

at first i would like to say "thank you" for this forum!


Currently i am trying to retrofit "Comfort Access" to my 2006 BMW e61.
The hardware is already complete (Antennas, Wires, Controlunit etc.) but i am missing one or two CA-Keys.

I bought an AK300 Key Maker which is fine for PCF7943, PCF7944, PCF7945 transponder chips - but unfortunately i only find used CA-Keys with PCF7953 build in.

I ordered some new Chips from china which were delivered yesterday.
Because the AK300 is not able to write the 7953 i am searching for some hints how i can make the new keys to my car.

Thank you very much for your help!!

I,m pretty sure the AK90 writes "53" chips.

[bgpavlp]

I'm not sure. AK90 work only EWS, not CAS.
The chips from China is fake or not prepared. You can not write.
You can use PCF7936,but RADIO not work.

[freakmaster]

@TrevvyD: As bgpavlp already wrote the AK90 is only for EWS

@bgpavlp: I am not sure if the chips are fake because they can be read with AK300 but not be written (the documentation of Ak300 says, it is not able).

Afaik PCF7936 is the "small black" passive transponder.

My target is to get the Comfort Access working so PCF7936 is not suitable for me

[bgpavlp]

Can you post Print Screen, how you read pcf7953 with AK300 ?

[freakmaster]

It is shown as PCF7945.
As soon as i am at home i will post some screenshots.

[Vlado ATM Chiptuning]

For cas 3+
Original transponder:
PCF 7936
PCF 7942
PCF 7943
PCF 7944
PCF 7945
Allowed transponders:
PCF 7942
PCF 7943
PCF 7944
PCF 7945

and long as i know pcf7953 come in f10 series....CaS4

[freakmaster]

This was also my information but i have 5 Keys at home with PCF7953 soldered on it...
If i did not had them @home i would not trust this information but they are physical on my table.

[Vlado ATM Chiptuning]

First time i hear this my friend..

[freakmaster]

Hey guys,

please find attached two pictures of one key.

I hope the quality is ok so you can zoom to see the Transponder...