Hello
Ive read alot but request someone tell me the order in which I should go about a solution for my problem.

I have a 2004 Audi A6 C5 1.9tdi and Ive lost the key! The car is currently accessible with a spare flip key I bought and I got a blade cut so no problem unlocking doors, but the alarm is activated and the key wont start the car because its never been programmed for this car.

So am I right I need to retrieve the secret code from the ecu in order to program the key to the immobilizer but I cant get that code because the immobilizer is activated which blocks retrieval via obd2? So I have to take the ecu off the car and get the file which has the code, turn the immo off in that file 95040.bin then put the ecu back on the car and then go through the key programming procedure?

Many thanks for any help provided!

ahh thx for that, that would explain why i get error 0x00

so i need to read the instrument cluster for the pin. i only have a ebay blue kkl cable ch340 usb, and a bluetooth obd2 adaptor (which ive not tried yet)

the blue cable works with vcds lite, or do i need to use some other program? sorry but like i said im REAL noob lol. i would pay someone to do this but the audi dealer here in rural hungary wont give me an appointment for 2 weeks lol and god knows how much that will cost!

thanks!

thanks for the help. i got that eeprom 1.19g i set the port to port 2 which is same as my blue cable but it gives error no ecu found. I can only get vcds lite to work it uses kw1281 protocol or something like that. I will post a pic of the details it comes up with on that program. thx

well i dunno why it wont work for me, it seems i have VDO. is there some other software i can try. i tried vag commander, wont connect either

Won't be doing much with that

I guess its the ch340 chip problem - i have good quality blue kkl based on ftdi 232rl and have no problems ( i bought it in Poland from a local business called viaken , costed about 7$ )

I also have the original galletto and vag chips, the ch340 has its advantages, there is no third-party k-line converter and driver problems. I think that the problem in the software and not in the gland

woohoo success! i installed windows 7 and it connected with eeprom programmer 1.19g

i selected read eprom on the dash tab and saved the bin file, now what do i do lol, ok i guess i have to read more lol. i did see some info about login on that program with a code of 1701 so i opened vcds lite and tried to use that code to login to the immo module and i put a 0 in front of it but it said not accepted turn off ignition for a while and try again so i guess thats not the code i need?

also getting ahead of myself here but once i work the code out what if my second hand key fob wont reprogram? how do i take the immo off completely

many thanks!