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View Full Version : Audi 0261203552/553 IMMO OFF Please help


DoomRider
28th February, 2020, 12:55 PM
Hi all,
I need immo off for Audi A4 Bosch 0261203552/553.
I tried solution from this thread https://www.digital-kaos.co.uk/forums/showthread.php/307301-Audi-A4-0261203552-553?p=1790621&viewfull=1#post1790621 but car doesn't start and DTC ROM corrupted comes up.

Can anyone help me to modify flash for permanent immo off?

Many thanks!
rch11
28th February, 2020, 01:11 PM
Try this............
DoomRider
28th February, 2020, 01:13 PM
Try this............

I'm affraid that eeprom solution works only until you disconnect battery, or maybe I'm wrong?
I,m looking for permanent solution. Are you sure that eeprom solution is permanent?
kiszka
28th February, 2020, 01:13 PM
I'm affraid that eeprom solution works only until you disconnect battery, or maybe I'm wrong?
I,m looking for permanent solution. Are you sure that eeprom solution is permanent?

this solution is just like you say
please report
DoomRider
28th February, 2020, 01:21 PM
So does anybody can help me with permanent solution on flash?
rch11
28th February, 2020, 01:59 PM
Make WP.....
DoomRider
28th February, 2020, 02:01 PM
Make WP.....

I don't know what WP means. Now I feel like total noob :)
rch11
28th February, 2020, 02:07 PM
Write protection
DoomRider
28th February, 2020, 02:12 PM
Write Protection for eeprom or flash?
rch11
28th February, 2020, 02:23 PM
eeprom.......
DoomRider
28th February, 2020, 04:44 PM
But 24C02 memory can't be put in Write Protect.
Only 2C03 has WP pin but it complies only to upper 1kB of memory. I don't see any way to put 24C02 into WP.
kiszka
28th February, 2020, 05:05 PM
gentlemen, all you have to do is properly immo off, in eeprom
and that's all you need for this ecu
DoomRider
28th February, 2020, 05:47 PM
gentlemen, all you have to do is properly immo off, in eeprom
and that's all you need for this ecu

Is there any chance you can share with us prper way to immo off in eeprom for this ECU dear sir?
DDex
29th February, 2020, 03:18 AM
Yeah, I would like to learn it too... Please. )
DoomRider
2nd March, 2020, 12:48 PM
So this is how I made it working.
I changed stock chip 24C02 with 24LC02. LC02 has Write Protection for both 2K of memory on pin 7.
I used eeprom dump sent by rch11 and now everything works perfect.
Thank you all for help:)
kiszka
2nd March, 2020, 02:35 PM
So this is how I made it working.
I changed stock chip 24C02 with 24LC02. LC02 has Write Protection for both 2K of memory on pin 7.
I used eeprom dump sent by rch11 and now everything works perfect.
Thank you all for help:)
and there is no error in ecu
internal eeprom error