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BMW 5-Series (G30) Forum iDrive, Audio, Bluetooth, Phone, Cameras, Electronics + Coding 3AC Tow bar hitch error

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      05-30-2025, 02:16 PM   #1
volkan143
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Drives: E90 LCI & F11 LCI
Join Date: May 2019
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3AC Tow bar hitch error

Hi folks! Your expertise is needed. I have a G32 here which is displaying a tow hitch error.

Now I wanted to code out the tow hitch and therefore proceeded as follows:

- 3AC removed from VO
- BDC, DKOMBI, NBT coded according to VO
- Control unit (4 cables with A,B,C,D) removed from the trunk

Result: The driver assistance systems have now failed.

When the control unit is reconnected, the errors with the driver assistance systems go away, but the error with the tow hitch comes back.

I am looking forward for your answers!

Best regards!

Update:
Solved!! Solution: Plug in Tow Hitch ECU again and VO Code the ECU. Thats it. If you want to work "cleaner" then you have to Code also: RS, RSE, SAS2, USS, VDP, ICAM3

Last edited by volkan143; 06-01-2025 at 02:07 AM..
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