Hello guys!
I am writing to you from Romania. I read all the topic using google translate also some topics @drive2 .ru
I retroffited blind spot into my MK6 golf 6 (5Q0 907 686 C and 685 C H12 0080 radars). All the wirings are ok, radars are coded (01031102), 5F (MIB2) is coded, i see the menu BSD and RTA onto my instrument cluster.
Now the problem: i can't activate blind spot neither from the cluster nor from the navigation, the leds from the mirrors don't light up.
Vcds error on 3C: 336901 - Databus U1121 00 [009] - Missing Message
[Braking ECU ESP_33 - no signal/no communication].
My ABS is 1K0 907 379 AH. I know, it's old and must be changed.
My question now: it is absolutely necessary to change the ABS pump? I don't really need automatic brake, light and sound warning is enough.
Is there any possibility to get the system active and working without changing the ABS pump?
Thanks in advance for your reply!
If you need any more info please let me know.
Regards!
//Edit: Problem solved! Byte0 was the key.
After i coded 3C with 03031102 the error of no cummunication with ABS was gone and the system started to work 
03 means Brake intervention deactivated
Special thanks @ALF