The red lamp on the airbag malfunction indicator ("pregnant man")
After connecting VAG-COM showed an error on the front crash sensor G283 (driver side)
1 Fault Found
01738 - Crash Sensor for Front Airbag; Drivers Side (G283)
014 - Defective - Intermittent - MIL ON
To test, I swapped 2 of the shock sensor and the error sensor G284 (passenger side), this means that with the wiring and contacts everything is OK, and the problem is the crash sensor
In order to disable the impact sensor from the yellow chip, you need to click on the tongue and push it towards the sensor itself, then the sensor POPs up without any effort
I bought a used sensor 1K0909606b for 10$
Front crash sensor parts (acceleration sensor) for Audi A6 C6
VAG 4L0959651 (I had this),
VAG 1K0909606B (installed this)
VAG 8K0959651 (not tested, but should approach the)
About disconnecting the battery, after disconnecting the negative terminal there was an error on the steering sensor G85
Reset the error is not required to make it disappear - you need to drive a few turns.
Note: when connecting VAG-COM to the ABS unit, an ESP FAULT SEE OWNER'S MANUAL will light up on the dashboard!
Error
01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30