Audi A6 with Pre-Sense system error: how to fix Audi A6 with Pre-Sense system error: how to fix

I’Audi A6 with problems operating system pre-collision brakingaid lane change and speed limiter this is one of the cases of ADAS anomalies that we will address in this study. In the following paragraphs, we report the details of the Audi PreSense problem and the solution of the official technical bulletin distributed by a well-known company that produces technical bulletins and tools for the aftermarket. As always, we remind you to make use of your rights if the used car warranty is valid. If, on the other hand, it has already expired and the workshop is not able to solve the problem, show them the following information.

AUDI A6 WITH PRE-SENSE SYSTEM ERROR CODE B2F04

ADAS systems are a valid and comfortable driving aid, provided they are effective and work properly, especially when used to prevent road accidents. According to Audi’s official technical bulletin, some Audi A6 ADAS functions they could Not be available due to a software problem. The defect may manifest itself more on certain models:

• Audi A6 product from 2011 to 2017;
• the defect manifests itself with the malfunction of the braking system pre-collision, lane change assist and speed limiter;
• in the diagnosis, it is possible to find the presence of the Audi error code B2F04 “Development Code 4”.

AUDI A6 SOLUTION WITH LANE CHANGE, SPEED LIMITER AND PRE-SENSE MALFUNCTION

If the diagnosis confirms the existence of the error code linked to the failures of the pre-collision braking system, the lane change assistance system and the speed limiter, the solution which has proven its effectiveness is:

• update software of the image processing unit.

The details of the intervention come from newsletter technician official Audi 2042266/6to which the automotive repairer can refer for more information.

SITUATIONS IN WHICH THE AEB CAMERA DOES NOT WORK

It’s very common malfunction or unavailability of ADAS systems in cars equipped with a camera on the windshield. Usually this happens when the windshield is not replaced professionally, with the correct assembly of sensors and camera, and then calibrationas shown in the following video.

Some IIHS tests have shown that even when there are no faults reported by the car, the proper functioning of the driver assistance systems is not guaranteed. That’s enough For example the misalignment of the camera by a few millimeters in relation to its assembly, to strongly influence the system’s ability to intervene in the event of a risk of accident or the reliability of assisted manoeuvres.