Audi Q4 e-tron Multiple Error Messages Need Diagnosis

Had similar issues with my 2020 Audi e-tron GT. The multiple fault codes across different displays typically point to a vehicle coding issue rather than individual system failures. When the malfunction indicator appeared on my car, it turned out the control modules needed recoding after a software update failed to complete properly. The check engine light and system warnings are often triggered by communication errors between modules rather than actual component failures in electric Audis. This requires specialized diagnostic equipment to properly read and clear the fault codes. This is not typically a serious mechanical issue but needs attention from technicians with proper tools and coding knowledge for EVs. In my case, the resolution involved a complete diagnostic scan, control module recoding, and software reinstallation. These electronic issues are common in modern EVs and require dealer-level diagnostic scanners to properly address. Would recommend having this checked at a certified service center that specifically handles e-tron models, as generic scanning tools may not access all the required systems. The multiple error messages across screens typically indicate a software-related problem rather than hardware failure.

Thanks for sharing your experience with the e tron GT software problems. The dealer fixed my control module issues about 3 months ago, but I keep wondering if I overpaid for what seemed like a simple software fix. The engine light hasnt come back since the repair but Im still getting occasional glitches with the infotainment system. Do you remember what you paid for the diagnostic scan and recoding? Also curious if youve had any recurring issues since they fixed it?

After getting my Audi e-tron GT fixed at the certified service center, the total cost came to 360 Euro for the complete control module recoding. While this might seem steep for a software fix, the specialized OBD-II equipment and expertise needed for these complex EV systems justify the cost. The malfunction indicator and fault codes havent returned since the repair. Your occasional infotainment glitches might need a separate diagnostic scan, as these systems can sometimes require individual attention even after the main coding issue is resolved. The engine light staying off is a good sign that the primary control module problem was properly fixed. Modern EVs are heavily dependent on proper coding, and when the software is correctly configured, these systems typically remain stable. In my case, the initial diagnostic scan showed multiple communication errors between modules, but once the coding was corrected, all systems have been running smoothly for the past year. The key was having it properly diagnosed with manufacturer-specific scan tools rather than generic diagnostic equipment.

Thanks for the feedback. After seeing these responses, I finally took my Q4 to the dealer last week. The scan tool showed similar communication errors between modules. Ended up paying 420 Euro for the complete diagnostic work and control module recoding. The tech explained they needed special engine diagnostics software specifically for the e-tron system. Apparently the malfunction indicator was triggered by an incomplete update, just like others mentioned. Definitely felt better knowing this was a known issue. The whole process took about 3 hours but they got all the error messages cleared. No engine light or system warnings since then. The infotainment is working perfectly now too. Guess sometimes you just need the right diagnostic equipment and expertise, even if it costs a bit more. Still keeping an eye on things but feeling much more confident now that its been properly fixed with the correct OBD-II tools. Big relief to have it sorted properly.