What Causes the Audi A6 Display Screen to Go Black, Restart, and Then Light Up Again?

[VonZoey]

Audi A6 display screen going black, restarting, and then lighting up again can be attributed to the following specific reasons: 1. Poor line contact: It is necessary to promptly check whether there is a loose connection in the wiring. The loose part needs to be properly reconnected. 2. Aging power signal line: You can try replacing it with a new one. 3. Prolonged screen usage: This may cause a malfunction in the power supply module, requiring inspection or replacement at a 4S shop. 4. Defective circuit design: This issue is beyond the scope of self-repair, so it is necessary to have it inspected and repaired or directly replaced at a repair shop.

[LaDakota]

My A6 also experienced sudden black screen and reboot issues before, and it took several trips to the 4S shop to figure it out. This situation is mostly caused by the infotainment system acting up, especially when connecting to CarPlay via phone—it tends to crash easily. In some older models, the wiring harness connectors may oxidize or loosen, causing power interruptions and reboots when driving over bumps. Poor heat dissipation could also be the culprit, as the screen chip may overheat and trigger self-protection after prolonged exposure to summer sun. Additionally, unstable voltage can cause issues, particularly when the battery is three to four years old. Once, a mechanic detected through computer diagnostics that the multimedia module firmware was outdated, and updating it resolved the problem. I recommend first trying a forced reboot by long-pressing the volume knob. If that doesn’t work, connect a diagnostic tool to check for error codes.

[EvaLee]

Audi's central control screen blacking out or crashing is actually quite common. Firstly, the system may freeze—installing too many apps on an Android car system can cause it to crash. Secondly, check if the corresponding 10A fuse in the fuse box has turned black. Thirdly, inspect whether the gateway control unit on the left side of the trunk has gotten damp. Fourthly, the screen's ribbon cable may have poor contact due to thermal expansion and contraction from the air conditioning. The most troublesome issue I've seen is software conflicts, such as system file corruption caused by a power outage during a map upgrade. The order of troubleshooting is crucial: turn off the engine, lock the car, and wait 10 minutes for the capacitors to discharge. If restarting doesn't work, disconnect the negative battery terminal for five minutes to reset the ECU. If that still doesn't help, you'll need to use the ODIS engineering version to reflash the system. Normally, avoid using navigation continuously for more than three hours in high-temperature environments.

[EvelynMarie]

The display screen flickering or going black and bright usually has several reasons: overheating protection of the car's system, especially with metal film on windows that can concentrate heat; software bugs such as conflicts between map navigation and voice assistant; hardware issues mainly focus on wiring design defects in models before 2017; aftermarket installations interfering with the original car circuit. Last time my car had this issue, it cost 800 at the dealership to replace the screen wiring harness assembly. A simple fix is to simultaneously press the menu button + back button for ten seconds to force a reset. Remember to turn off the air conditioning before shutting down the engine to reduce battery load.