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Why is the Audi MMI tire pressure reset displayed in gray?

2 Answers

DiJosie

07/25/25 6:48am

Audi MMI tire pressure reset displayed in gray indicates a malfunction in the tire pressure monitoring system. Possible causes of tire pressure faults: Abnormal tire pressure: Generally, an alarm is triggered when the pressure is below 1.8 bar or above 3.0 bar. In this case, tire inspection and pressure adjustment are required. Tire pressure monitoring not reset: After inflating the tires, if the tire pressure reset is not performed promptly, the system will still record the previous data, causing the tire pressure warning light to illuminate. Simply performing a tire pressure reset will resolve this issue. Damaged tire pressure sensor: The tire pressure sensor, which monitors tire pressure, is installed inside the tire and connected to the inflation valve. If the sensor is damaged during driving (e.g., by impact), the tire pressure warning light will also illuminate. In such cases, the only solution is to replace the sensor with a new one. Method for resetting tire pressure monitoring: First, turn on the ignition, then press and hold the tire pressure reset button until you hear a "beep" sound before releasing it. The tire pressure monitoring system will then store the current normal pressure data, automatically clear the previous data, and finally, the warning light on the dashboard will turn off, indicating the tire pressure reset is complete.

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StLeo

08/10/25 6:17pm

A few days ago, my Audi also encountered this issue where the MMI tire pressure reset was grayed out. As soon as I turned on the screen, I noticed the reset button was gray and unresponsive, which was quite puzzling at the time. I figured it was mostly because the system wasn't fully ready during the startup phase—like right after starting the car or when parked, the sensors might not have woken up yet. It could also be due to the sensor batteries running out, since they're always working and can develop issues over time, or maybe just a software glitch. I tried restarting the engine and waited a few minutes before trying again. If it still doesn't work, I'll have to take it to the shop for the technician to check if the wiring is broken or there's interference. If you run into a similar situation, don’t panic—first make sure your tires are properly inflated, and regular maintenance can prevent these minor issues.

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