How to Deal with Persistent Tire Pressure Warning on Q50L?
3 Answers
Press the "MENU" button on the turn signal lever, select the "Tire Pressure Display" option in the "Trip/Fuel Information Menu", then press the Set button. When "Tire Pressure Relearn" is displayed, select "Yes" and press the Set/Clr button. The Driver Information Center will display "Tire Pressure Learning Active". The left front turn signal will remain illuminated; increase or decrease the left front tire pressure until it reaches 8.3 Kpa, then stop. Repeat the pressurization or depressurization operation for the remaining three tires in sequence.
I also encountered an issue with the tire pressure warning that wouldn't go away when I was driving my Infiniti Q50L a while ago, which was really annoying. At first, I thought it might be a tire leak, so I checked all four tires with a pressure gauge and found their pressures were normal. I even looked up the reset method in the manual—usually, you need to go into the central control menu, find 'Vehicle Settings,' and click 'TPMS Reset.' After performing the reset, you have to drive a few kilometers to let the system learn the new data. If the warning still persists, it might be due to a dead sensor battery or a damaged sensor. Later, I took it to the shop, and they found out one of the sensors had a weak signal. Replacing it fixed the problem. It's important to regularly check your tires as part of routine car maintenance.
Last time the tire pressure warning light kept staying on and couldn't be reset. I searched online for suggestions from Q50L owners. Many people advised not to rush to reset it but to actually measure the pressure first, ensuring all tires match the standard values (usually marked on the door frame or in the manual). After confirming the pressure is correct, enter the vehicle information system's settings menu to manually reset the TPMS. Some model years require turning off the engine and waiting 10 minutes before restarting for a test drive. If the issue persists, it's likely the TPMS sensor is faulty or there's signal interference, so using a diagnostic tool to check the error code is recommended. Replacing a sensor yourself isn't difficult, but make sure the model matches the original factory specifications.
