
The method to turn off the light on a Buick: Press the menu control button on the right side of the steering wheel, and you will see the maintenance reminder on the vehicle's dashboard. Then, press and hold the close button on the left side of the steering wheel until you hear a beep sound before releasing it. This will reset and cancel the maintenance light. The maintenance reminder light is a warning light set by the manufacturer during vehicle production to ensure proper vehicle operation, reminding the owner to take the car to a 4S shop for maintenance in a timely manner to ensure driving safety. The purpose of car maintenance is to keep the vehicle clean and in good technical condition, eliminate potential hazards, prevent faults, slow down the deterioration process, and extend the service life. When the maintenance light comes on, the car should be taken for maintenance as soon as possible.

Last time I did on my Regal myself, I also encountered this issue. Actually, you can manually reset it in the center console screen. First, don't start the car, just turn the key to the ON position (dashboard lights up fully), then quickly press the accelerator pedal to the floor three times in a row, followed by pressing the hazard light button four times quickly. Finally, follow the blinking prompt on the dashboard and press the confirm button. However, note that for models after the 2018 version, it's better to use the steering wheel buttons: after powering on, long-press the right menu button to enter engineering mode, then select the maintenance reset option. For the old Excelle, you can reset it with just the key—specific steps are in Chapter 7 of the manual. After this operation, even if the light goes out, it's not fully done; you need to wait until the next oil change for the count to truly reset.

It's much simpler to operate than expected. Get in the car, turn on the ignition without starting the engine, press and hold the menu button on the right side of the steering wheel for 5 seconds. When the menu appears on the instrument cluster, use the scroll wheel to navigate to the oil life option, then press and hold the confirmation button to reset it. After driving the GL8 for so many years, I've found that models after 2015 all support this method. However, two points should be noted: it might fail if the battery voltage is insufficient, and after resetting, it's best to start the engine and wait for 30 seconds to confirm. Additionally, the operation is slightly different for hybrid versions—you need to find the vehicle maintenance option in the settings menu on the central control screen.

There are significant differences in the reset methods among models. For the new LaCrosse, simply enter the settings menu on the touchscreen, locate Vehicle Maintenance - Reset Oil Life. For older Excelle models, you need to use a combination of dashboard buttons: hold the trip reset button while turning on the ignition, release when the oil display flashes, then press and hold again. If you really can't figure it out, don't force it - the dealership can complete the reset in just 1 minute using their diagnostic computer. Actually, forgetting to reset after minor maintenance is quite common - at most it will trigger a warning light, but it doesn't affect driving safety. You can handle it when you have time.

Resetting often gets stuck at the first step, with the key being to seize the time window. The operation must be completed within 15 seconds after power-on: For Regal models, simultaneously press the two adjustment buttons on the dashboard and wait for the warning lights to flash; for Verano, press and hold the switch at the top of the turn signal lever when the reminder is displayed. A prompt tone indicates successful reset. Avoid using the battery disconnection method, as it may trigger the anti-theft system, causing window lift failure. For models equipped with OnStar, cloud data will sync after reset. It's recommended to wait until the confirmation prompt pops up on the central control before turning off the engine.

The safest way is to consult the manual! On page 83 of my Envision's manual, it states: Switch the steering wheel to the oil life interface, press and hold the center button of the five-way joystick for 10 seconds, and the value will change to 100% when successful. However, in practice, it was found that the system locks the reset function when the temperature is below -7°C. If the central control screen has been modified, you may need to connect an OBD device for operation. For DIY, you can purchase a simple diagnostic tool with a reset function, which costs less than a hundred dollars. Regular resets help record the actual cycle, and handling it before a long trip is especially reassuring.


