How to Reset the Maintenance Light on a Buick LaCrosse?
3 Answers
To reset the maintenance light on a Buick LaCrosse, follow these steps: 1. Turn the ignition switch to the ON position without starting the engine. 2. Press the greater-than button on the center control panel, and the display will show "Reset." 3. Press the OK button to confirm and reset the oil life to 100%. 4. Turn off the ignition switch to complete the maintenance light reset. The Buick LaCrosse is a mid-size 4-door, 5-seater sedan under the SAIC-GM Buick brand. Its body dimensions are: length 5026 mm, width 1866 mm, height 1459 mm, with a wheelbase of 2905 mm and a fuel tank capacity of 55 liters. The Buick LaCrosse is equipped with a 2.0T turbocharged engine, delivering a maximum power of 174 kW at 5000 rpm and a maximum torque of 250 Nm between 1700 and 4000 rpm.
Last time when I helped a friend reset the Buick LaCrosse maintenance light, I figured out the method: First, press the start button without stepping on the brake to power up the dashboard, and check if the odometer displays a maintenance reminder. Then, fully depress the accelerator pedal three times in succession—the center console might beep once and enter engineering mode. Next, use the up and down buttons on the right side of the steering wheel to locate the oil life option, and hold the checkmark button for 5 seconds to reset it. A reminder: This operation should be performed when the engine is cold—I tried it when the engine was hot, and the accelerator pedal inputs weren’t recognized. After resetting, it’s best to start the vehicle to confirm the warning disappears. Also, for routine maintenance, remember to check tire pressure, windshield washer fluid, and brake fluid levels—especially before long summer trips.
The maintenance light reset actually involves three steps: turn on the ignition, press the accelerator pedal to the floor three times → wait for the diagnostic mode to activate → select the oil life option to reset. Practical tests reveal differences between older and newer LaCrosse models: pre-2018 models use the turn signal stalk buttons for adjustment, while post-2020 models operate via steering wheel buttons. It's recommended that owners keep a mechanical key handy, as electronic buttons may sometimes fail and require turning the key to power on. After resetting, don't rush off—double-check that the next maintenance mileage setting is correct. A quick reminder: if you change the oil yourself, remember to reset it twice, otherwise it might trigger a fault code.
