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How to Reset an Oil Change Light on Buick Cars

by Contributing Writer; Updated June 12, 2017

The Buick car has a computer system that will warn you about various problems when they occur. One of the regular maintenance requirements it monitors is the engine oil and oil filter. If your "Change Oil Soon" light stays on after you start the car, it is time to service the oil and oil filter. You should do this as soon as possible after you see the light. It does not matter if you do it yourself or have a professional do it. This is the most significant part of the process, but if you do not reset the "Change Oil Soon" light; it will not function properly. When it is not reset, it is not capable of monitoring your oil system.

Under The Hood:

 How to Reset an Oil Change Light on a Buick Rendezvous

Buick Rendezvous With DIC

Turn the ignition key to the accessory power position. This is also known as the key-on/engine off position. It powers all the electrical equipment in the Rendezvous without the engine running.

Depress the mode button on the DIC display until it reads "Oil Life Left/Hold Set To Reset."

Depress the set button and hold it down until the DIC display reads 100 percent.

Listen for three chimes.

Start the Rendezvous to make sure the oil change light is no longer displayed in the DIC. If you didn't hear the three chimes or the oil change light is still on, the system was not reset.

Buick Rendezvous Without DIC

Turn the ignition key to the key-on/engine off position.

Depress the accelerator pedal slowly three times within five seconds.

Turn the ignition key to the off position.

Start the Rendezvous to ensure the change oil light is no longer displayed on the instrument panel. If it is still there, the system was not reset. Repeat the procedure.

 How to Reset the Change Oil Soon Light on a 2003 Buick Century

Insert the key into the ignition, and rotate it to the "Run" position without starting the engine.

Completely depress the gas pedal three times within five seconds.

Observe the "Change Oil Soon" light. If it flashes, the system is resetting.

Rotate the key to the "Off" position, and then start the engine. The oil change interval period should be reset to 100 percent.

Items you will need

  • Keys

 How to Reset the Change Oil Soon Light on a 2002 Buick Century

Turn the key to the "Run" position, but do not start the engine.

Press the gas pedal completely down and then release it. Repeat this three times within a period of five seconds.

If the "Change Oil Soon" light blinks, the oil monitoring system is in the process of being reset.

Turn the vehicle key to the "Off" position.

Start the engine. The "Change Oil Soon" light should come on for a few seconds (as all the monitoring lights do), but then go off. If this is the case, you have completed resetting the "Change Oil Soon" light. If the light stays on after a few moments of the car running, the system has not been reset. Repeat the steps to reset the light.

Items you will need

  • 2002 Buick Century

  • Oil and oil filter properly replaced

 How to Reset the Change Oil Light on a 2001 Buick Park Avenue

Turn your key to the last ignition position (as far as the key will go without starting the engine).

Examine the area to the left of your steering wheel to find your DIC control panel. Look closely at the buttons to get comfortable with them.

Press the button labeled "Gage Info" several times, until the display screen shows "Oil Life Index".

Press and hold the button labeled "Reset" for six seconds. Turn the key back to "Off", and then remove it from the ignition.

Re-insert the key and start the engine. The oil life index will be reset; the light will be turned off.

 How to Reset an Oil Light in a 2006 Buick LaCrosse

With DIC

With the ignition in the "On" or "Run" position and the engine off, press and release the "Option" button -- the button with "i" on it -- on the DIC interface until the DIC screen displays "Engine Oil Monitor." Press and release the "Set/Reset " button -- the button with the left-pointing arrow on it -- on the DIC interface and a screen will appear, alerting you that you have successfully reset the "Change Oil Soon" message.

Without DIC

Turn the ignition to the "Run" position, but do not start the engine. Press the accelerator pedal to the floor and release it three times within five seconds of turning the key to the "Run" position. Turn the ignition to the "Off" position, then start the vehicle and verify that the "Change Oil Soon" message no longer shows.

About the Author

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