The maintenance minder system shows engine oil life in the information display to let you know when it's time to have the engine oil replaced and regular maintenance done. There's no longer a maintenance schedule in the owner’s manual. 

The system shows engine oil life as a percentage, which drops over time as the vehicle racks up miles. It starts out at 100% with fresh engine oil, and winds down to 0%, signaling the oil life is over.  

The system counts down oil life based on engine operating conditions (both normal and severe). If the engine runs at higher temperatures and rpm, or at low temperatures during short trips, the oil life will deplete faster than an engine running under more normal conditions.  

Depending on the oil life percentage, the system shows three different messages when you turn the ignition switch to ON (II). 

Here's what you could see:  A percentage will show up on the display starting off at 100% and diminishing as the vehicle is driven. Once the percentage gets to 15%, a wrench on the dash is illuminated letting the owner know that service is due soon.  The first part of the code is the main code. It's either A or B, never both. A requires an oil change only and B requires an oil and filter change and some other routine maintenance items.

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