I came across this in the '09 Matrix manual. No mention of it in the Vibe manual. It has me wondering whether this is just a 'dummy' setting using your Trip A for oil change interval or if it actually means anything. Anyone know?
2009 Toyota Matrix Owner's Manual wrote:After changing the engine oil (U.S.A. only)
The oil change system should be reset. Perform the following procedures:
1. Turn the engine switch OFF with the trip meter A reading shown.
2. While pressing the trip meter reset button (→P. 119), turn the engine
switch to the “ON†position.
3. Continue to press and hold the button until the trip meter displays
000000.