re: service light
if the mil "engine light " is on get it repaired. if the service (oil change, tire rotation) light is on reset it. if it's an 06 to 12 pathfinder hit info button to right of middle buttons between status and settings, scroll down to maintenance and reset "service" reminders.
Any code scanner can clear the code the issue is if there is a problem, a code will be tripped and the light will go back on. You need to identify why the light is on by reading the codes and fixing the issue.
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