This is something that is best diagnosed in person using the Ford IDS scan tool. The problem could be a wheel speed concern so making sure all tires are the same air pressure per specs might be something to try before bringing it in to have diagnostics run on it.
Roll Stability Control
You can locate the RSC button on the 2010 Ford Explorer at the message panel.
Roll Stability Control
Roll Stability Control
how to fix a 2006 ford rsc sensor
What does rsc mean
ABS warning RSC service now warning message
Roll Stability Control , its part of the Advance Trac system ( traction control , electronic stability control , Roll Stability Control )
When the system is active this is normal due to the braking system being applied to a spinning wheel or a wheel that in under or over steering.
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The Ford Explorer service light will come on to tell you of a problem. The issue could be minor, or could result in loss of fuel economy, or cause engine failure over time.
You can view the 2002 Ford Explorer owners manual online at : www . motorcraft service . com ( no spaces ) Click on Owner Guides