FORD 2013 Taurus v.1 - Manual (Page 105)

WARNING: Driving a vehicle with the brake system warning light
on is dangerous. A significant decrease in braking performance
may occur. It will take you longer to stop the vehicle. Have the vehicle
checked by your authorized dealer as soon as possible. Driving
extended distances with the parking brake engaged can cause brake
failure and the risk of personal injury.
Charging system (RTT)
Illuminates when the battery is not charging properly. If it stays
on while the engine is running, there may be a malfunction with
the charging system. Contact your authorized dealer as soon as
possible. This indicates a problem with the electrical system or a related
component.
Door ajar (RTT)
Displays when the ignition is on and any door is not completely
closed.
Engine oil pressure (RTT)
Illuminates when the oil pressure falls below the normal range.
Engine coolant temperature (RTT)
Illuminates when the engine coolant temperature is high. Stop
the vehicle as soon as possible, switch off the engine and let
cool.
Grade assist (if equipped) (RTT)
Illuminates when grade assist is turned on.
Instrument Cluster 105
2013 Taurus
Owners Guide gf, 1st Printing
USA (fus)