This indicator light is part of the Engine Control System which monitors various emission control system components. If this light illuminates while driving, it indicates that a potential malfunction has been detected somewhere in the emission control system.
This light will also illuminate when the ignition switch is turned to the ON position, and will go out in a few seconds after the engine is started. If it illuminates while driving, or does not illuminate when the ignition switch is turned to the ON position, take your vehicle to your nearest authorized HYUNDAI dealer and have the system checked.
Generally, your vehicle will continue to be drivable, but have the system checked by an authorized HYUNDAI dealer promptly.
CAUTION
Hyundai Tucson (LM) 2010-2015 Service Manual: SS-B Solenoid Valve(ON/OFF) Specifications
Specifications
ON/OFF Solenoid Valve(SS-A, SS-B)
x Control type : Normal low type
Control pressure kpa (kgf/cmx, psi)490.33(5.0, 71.12) Internal resistance(x)10 ~ 11
...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Electric chromic mirror (ECM) with HomeLink® system, compass and Blue Link®
(if equipped)
Your vehicle may be equipped with a Gentex Automatic-Dimming Mirror with a Z-Nav™
Electronic Compass Display and an Integrated HomeLink® Wireless Control System.
During nighttime driving, this feature will automatically detect and reduce rearview
mirror glare while the compass indicates the ...