This warning light illuminates when the tailgate is not closed securely.
Hyundai Tucson (LM) 2010-2015 Owners Manual: Tire chains
Since the sidewalls of radial tires are thinner than other types of tires, they
may be damaged by mounting some types of tire chains on them.
Therefore, the use of snow tires is recommended instead of tire chains. Do not
mount tire chains on vehicles equipped with aluminum wheels; if unavoi ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Direct Electro Hydraulic Actuator Coupling Repair procedures
Inspection
All units are filled up with coupling fluid (ultra-low
viscosity ATF) prior to shipping. Inspection, fill-up, and replacement
of coupling fluid is therefore not necessary (zero maintenance, lifetime
fluid).
Removal
Coupling Mainte ...