When the ignition switch is turned to the ON position, the AWD indicator will illuminate and then go off in a few seconds.
If the AWD system warning light illuminates, this indicates that there is a malfunction in the AWD system.
If this occurs, have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
Hyundai Tucson (LM) 2010-2015 Service Manual: Description and Operation
Description
Limitations Of The Navigation system
GPS Signal Reception State
As the GPS satellite frequency is received/transmitted in
straight lines, reception may not work if hiding devices are placed on
or near the GPS antenna or when traveling through the following
locations.
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T ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Special Service Tools
Special Service Tools
Tool (Number and name)IllustrationUse09977-29000Disc & hub assembly bolt removerRemoval and installation of disc & hub assembly.
...