If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying HYUNDAI MOTOR AMERICA.
If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or HYUNDAI MOTOR AMERICA.
To contact NHTSA, you may call the Vehicle Safety Hotline toll-free at 1-888- 327-4236 (TTY: 1-800-424-9153);
go to http://www.safercar.gov; or write to: Administrator, NHTSA 1200 New Jersey Ave, SE, West Building Washington, D.C. 20590.
Consumer informationHyundai Tucson (LM) 2010-2015 Owners Manual: Curtain air bags
Curtain air bags are located along both sides of the roof rails above the front
and rear doors.
They are designed to help protect the heads of the front seat occupants and the
rear outboard seat occupants in certain side impact collisions.
The curtain air bags are designed to deploy only dur ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Repair procedures
Inspection
1.
After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
2.
Reconnect the PCV valve to the vapor hose.
3.
Run the engine at idle, then put a finger over the open end
of the PCV valve and make sure that intake manifold vacuum can be felt.
  ...