Hyundai Elantra MD/UD: Air bag collision sensors - Why didn’t my air bag go off in a collision? (Inflation and non-inflation conditions 
of the air bag) - Air bag - advanced supplemental restraint system - Safety features of your vehicle - Hyundai Elantra MD 2010-2015 Owners manualHyundai Elantra MD/UD: Air bag collision sensors

(1) SRS control module

(1) SRS control module
(2) Front impact sensor
(3) Side impact sensor
(4) Side pressure sensor

WARNING

  • Do not hit or allow any objects to impact the locations where air bags or sensors are installed. This may cause unexpected air bag deployment, which could result in serious personal injury or death.
  • If the installation location or angle of the sensors is altered in any way, the air bags may deploy when they should not or they may not deploy when they should, causing severe injury or death. Therefore, do not try to perform maintenance on or around the air bag sensors. Have the vehicle checked and repaired by an authorized HYUNDAI dealer.
  • Problems may arise if the sensor installation angles are changed due to the deformation of the front bumper, body or B pillars or front door where side collision sensors are installed. Have the vehicle checked and repaired by an authorized HYUNDAI dealer.
  • Your vehicle has been designed to absorb impact and deploy the air bag(s) in certain collisions. Installing bumper guards or replacing a bumper with non-genuine parts may adversely affect your vehicle’s collision and air bag deployment performance.
Why didn’t my air bag go off in a collision? (Inflation and non-inflation conditions of the air bag)
There are many types of accidents in which the air bag would not be expected to provide additional protection. These include rear impacts, second or third collisions in multiple impact accidents, ...

Air bag inflation conditions
Front air bags Front air bags are designed to inflate in a frontal collision depending on the intensity, speed or angles of impact of the front collision. Side impact and curtain air bags (i ...