Air bag light on

check fuses and relays their are different locations for air bag sensors and their is also seat belt sensors and seat switches [check the connections under the seat ]---their are sensors under the front bumper behind the valance by the radiator support also if air bag curtains passenger side between inner fender, door and door pillar the following links have information or what to look for and assist in solving your problem the recall doesn't cover your vehicle but it pertained to the passenger air bag problem as well as the 05 posting
Why is my airbag light on 2005 Hyundai Elantra Air Bags Frontal Sensor Control Module Problems More than 280 000 Hyundai Elantras Recalled Over Air Bag Problems

If the air bag light is on there is a code stored in the SRS restraint module - air bags ! Wiring problem , impact sensor ! First place to start is have the vehicle check for codes . Not with OBD2 code reader., factory or professional grade scan tool . If you have not worked on air bag systems I recommend you take it to a ASE certified repair shop or the dealer . People have been killed by accidental air bag deployment , by not knowing what's up . Takes special tools !

Young boys will do that.lol. crossed a wire somewhere.

There are several sensors related to air bags. Normally when the panel light is on it indicates the air bag in NOT FUNCTIONAL. You should have this check by a reliable shop or dealer. If you and not sure of how to test or check an air bag system you shouldn't tinker with the system. It is possible to set off the air bag(s) accidentally. That could be dangerous.

YOU NEED AIR BAG CODE SCANNER TO RESET LIGHT/HORN CHECK HORN RELAY /FUSES/WIRING/HORNS CONTACKS IN STEERING WEEL

The Supplemental Air Bag Restraint System consists of two basic sub-systems:

• Driver side air bag module (043B13) and passenger side air bag module (044A74).
• Electrical system, including RH primary crash front air bag sensor and bracket (14B004) , LH primary crash front air bag sensor and bracket (14B005) , LH kick panel safing rear air bag sensor and bracket (14B007) and air bag diagnostic monitor (14B056) .

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13 Air Bag or Primary Crash Sensor Circuit Shorted to Ground

Inspect air bag sliding contact wiring in steering wheel , driver side air bag module , and passenger side air bag module for damaged, chafed or pinched wires.

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With the air-bag light permanently on, you will need an expert to check the air-bag sensor to confirm if it's gone bad.

You may not be able to turn the light off because it requires that the error be corrected then the light goes off by itself.

There are special/ dedicated tools for handling this issue.

Good luck and thanks for using Fixya.

Sometimes the wiring under the passenger seat can become compromised from objects in floor becoming wedged under the seat.May need to be reconnected if possible..Usually if the air bag light remains on , it means the air bag will not engage if needed. Should have the dealer service department check for you.

The Check light is on because one of the sensors in the system is not being read properly by the vehicle ECU. You need to take it to someone & have a scan tool hooked up to it to extract the
DTC(s) that may be stored. Please be advised that a loose Fuel Cap will set the Check light for sure.

The Air Bag light does a self-test, and, if no one is in the passenger seat, it turns to the "Off" setting. There is a sensor under the passenger seat that tells the Air Bag ECM this. The light is there to let you know that the pass air bag will not go off, in the event of a collision, and no one is in the pass seat. Saves the inmsurance company money, probably.

Have a certified professional check the air bag sensors. A loose connection will cause this.