Hyundai Ioniq: Seat Belt Restraint System / Pre-tensioner seat belt (Driver and front passenger)

Your vehicle is equipped with driver's and front passenger's Pre-tensioner Seat
Belts (Retractor Pretensioner and Emergency Fastening Device System). The purpose
of the pre-tensioner is to make sure the seat belts fit tightly against the occupant's
body in certain frontal or side collision(s). The Emergency Fastening Device System
may be activated in certain crashes where the frontal or side collision( s) is severe
enough, together with the air bags.
When the vehicle stops suddenly, or if the occupant tries to lean forward too
quickly, the seat belt retractor will lock into position. In certain frontal or
side collision(s), the pre-tensioner will activate and pull the seat belt into tighter
contact against the occupant's body.
(1) Retractor Pretensioner
The purpose of the retractor pretensioner is to make sure that the shoulder belts
fit in tightly against the occupant's upper body in certain frontal or side collision(s).
(2) Emergency Fastening Device System
The purpose of the Emergency Fastening Device System is to make sure that the
pelvis belts fit in tightly against the occupant's lower body in certain frontal
or side collision(s).
If the system senses excessive tension on the driver or passenger's seat belt
when the pre-tensioner system activates, the load limiter inside the retractor pre-tensioner
will release some of the pressure on the affected seat belt.
WARNING
- Always wear your seat belt and sit properly in your seat.
- Do not use the seat belt if it is loose or twisted. A loose or twisted
seat belt will not protect you properly in an accident.
- Do not place anything near the buckle. This may adversely affect the
buckle and cause it to function improperly.
- Always replace your pre-tensioners after activation or an accident.
- NEVER inspect, service, repair or replace the pre-tensioners yourself.
This must be done by an authorized HYUNDAI dealer.
- Do not hit the seat belt assemblies.
WARNING
Do not touch the pre-tensioner seat belt assemblies for several minutes after
they have been activated. When the pre-tensioner seat belt mechanism deploys during
a collision, the pre-tensioners become hot and can burn you.

The Pre-Tensioner Seat Belt System consists mainly of the following components.
Their locations are shown in the illustration above:
1. SRS air bag warning light
2. Retractor pre-tensioner
3. SRS control module
4. Emergency Fastening Device System
NOTICE
The sensor that activates the SRS air bag is connected with the pre–tensioner
seat belts. The SRS air bag warning light on the instrument panel will illuminate
for approximately 6 seconds after the Engine Start/Stop button is in the ON position,
and then it should turn off.
If the pre-tensioner is not working properly, the warning light will illuminate
even if the SRS air bag is not malfunctioning. If the warning light does not illuminate,
stays illuminated or illuminates when the vehicle is being driven, have an authorized
HYUNDAI dealer inspect the pre-tensioner seat belts and SRS air bags as soon as
possible.
NOTICE
- Both the driver's and front passenger's pre-tensioner seat belts may
be activated in certain frontal or side collisions or rollovers.
- When the pre-tensioner seat belts are activated, a loud noise may be
heard and fine dust, which may appear to be smoke, may be visible in the passenger
compartment. These are normal operating conditions and are not hazardous.
- Although it is non-toxic, the fine dust may cause skin irritation and
should not be inhaled for prolonged periods. Wash all exposed skin areas thoroughly
after an accident in which the pre-tensioner seat belts were activated.
WARNING
- Fasten your seat belt while sitting properly in an upright position to
maximize the effectiveness of the pre-tensioner seat belt system.
- A pre-tensioner seat belt system is designed to activate only once. Replace
the pretensioner seat belt system, if it was activated in an accident.
This type of seat belt combines the features of both an emergency locking retractor
seat belt and an automatic locking retractor seat belt. Convertible retractor type
seat belts are installed in the rear seat positions to help accommodate the installation
of child restraint systems...
1. Insert the tongue plate (A) into the buckle (A’) until an audible "click"
is heard, indicating the latch is locked. Make sure the belt is not twisted...
Other information:
Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECMTrouble Symptom 3
Trouble symptom
Probable cause
Remedy
The CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 4
Trouble symptom
Probable cause
Remedy
The CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 5
Trouble symptom
Probable cause
Remedy
Cannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 6
Trouble symptom
Probable cause
Remedy
Cannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, short circuit or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 7
Trouble symptom
Probable cause
Remedy
CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 8
Trouble symptom
Probable cause
Remedy
The cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...
C..