When the tire pressure monitoring system warning indicators are illuminated and warning massage displayed on the cluster LCD display, one or more of your tires is significantly under-inflated. The low tire pressure position telltale light will indicate which tire is significantly under-inflated by illuminating the corresponding position light.
If either telltale illuminates, immediately reduce your speed, avoid hard cornering and anticipate increased stopping distances. You should stop and check your tires as soon as possible. Inflate the tires to the proper pressure as indicated on the vehicle’s placard or tire inflation pressure label located on the driver’s side center pillar outer panel. If you cannot reach a service station or if the tire cannot hold the newly added air, replace the low pressure tire with a spare tire.
If you drive the vehicle for about 10 minutes at speeds above 25 km/h after replaceing the low pressure tire with the spare tire, one of the following will happen:
CAUTION
In winter or cold weather, the low tire pressure telltale may illuminate if the tire pressure was adjusted to the recommended tire inflation pressure in warm weather. It does not mean your TPMS is malfunctioning because the decreased temperature leads to a lowering of tire pressure.
When you drive your vehicle from a warm area to a cold area or from a cold area to a warm area, or the outside temperature is higher or lower, you should check the tire inflation pressure and adjust the tires to the recom
WARNING - Low pressure damage
Significantly low tire pressure makes the vehicle unstable and can contribute to loss of vehicle control and increased braking distances.
Continued driving on low pressure tires can cause the tires to overheat and fail.
Kia Niro 2017 (DE HEV) Service Manual: Lumbar Support Units Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front seat back cover.
(Refer to Body - "Front Seat Back Cover")
3.
Disconnect the lumbar support motor connector (A).
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Kia Niro (DE HEV) Owners Manual: Air bag non-inflation conditions
In certain low-speed collisions the air bags may not deploy. The air bags
are designed not to deploy in such cases because they may not provide benefits
beyond the protection of the seat belts in such collisions.
Air bags are not designed to inflate in rear collisions, because occupants
...