Seat Warmers
Front Seat Warmers (if equipped)
Seat warmers are provided to warm the seats in cold weather.
WARNING
Seat heaters can cause SERIOUS BURNS even at low temperatures, especially with prolonged use.
Passengers should be able to feel whether the seat is becoming too warm so that they can turn it off if necessary.
Persons who cannot detect changes in temperature or pain in the skin should use special caution, especially the following occupants:
- Infants, children, elderly persons, disabled persons, or outpatients.
- Persons with sensitive skin or those who sunburn easily.
- Fatigued persons.
- Persons under the influence of alcohol.
- Persons taking medications that may cause drowsiness.
WARNING
NEVER place anything that insulates against heat, such as a blanket or seat cushion, on the seat while the seat warmer is on. This may cause the seat to overheat, which may result in burns or damage to the seat.
NOTICE
To avoid damage to the seat warmers and seats:
- Never use solvents such as paint thinner, benzene, alcohol, or gasoline to clean the seats.
- Do not place heavy or sharp objects on heated seats.
- Do not replace the seat covering. This may damage the seat warmer.

While the vehicle is in ready mode (
, press either switch to heat the driver's or front passenger's seat.
In mild weather, or when seat warmers are not needed, keep the switches in the OFF position.
- Each time you press the switch, the seat heat setting changes in the following order:

- If the switch is pressed for more than 1.5 seconds, the seat warmer turns off.
- The seat warmer defaults to the OFF position each time the engine is started/stopped. The button is in the ON position.
Information
When the seat warmer switch is in the ON position, the seat warmer system automatically turns on or off depending on the seat temperature.
Rear Seat Heaters

While the vehicle is in ready mode (
) mode, press either switch to heat the rear seat.
In mild weather, or when seat warmers are not needed, keep the switches in the OFF position.
Each time you press the switch, the seat temperature setting changes as follows:

The seat warmer defaults to the OFF position each time the engine Start/Stop button is turned on. The button is in the ON position.
Information
When the seat warmer switch is in the ON position, the seat warmer system automatically turns on or off depending on the seat temperature.
Battery Cooling Duct

■ Hybrid Vehicle

■ Plug-in Hybrid Vehicle
The high-voltage battery cooling duct is located on the left side of the rear seat. The cooling duct cools the high-voltage battery.
If the high-voltage battery cooling duct is blocked, the high-voltage battery may overheat. Do not block the cooling duct with other objects.
Test yourself
A quick Hyundai Ioniq quiz: every answer comes with an explanation and a link to the manual page.