Inspect your spark plugs as described in chapter 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way.
Change to "winter weight" oil if
necessary
To keep locks from freezing: Cooling System Capacity and Specification - 2.5L, Hybrid Electric Vehicle (HEV)/Plug-In
Hybrid Electric Vehicle (PHEV)
Use coolant that meets the defined
specification.
If you do not use coolant that meets the
defined specification, it could result in:
Component damage that your vehicle
warranty does not cover.
Reduced vehicle performance.
Capacities
Materials
...
Kia Cee'd JD Service Manual: Temperature Control Actuator Description and operation
Description
The heater unit includes mode control actuator and temperature control actuator.
The temperature control actuator is located at the heater unit. It regulates
the temperature by the procedure as follows. Signal from the control unit adjusts
the position of the ...