Kia Cee'd: Winter driving / Change to "winter weight" oil if necessary

Kia Cee'd Owners Manual / Driving your vehicle / Winter driving / Change to "winter weight" oil if necessary

In some climates it is recommended that a lower viscosity "winter weight" oil be used during cold weather. See chapter 8 for recommendations. If you aren't sure what weight oil you should use, we recommend that you consult an authorized Kia dealer.

Check battery and cables

Winter puts additional burdens on the battery system. Visually inspect the battery and cables as described in chapter 7. We recommend that the system be checked by an authorized Kia dealer. ...

Check spark plugs and ignition system

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. ...

Other information:

Kia Cee'd Owners Manual: Fuse switch
Always, put the fuse switch at the ON position. If you move the switch to the OFF position, some items such as audio and digital clock must be reset and transmitter (or smart key) may not work properly. When the fuse switch is in the OFF position, a message "Turn on fuse switch" will ...

Kia Cee'd Service Manual: Crankshaft Position Sensor (CKPS) Schematic diagrams
Circuit Diagram [NON-ISG] [ISG] ...