Here are some important points if you decide to pull a trailer:

M/T : Manual transaxle
A/T : Automatic transaxle
DCT : Dual clutch transmission
Maintenance when trailer towing
Weight of the trailerKia Cee'd JD Owners Manual: Instant fuel economy (L/100 km or MPG)
This mode calculates the instant fuel consumption
during the last few seconds.
✽ NOTICE
If the vehicle is not on level ground or
the battery power has been interrupted,
the “Distance to empty” function
may not operate correctly.
The trip computer may not register
additi ...
Kia Cee'd JD Service Manual: ICM (Integrated Circuit Module) Relay Box Repair procedures
Inspection
1.
The ICM (Integrated Circuit Module) can be diagnosed by using the GDS
more quickly.
The BCM communicates with the GDS and then reads the relay value and
drives the actuator.
2.
To diagnose the ICM relay ...