

When the LDWS is not working properly, the warning light will illuminate and the warning message will come on for a few second. After the message disappears, the master warning light will illuminate.
We recommend that the system be checked by an authorized Kia dealer.
Lane departure warning system (LDWS)
The LDWS does not operate
whenKia Cee'd JD Service Manual: Input Speed Sensor 1 Repair procedures
Inspection
Refer to DTC code "P2765, P2766" Input Shaft Speed Sensor.
Removal
1.
Turn off the ignition switch and then disconnect the battery (-) cable.
2.
Remove the under cover.
3.
...
Kia Cee'd JD Owners Manual: Non-operational conditions of
rear parking assist system
The rear parking assist system may
not operate properly when:
1. Moisture is frozen to the sensor. (It will
operate normally when the moisture
has been cleared.)
2. The sensor is covered with foreign
matter, such as snow or water, or the
sensor cover is blocked. (It will operate
normal ...