The BSD indicator on the outer side view mirror may not illuminate properly when:
Kia Cee'd JD Service Manual: Components and components location
Components Location
1. PCV valve
2. Canister
3. Purge control solenoid valve
(PCSV)
4. Catalytic converter (WCC/UCC)
1. PCV valve
2. Canister
...
Kia Cee'd JD Service Manual: Rear Transverse Trim Components and components location
Component Location
1. Rear transverse trim
...