Kia Optima Hybrid Owner's Manual Quiz
Body Electrical System

Troubleshooting

In this manual: Body Electrical System
General Information — 4Engine Mechanical System — 50Engine Electrical System — 20Emission Control System — 30Engine Control System/Fuel System — 84Automatic Transmission — 98Drive Shaft and Axle — 15Suspension System — 36Steering — 12Restraints — 50Brake System — 38Body (Interior and Exterior) — 54Body Electrical System — 233Heating, Ventilation, and Air Conditioning — 57
~2min read

Troubleshooting

Symptom Possible Cause Remedy
Tachometer inoperative Fuse group blown (10 A) Check for a short circuit and replace the fuse.
CAN Line Malfunction Check the EMS.
Tachometer malfunction Check the tachometer.
Faulty wiring or ground Repair as necessary.
Fuel gauge does not operate Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Fuel level sensor malfunction Check the sensor.
Fuel sender malfunction Check the fuel sender
Faulty wiring or ground Repair as necessary.
Low fuel warning lamp does not come on Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Bulb burned out Replace the bulb.
Fuel sender malfunction Check the fuel sender
Faulty wiring or ground Repair as necessary.
Water temperature sensor does not work Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Coolant temperature sensor malfunction Check the sensor.
Coolant temperature sensor malfunction Check the sender.
CAN Line Malfunction Check the EMS.
Faulty wiring or ground Repair as necessary.
Oil pressure warning lamp does not illuminate Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Bulb burned out Replace the bulb.
Oil pressure sensor malfunction Check the switch.
Faulty wiring or ground Repair as necessary.
Parking brake warning lamp does not illuminate Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Bulb burned out Replace the bulb.
Brake fluid level sensor malfunction Check the switch.
Parking brake switch malfunction Check the switch.
Faulty wiring or ground Repair as necessary.
CAN Line Malfunction Check the TCS/ABS (EBD)
Check the Smart Junction Box (SJB)
(Parking Brake / Brake Fluid Switch)
Open door warning lamp and trunk warning lamp do not illuminate Memory fuse blown (15 A) Check for a short circuit and replace the fuse.
Bulb burned out Replace the bulb.
CAN Line Malfunction Check the Smart Junction Box (SJB)
Door switch malfunction Check the switch.
Faulty wiring or ground Repair as necessary.
Speedometer Does Not Work Vehicle speed sensor is faulty Check the vehicle speed sensor (M/T)
CAN Line Malfunction Check the EMS (A/T)
Seat belt warning lamp does not come on Fuse group blown (10 A) Check for a short circuit and replace the fuse.
Bulb burned out Replace the bulb.
CAN Line Malfunction Check the engine control module
Seat belt switch malfunction Check the switch.
Faulty wiring or ground Repair as necessary.

Test yourself

A quick Kia Optima Hybrid Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.