Kia Optima low AC refrigerant symptoms, how to recharge
The refrigerant is the magic compound running through the AC system of Kia Optima that makes it possible to blow super chilled air in the blistering heat. What happens when …
Kia Optima dirty cabin air filter symptoms, when to replace
The cabin air filter, also known as the pollen filter or microfilter, is responsible for filtering the air that the passengers breathe in Kia Optima. What happens when this filter …
Kia Optima bad alternator symptoms, how to check voltage
The alternator is the power station of Kia Optima that converts mechanical energy from the engine to electricity. It not only powers all the electrical components in the vehicle, but …
Kia Optima bad wheel speed sensor symptoms – how to diagnose
Kia Optima has a speed sensor at each wheel hub which measures the speed of the respective wheel and transmits the information to the ABS control unit. These sensors are …
Kia Optima window bounce back when closing – causes and how to fix it
The auto power windows in Kia Optima has pinch or jam protection feature which automatically reopens the window if it detects an obstacle. If the window bounce back when closing …
Kia Optima auto windows not working, how to reset
Your Kia Optima may be equipped with auto power windows feature, which automatically opens and closes the windows with one press of corresponding switch. If a window doesn’t fully close …
Kia Optima battery light is on – causes and how to reset
When the red battery light comes on in the dashboard of Kia Optima, it indicates a malfunction in the charging system. This can happen due to a number of reasons …
Kia Optima ABS light is on – causes and how to reset
The ABS, short for anti-lock braking system, is a safety feature in Kia Optima which prevents the wheels from locking up during braking. This makes it possible to maintain steerability …
Kia Optima dead battery symptoms, causes, and how to jump start
Kia Optima needs a healthy 12 volt battery for normal operation of the vehicle. It not only supplies high electrical current required to start the engine, but also helps power …
Kia Optima dashboard lights flicker and won’t start – causes and how to fix it
Flickering dashboard lights in Kia Optima when attempting to start the engine might seem like a major malfunction has occurred, but in the majority of cases it’s not a serious …
Kia Optima makes clicking noise and won’t start – causes and how to fix it
Kia Optima making clicking noise when attempting to start the engine is a fairly common problem when it comes to no-crank starting issues, and can be easily fixed in the …
Kia Optima makes sloshing water sound – causes and how to fix it
Sloshing sounds in the cabin of Kia Optima should not be ignored. If the noise is due to accumulation of water somewhere, it can lead to unwanted bacteria growth like …
Kia Optima AC smells bad – causes and diagnosis
If the AC in your Kia Optima smells like a pile of dirty socks, it could be due to unwanted bacteria growth like mold or mildew. Inhaling these unpleasant musty …
Kia Optima AC not blowing hard enough – weak airflow causes
If the air conditioning system in Kia Optima is not blowing hard enough or has weak airflow, it not only negatively affects the cooling performance, but can also increase the …
Kia Optima AC blowing hot air – causes and how to fix it
Driving your Kia Optima in hot weather with a broken air conditioning system is not only uncomfortable, it can also be dangerous for your health when sweltering heat builds up …
Kia Optima AC not cooling – causes and diagnosis
Driving your Kia Optima in warmer temperatures with a malfunctioning air conditioning system can quickly become a nuisance when sweltering heat builds up in the cabin. There are several causes …
Kia Optima burning smell causes and how to fix it
Burning smell in Kia Optima could be harmless or something very serious and a potential fire hazard. Therefore it is recommended to urgently find and eliminate the cause of the …
Kia Optima AC blower motor not working – causes and diagnosis
The blower motor is the central component of the air conditioning system in Kia Optima, responsible for blowing hot or cold air through the AC vents. If the blower motor …
Kia Optima bad wheel bearings symptoms, causes and diagnosis
Wheel bearings in Kia Optima are one of the most crucial and stressed components. They cause the wheels to turn easily and at the same time absorb high radial and …
Kia Optima steering wheel vibration causes and diagnosis
Driving your Kia Optima with a shaking steering wheel is not only irritating, it can also be dangerous. Such vibrations are symptoms of an underlying problem with your Optima, which …
Kia Optima bad ignition coils symptoms, causes, and diagnosis
The ignition coils are part of the ignition system in Kia Optima, responsible for amplifying the relatively low battery voltage from 12V to a high voltage of tens of thousands …
Kia Optima bad spark plugs symptoms, causes, and diagnosis
The spark plugs in Kia Optima are responsible for generating sparks that ignites the air/fuel mixture in the combustion chambers of the engine. Driving your Optima with bad spark plugs …
Kia Optima bad O2 sensor symptoms, causes, and diagnosis
The O2 sensor in Kia Optima monitors the level of oxygen in the engine’s exhaust gases and reports the data to the control unit that continuously adjusts the air to …
Kia Optima clogged catalytic converter symptoms, causes, and diagnosis
The catalytic converter is part of the exhaust system in Kia Optima and its main purpose is to convert exhaust gases like carbon monoxide and hydrocarbons that are harmful to …
Kia Optima bad mass air flow sensor (MAF) symptoms and causes
The mass air flow sensor or MAF sensor is part of the intake system in Kia Optima responsible for measuring the amount of air entering the engine. Driving your Optima …