Symptoms of a Cooling System Failure

June 22, 2021

A close up of a car engine with a pink coolant tank. | Lex Brodies

 

Every time you start your car, the engine heats up from the combustion processes. Sometimes, it can reach extreme temperatures. As a result, every car is built with a cooling system to prevent your engine from overheating. The heating system functions by eliminating excess heat from the engine. It also sustains an optimum operating temperature inside the vehicle and restores the appropriate temperature to the engine. The cooling system is thus vital to assure you of a dependable ride from Point A to Point B.

 

The cooling system comprises many parts that work together -- Radiator , Fan , Thermostat , Water Pump , and Freeze Plug are only several among others. If any of these pieces malfunction, it will bring about significant danger to the engine. The good thing is that it is relatively simple to detect trouble within the cooling system. Some of the symptoms that indicate a failing cooling system include:

 

Smoke Arising From the Hood

If you notice smoke coming from your car hood, please pull over on the side of the road and inspect the components beneath the hood. You can add coolant or water to bring down the temperature as you wait to get to our auto repair shop. Failure to take action might cause damage such as a blown head gasket and other serious issues.

 

Rising Temperature Gauge

Most of the time, this is a telling sign that indicates cooling system failure. The needle will rise to the red zone (sometimes paired with the "H" symbol for Hot) on your dashboard.

 

Low Coolant Level

If the coolant level runs below what is recommended in the vehicle's manual, it may mean you have a faulty cooling system. As a result, there is a potential leak of coolant that requires mechanical intervention.

 

White Exhaust Smoke

An overheating vehicle can occasionally produce white fumes. The white smoke might be a result of a coolant burn in the engine's combustion chamber. However, it is enough reason to fret since it could signify a crack in the engine block.

 

Proper maintenance of the cooling system is necessary to ensure you do not get stranded on the road, among other nuisances. If you need your coolant inspected for any repairs, LexBrodies Honolulu is here to assist you.

What’s the Difference Between a Basic and Full Synthetic Oil Change? | LexBrodies
July 25, 2025
LexBrodies, with 4 locations in Hawaii, breaks down the differences between basic and full synthetic oil changes to help you make the best choice.
What Is the Fixed Forever Brake Repair at Lex Brodie’s? | LexBrodies
July 13, 2025
LexBrodie’s in Hawaii shares details about their Fixed Forever Brake Repair and how it helps you save on long-term brake service.
What to Do When I See Oil Under My Car | LexBrodies
July 11, 2025
LexBrodies in Hawaii explains what to do if you notice oil under your car and how to identify the source.
What’s Causing That Loud Humming Sound From My Tires? | LexBrodies Honolulu
July 7, 2025
LexBrodies in Hawaii explains why your tires might be making a loud humming noise. Learn how to diagnose and fix tire-related sound issues.
Island Life, Island Driving: How to Maintain Your Car in Honolulu | LexBrodies Honolulu
July 3, 2025
LexBrodies Honolulu in Honolulu, HI, shares expert tips on maintaining your car in island conditions. Keep your vehicle running strong in the unique Hawaiian climate.
How Can I Prevent My Car from Overheating? | LexBrodies Honolulu
February 28, 2025
LexBrodies Honolulu in Hawaii explains how to prevent your car from overheating. Learn essential tips to keep your engine cool and running efficiently.
A close up of a car battery being charged with jumper cables. | Lex Brodies
January 31, 2025
If you’ve ever been stuck with a car that won’t start, you know how important a reliable battery is. It’s the heart of your vehicle’s electrical system, providing the energy to get your engine running and power all the accessories we often take for granted. But just how long can you expect a car battery to last before it’s time for a replacement?
A man is balancing a tire on a machine. | Lex Brodies
December 20, 2024
Your car’s tires are the only parts of your vehicle that touch the road, making them essential for your safety and performance. Yet, it’s easy to take these hardworking components for granted. Whether you’re commuting daily, heading on a long road trip, or just running errands around town, your tires play a key role in your car’s handling, braking, and fuel efficiency. To keep your vehicle performing at its best, understanding and staying on top of essential tire services is a must.
A diagram of which fluids need to be changed in a car. | Lex Brodies
November 29, 2024
Taking care of a car goes beyond just the engine and exterior. Many owners don’t realize that various essential fluids run through their vehicles, each maintaining a smooth, safe ride. When one of these fluids is low or becomes contaminated, it can impact the vehicle's performance, safety, and longevity. Understanding which fluids need attention and how often can save you from costly repairs. So, let’s explore the six fundamental fluids every car owner should know about and why they’re so essential for a healthy, well-functioning vehicle.
A black and white photo of a car engine and suspension. | Lex Brodies
October 31, 2024
If you've ever driven a car that feels more like a bouncy castle than a smooth ride, there's a good chance your shock absorbers are on their way out. Shock absorbers are a vital part of your vehicle’s suspension system, designed to control the impact and rebound movement of your car. But what happens when they wear out? Are there real safety concerns involved?