Why does the check engine light come on when I start my Prius?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Prius testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Toyota Prius engine noises bad?

Strange under-the-hood noises can point to problems within your Toyota Prius engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Toyota Prius engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I add water to my Toyota Prius radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause a Prius engine to suddenly stop?

Reasons your Prius car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who fixes Toyota Prius engines?

Your local Firestone Complete Auto Care has you covered with expert Prius engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 2004 Toyota Prius

Learn about

2004 Toyota Prius Trim Options

Select your Toyota Prius trim level to learn more about Toyota-recommended engine repair. Use the following chart to find information.

L4/1.5L

Repairs for Your 2004 Toyota Prius

Nothing stays the same forever. Even your Toyota Prius's many parts and pieces. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2004 Toyota Prius repairs.

We’re Trained to Care for Toyota Prius Engines

Toyota Prius drivers trust that their Prius will take them near and far. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. When they do, you might find yourself searching for 2004 Toyota Prius engine repair or replacement parts. That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know Toyota Prius engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 2004 Toyota Prius

An illuminated check engine light on your Toyota Prius is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Potential causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your Prius issues diagnosed and our expert techs will get the root of the problem. rattling sounds, essential fluid leaks, or misfiring.

Toyota Prius Engine Repair

When your Toyota Prius engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 2004 Prius engine repairs and you can feel good knowing that we only use Toyota-compliant replacement parts such as the timing belt, valve guide seal, fuses, or other parts.

Questions About 2004 Toyota Prius Engines

Why does the check engine light come on when I start my Prius? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Prius testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Toyota Prius engine noises bad? Strange under-the-hood noises can point to problems within your Toyota Prius engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Toyota Prius engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I add water to my Toyota Prius radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause a Prius engine to suddenly stop? Reasons your Prius car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who fixes Toyota Prius engines? Your local Firestone Complete Auto Care has you covered with expert Prius engine repair. Schedule an appointment today and see us at one of our thousands of locations.