Why does the check engine light come on when I start my Q45?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Q45 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Infiniti Q45 engine noises bad?

Strange engine sounds can be a sign something’s off in your Infiniti Q45. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Infiniti Q45 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in my Infiniti Q45 radiator?

While it’s not recommended, you can use water in your Q45 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

Why did my Q45 engine suddenly stop?

If your Q45 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who repairs Infiniti Q45 engines?

Your local Firestone Complete Auto Care offers Infiniti Q45 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Reliable Repairs for 2003 Infiniti Q45 Engines

Learn about

2003 Infiniti Q45 Trim Options

Select your Infiniti Q45 trim level to learn more about Infiniti-recommended engine repair. Use the following chart to find information.

V8/4.5L

Repairs for Your 2003 Infiniti Q45

Nothing lasts forever. Even your Infiniti Q45's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 2003 Infiniti Q45 repairs.

We Care for Infiniti Q45 Engines

The Infiniti Q45 is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Sometimes plans go sideways. If they do, you’ll have to find a dependable 2003 Infiniti service center — quick! That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Infiniti Q45 engine will be in good hands. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2003 Infiniti Q45

An illuminated check engine light on your Infiniti Q45 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 fuel injection, Causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your Q45 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine rattling, burning smells, or engine misfiring.

2003 Q45 Engine Services

If your 2003 Infiniti Q45 needs engine repair, 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 repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for Q45 engine repairs and you can drive easy knowing that we use Infiniti-approved parts and fluids — serpentine belt, motor oil seal, fuses, or other parts.

Questions About 2003 Infiniti Q45 Engines

Why does the check engine light come on when I start my Q45? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Q45 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Infiniti Q45 engine noises bad? Strange engine sounds can be a sign something’s off in your Infiniti Q45. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Infiniti Q45 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in my Infiniti Q45 radiator? While it’s not recommended, you can use water in your Q45 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
Why did my Q45 engine suddenly stop? If your Q45 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who repairs Infiniti Q45 engines? Your local Firestone Complete Auto Care offers Infiniti Q45 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!