Why does my Mariner’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your Mariner firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my Mercury Mariner making engine noise?

Strange under-the-hood noises can point to problems within your Mercury Mariner engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Mercury engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercury Mariner engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Mercury Mariner radiator?

While it’s not recommended, you can use water in your Mariner 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.

What could cause my Mariner engine to suddenly stop?

If your Mariner 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 Mercury Mariner engines?

For Mercury Mariner engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

2010 Mercury Mariner Engine Repair

Learn about

2010 Mercury Mariner Trim Options

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

L4/2.5L

V6/3.0L

L4/2.5L

V6/3.0L

Repairs for Your 2010 Mercury Mariner

Stuff wears out. Even your Mercury Mariner's many parts and pieces. When something breaks or fails, we’re ready to help. Select a service or repair below to learn more about what we can do for your 2010 Mercury Mariner.

We Care for Mercury Mariner Engines

The Mercury Mariner is respected for its reliability. You probably thought about that when you got it. Even so, pieces and parts can break down over time. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 2010 Mercury Mariner engine repairs. That's when it's time to head to Firestone Complete Auto Care. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mercury Mariner engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2010 Mercury Mariner Check Engine Light Is On

An illuminated check engine light on your Mercury Mariner is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your or emission control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your Mariner in for an on-board diagnostic check and our expert techs will get the root of the problem. Other signs it's time for Mercury Mariner engine service might include essential fluid leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2010 Mariner

When your Mercury Mariner 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. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for Mariner engine repairs and you can feel confident knowing that we use Mercury-approved parts and components like the timing chain or belt, engine oil seal, ignition coil, or a different component.

Engine Q&A 2010 Mercury Mariner

Why does my Mariner’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. It’s just your Mariner firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my Mercury Mariner making engine noise? Strange under-the-hood noises can point to problems within your Mercury Mariner engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Mercury engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercury Mariner engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Mercury Mariner radiator? While it’s not recommended, you can use water in your Mariner 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.
What could cause my Mariner engine to suddenly stop? If your Mariner 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 Mercury Mariner engines? For Mercury Mariner engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.