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

It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Mercury Mariner making engine noise?

Unusual noises can signal a problem with your Mercury Mariner engine. 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 could be a sign that something is wrong with your brakes — not the engine.

What could damage my Mercury Mariner engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Is it okay to put water in my Mercury Mariner 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 the engine in my Mariner to suddenly stop?

Your Mariner car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs Mercury Mariner engines?

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

Engine Repairs for Your 2009 Mercury Mariner

Learn about

2009 Mercury Mariner Trim Options

Select your Mercury Mariner trim level to learn more about Mercury-recommended engine repair. Even Mercury Mariner parts will get older and change.

L4/2.5L

V6/3.0L

L4/2.5L

V6/3.0L

Mercury Mariner Repairs and Services

Nothing lasts forever. 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 2009 Mercury Mariner.

We’re Trained to Care for Mercury Mariner Engines

Mercury Mariner engines are known for their reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go sideways sometimes. If they do, you’ll have to find a dependable 2009 Mercury service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercury Mariner engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2009 Mercury Mariner

As soon as your Mariner check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your vehicle's ignition, Causes may include a faulty oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your Mariner 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.

Engine Repairs for Your 2009 Mariner

When your Mercury Mariner engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. 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 2009 Mariner engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the timing chain or belt, engine oil seal, sensors, or another part.

Questions About 2009 Mercury Mariner Engines

Why does my Mariner’s check engine light come on when I start it? It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Mercury Mariner making engine noise? Unusual noises can signal a problem with your Mercury Mariner engine. 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 could be a sign that something is wrong with your brakes — not the engine.
What could damage my Mercury Mariner engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Is it okay to put water in my Mercury Mariner 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 the engine in my Mariner to suddenly stop? Your Mariner car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs Mercury Mariner engines? Your local Firestone Complete Auto Care has you covered with expert Mariner engine repair. Schedule an appointment today and see us at one of our thousands of locations.