Why does the check engine light come on when I start my GLS450?

It’s usually normal for your check engine light to turn on upon ignition. This is just your GLS450 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Mercedes-Benz GLS450 engine noises bad?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz GLS450. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz GLS450 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my Mercedes-Benz GLS450 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 could cause my GLS450 engine to suddenly stop?

There are different reasons your GLS450 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who fixes Mercedes-Benz GLS450 engines?

Your local Firestone Complete Auto Care offers Mercedes-Benz GLS450 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 2017 Mercedes-Benz GLS450

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2017 Mercedes-Benz GLS450 Trim Options

Select your Mercedes-Benz GLS450 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz GLS450 parts will get older and change.

V6/3.0L

2017 Mercedes-Benz GLS450 Repair

Nothing lasts forever. Even your Mercedes-Benz GLS450’s engine parts and components will change. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 2017 Mercedes-Benz GLS450.

We Know Mercedes-Benz GLS450 Engines

Mercedes-Benz GLS450 engines are known for their reliability. You may have even been thinking about that when you bought it. 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 2017 Mercedes-Benz 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 Mercedes-Benz GLS450 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2017 Mercedes-Benz GLS450

As soon as your GLS450 check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your car’s ignition, Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your GLS450 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. rattling sounds, burning smells, or misfiring.

Engine Repairs for Your 2017 GLS450

When your Mercedes-Benz GLS450 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, we'll let 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 2017 GLS450 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — cambelt, valve guide seal, sensors, or other parts.

Engine Q&A 2017 Mercedes-Benz GLS450

Why does the check engine light come on when I start my GLS450? It’s usually normal for your check engine light to turn on upon ignition. This is just your GLS450 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Mercedes-Benz GLS450 engine noises bad? Strange engine sounds can be a sign something’s off in your Mercedes-Benz GLS450. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz GLS450 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my Mercedes-Benz GLS450 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 could cause my GLS450 engine to suddenly stop? There are different reasons your GLS450 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who fixes Mercedes-Benz GLS450 engines? Your local Firestone Complete Auto Care offers Mercedes-Benz GLS450 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!