Why does my GLS450’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 just your GLS450 testing its circuits. The light should turn off in a bit, but come see us 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 need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Mercedes-Benz GLS450 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 put water in my Mercedes-Benz GLS450 radiator?

It’s not recommended you put water in your GLS450 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

Why did my GLS450 engine suddenly stop?

Reasons your GLS450 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who repairs Mercedes-Benz GLS450 engines?

For Mercedes-Benz GLS450 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.

Engine Repairs for Your 2024 Mercedes-Benz GLS450

Learn about

2024 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.

2024 Mercedes-Benz GLS450 Repair

Nothing lasts forever. Even your Mercedes-Benz GLS450’s engine parts and components will change. We’re here to help when something stops working. Click on a repair below to learn more about 2024 Mercedes-Benz GLS450 repairs.

We Care for 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 wrong on the road. When they do, you might find yourself searching for 2024 Mercedes-Benz GLS450 engine repair or replacement parts. 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. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2024 Mercedes-Benz GLS450 Check Engine Light Is On

As soon as your GLS450 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 or emission control system that won’t go away on its own. Causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your GLS450 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2024 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 service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. 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 GLS450 engine repairs and you can feel confident knowing that we use Mercedes-Benz-approved parts and components like the timing chain or belt, valve guide seal, sensors, or another part.

Engine Q&A 2024 Mercedes-Benz GLS450

Why does my GLS450’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 just your GLS450 testing its circuits. The light should turn off in a bit, but come see us 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 need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Mercedes-Benz GLS450 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 put water in my Mercedes-Benz GLS450 radiator? It’s not recommended you put water in your GLS450 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
Why did my GLS450 engine suddenly stop? Reasons your GLS450 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Mercedes-Benz GLS450 engines? For Mercedes-Benz GLS450 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.