Why does my GL550’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 Mercedes-Benz GL550 making engine noise?

Strange under-the-hood noises can point to problems within your Mercedes-Benz GL550 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have 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 GL550 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is 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 use water in my Mercedes-Benz GL550 radiator?

While it’s not recommended, you can use water in your GL550 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 GL550 engine to suddenly stop?

Your GL550 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Mercedes-Benz GL550 engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz GL550 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2009 Mercedes-Benz GL550

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2009 Mercedes-Benz GL550 Trim Options

Select your Mercedes-Benz GL550 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/5.5L

2009 Mercedes-Benz GL550 Repair

Nothing lasts forever. Even your Mercedes-Benz GL550's many parts and pieces. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 2009 Mercedes-Benz GL550 services.

We Know Mercedes-Benz GL550 Engines

Mercedes-Benz GL550 drivers trust that their GL550 will take them near and far. You may have even been thinking about that when you bought it. However, the wear-proof engine has yet to be invented! Sometimes plans go sideways. If the unexpected strikes, you may search the internet frantically for quick and affordable 2009 Mercedes-Benz GL550 engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercedes-Benz GL550 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 2009 Mercedes-Benz GL550 Check Engine Light Is On

An illuminated check engine light on your Mercedes-Benz GL550 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 vehicle's ignition, Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your GL550 issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, essential fluid leaks, or engine misfiring.

2009 GL550 Engine Services

If your 2009 GL550 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 repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for Mercedes-Benz GL550 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — cambelt, oil gasket, ignition coil, or other parts.

Engine Q&A 2009 Mercedes-Benz GL550

Why does my GL550’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 Mercedes-Benz GL550 making engine noise? Strange under-the-hood noises can point to problems within your Mercedes-Benz GL550 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have 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 GL550 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is 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 use water in my Mercedes-Benz GL550 radiator? While it’s not recommended, you can use water in your GL550 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 GL550 engine to suddenly stop? Your GL550 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Mercedes-Benz GL550 engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz GL550 engines. Book an appointment today! We have thousands of locations across the country.