Why does my S550’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 S550 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Mercedes-Benz S550 engine noises bad?

Strange under-the-hood noises can point to problems within your Mercedes-Benz S550 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. 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 a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz S550 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. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to my Mercedes-Benz S550 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 S550 engine to suddenly stop?

If your S550 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 Mercedes-Benz S550 engines?

For Mercedes-Benz S550 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.

2009 Mercedes-Benz S550 Engine Repair

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2009 Mercedes-Benz S550 Trim Options

Select your Mercedes-Benz S550 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz S550 parts will get older and change.

V8/5.5L

2009 Mercedes-Benz S550 Repair

Nothing lasts forever. Even your Mercedes-Benz S550's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2009 Mercedes-Benz S550 repairs.

We Care for Mercedes-Benz S550 Engines

Mercedes-Benz S550 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. If the unexpected strikes, you may search the internet frantically for quick and affordable 2009 Mercedes-Benz S550 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 Mercedes-Benz S550 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.

Check Engine Light on 2009 Mercedes-Benz S550

If your S550 check engine light is on, it’s time to get it looked at. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Potential causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your S550 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. Other signs your Mercedes-Benz S550 engine needs some TLC are burning smells, or engine misfiring.

Mercedes-Benz S550 Engine Repair

If your 2009 S550 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. 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 want to provide you with the information you need to make an informed engine repair decision. By choosing Firestone Complete Auto Care for S550 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing belt, engine oil seal, ignition coil, or a different component.

2009 Mercedes-Benz S550 Engine Q&A

Why does my S550’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 S550 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Mercedes-Benz S550 engine noises bad? Strange under-the-hood noises can point to problems within your Mercedes-Benz S550 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. 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 a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz S550 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. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to my Mercedes-Benz S550 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 S550 engine to suddenly stop? If your S550 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 Mercedes-Benz S550 engines? For Mercedes-Benz S550 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.