Why does my 500SL’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. It’s just your 500SL firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Mercedes-Benz 500SL engine noises bad?

Strange under-the-hood noises can point to problems within your Mercedes-Benz 500SL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Mercedes-Benz 500SL engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still 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.

Can I add water to my Mercedes-Benz 500SL radiator?

While it’s not recommended, you can use water in your 500SL 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 500SL engine to suddenly stop?

Your 500SL car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs Mercedes-Benz 500SL engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz 500SL engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1991 Mercedes-Benz 500SL Engines

Learn about

1991 Mercedes-Benz 500SL Trim Options

Select your Mercedes-Benz 500SL trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/5.0L

Mercedes-Benz 500SL Repairs and Services

Nothing lasts forever. Even your Mercedes-Benz 500SL’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 1991 Mercedes-Benz 500SL repairs.

We’re Trained to Care for Mercedes-Benz 500SL Engines

The Mercedes-Benz 500SL is respected for its reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Mercedes-Benz 500SL 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 500SL 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 1991 Mercedes-Benz 500SL

As soon as your 500SL 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 fuel, Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your 500SL in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs your Mercedes-Benz 500SL engine needs some TLC are oil leaks, or engine misfiring.

Mercedes-Benz 500SL Engine Repair

When your Mercedes-Benz 500SL engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We never do any work without your sign-off. If a service can wait, we’ll make sure you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 1991 500SL engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing chain or belt, valve guide seal, sensors, or other parts.

Engine Q&A 1991 Mercedes-Benz 500SL

Why does my 500SL’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. It’s just your 500SL firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Mercedes-Benz 500SL engine noises bad? Strange under-the-hood noises can point to problems within your Mercedes-Benz 500SL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Mercedes-Benz 500SL engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still 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.
Can I add water to my Mercedes-Benz 500SL radiator? While it’s not recommended, you can use water in your 500SL 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 500SL engine to suddenly stop? Your 500SL car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs Mercedes-Benz 500SL engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz 500SL engines. Book an appointment today! We have thousands of locations across the country.