When should Mercedes-Benz S420 spark plugs be replaced?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.

What do I do if I see a pool of liquid under my Mercedes-Benz S420?

Don't ignore puddles of fluid under your Mercedes-Benz S420. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

Are some driving habits better for my Mercedes-Benz S420 engine than others?

Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.

Where can I have a Mercedes-Benz S420 tune-up done?

At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz S420 service, maintenance, or repairs, our technicians can get the job done.

How often do Mercedes-Benz S420 fuel injectors need to be cleaned?

The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.

Who can I go to for Mercedes-Benz S420 tune-ups?

Visit your local Firestone Complete Auto Care for your Mercedes-Benz S420 tune-up. Make an appointment online and view our latest offers to save big.

Engine Tune-Up Service for Your 1996 Mercedes-Benz S420

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Schedule an Appointment for Your Mercedes-Benz S420 Tune-Up

Tune in to tune up. Listen to your S420 and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

Schedule an Appointment

Enhance Mercedes-Benz S420 Performance with a Tune-Up

Is your engine overdue for a tune-up? If you usually wait until your car has an issue to take it in for service, now is the time to work on that habit, especially if you want your 1996 Mercedes-Benz S420’s engine to last for a long time. Routine engine tune-ups can bring power back to your S420. Tune-ups help your engine start smoothly and run efficiently, so you can enjoy improved fuel economy and lower emissions. When you take your car for regular engine tune-ups as recommended by Mercedes-Benz, you invest in your S420's long-term health and engine performance.

Routine Engine Tune-Up Service for Your Mercedes-Benz S420

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercedes-Benz S420 engine tune-up services. One option is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. A second service option replaces the air and fuel filter in your S420. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your S420. The result? Restored fuel system performance. Consider this when choosing a tune-up service for your S420: your vehicle’s maintenance record and mileage can determine which service is best. If you’re not sure what services are the best fit for your car, let us help! Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where to Get a Mercedes-Benz S420 Tune-Up

Schedule your next 1996 S420 engine tune-up service at Firestone Complete Auto Care. Consult your vehicle’s recommended service schedule from Mercedes-Benz, or make a service appointment if you notice any of these symptoms from your engine: decreased gas mileage, "rough" idling or stalling when stopped, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

Common Engine Tune-Up Q&A For 1996 Mercedes-Benz S420s

When should Mercedes-Benz S420 spark plugs be replaced? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.
What do I do if I see a pool of liquid under my Mercedes-Benz S420? Don't ignore puddles of fluid under your Mercedes-Benz S420. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
Are some driving habits better for my Mercedes-Benz S420 engine than others? Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.
Where can I have a Mercedes-Benz S420 tune-up done? At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz S420 service, maintenance, or repairs, our technicians can get the job done.
How often do Mercedes-Benz S420 fuel injectors need to be cleaned? The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.
Who can I go to for Mercedes-Benz S420 tune-ups? Visit your local Firestone Complete Auto Care for your Mercedes-Benz S420 tune-up. Make an appointment online and view our latest offers to save big.

1996 Mercedes-Benz S420 Maintenance

Stay ahead of any potential issues with your Mercedes-Benz S420 so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repairs on Your 1996 Mercedes-Benz S420

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Mercedes-Benz S420, we’re here to help. Check out more info below about 1996 Mercedes-Benz S420 repairs.