When should Mercedes-Benz GLS550 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 should I do if I see leaks under my GLS550?

Don't ignore puddles of fluid under your Mercedes-Benz GLS550. 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 GLS550 engine than others?

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

Where can I have a Mercedes-Benz GLS550 tune-up done?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz GLS550s.

How often do Mercedes-Benz GLS550 fuel injectors need to be cleaned?

The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercedes-Benz owner’s manual for exact guidelines.

Who offers Mercedes-Benz GLS550 tune-ups?

When your GLS550 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

2017 Mercedes-Benz GLS550 Tune-Up & Engine Service

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Schedule Your Mercedes-Benz GLS550 Tune-Up Service Appointment

If your GLS550 is acting strange or making new noises, it could be engine tune-up time. Don’t wait until small problems get bigger. Make an appointment now.

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Enhance Mercedes-Benz GLS550 Performance with a Tune-Up

Is it time for an engine tune-up? If you tend to ignore your car until something goes wrong, now is the time to work on that habit, especially if you want your 2017 Mercedes-Benz GLS550’s engine to last for a long time. Routine engine tune-ups can bring power back to your GLS550. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you follow the guidelines specified by Mercedes-Benz for your vehicle’s tune-up schedule, you can rest assured you’re investing in your GLS550’s long-term engine performance.

Engine Tune-Up for Mercedes-Benz GLS550

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercedes-Benz GLS550 engine tune-up services. One option is the standard Firestone Tune-Up. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. Another service option pays special attention to the filters in your GLS550. Specifically, we replace the fuel filter and air filter. Our third service is a thorough cleaning of the fuel system. During this type of tune-up, we use a three-step process to get rid of harmful varnish, dirt, and carbon deposit buildup in your GLS550’s fuel injectors, throttle body, and throttle plate. This can improve your fuel system’s performance (and therefore, your engine’s performance). Keep in mind that your GLS550's mileage and maintenance history can uniquely impact its tune-up needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

Where to Get a Mercedes-Benz GLS550 Tune-Up

Come to Firestone Complete Auto Care for your next 2017 GLS550 engine tune-up. 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, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

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

Questions About 2017 Mercedes-Benz GLS550 Engine Tune-Ups

When should Mercedes-Benz GLS550 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 should I do if I see leaks under my GLS550? Don't ignore puddles of fluid under your Mercedes-Benz GLS550. 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 GLS550 engine than others? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.
Where can I have a Mercedes-Benz GLS550 tune-up done? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz GLS550s.
How often do Mercedes-Benz GLS550 fuel injectors need to be cleaned? The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercedes-Benz owner’s manual for exact guidelines.
Who offers Mercedes-Benz GLS550 tune-ups? When your GLS550 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Maintenance for Your 2017 Mercedes-Benz GLS550

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your Mercedes-Benz GLS550.

2017 Mercedes-Benz GLS550 Repair

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 GLS550, we’re here to help. Check out more info below about 2017 Mercedes-Benz GLS550 repairs.