Ford Mustang 2017 Convertible

The 2017 Ford Mustang convertible offers a perfect blend of modern S550 performance and the classic thrill of open-air driving. Keeping this pony car in peak condition requires specialized knowledge of its unique top mechanism, chassis reinforcements, and engine-specific maintenance needs.

Owning a performance car is a dream for many, but maintaining a modern classic like the S550 generation requires more than just a quick car wash. You want your ride to stay sharp, sound aggressive, and handle the corners with precision for years to come.

In this guide, I will show you exactly how to care for your vehicle, from protecting the fabric top to optimizing the 5.0L or EcoBoost engines. We will dive into the technical details that keep your car out of the shop and on the road.

By the end of this article, you will have a professional-grade roadmap for DIY maintenance and performance upgrades. Whether you are a seasoned mechanic or a weekend enthusiast, these steps will ensure your driving experience remains top-tier.

Table of Contents

The ford mustang 2017 convertible represents the final year of the pre-facelift S550 design, making it a highly sought-after model for enthusiasts. It features the independent rear suspension (IRS) that revolutionized Mustang handling, providing a much smoother ride than previous live-axle generations.

Unlike the fastback, the convertible variant includes specific structural reinforcements to compensate for the lack of a fixed roof. These include a unique K-brace under the chassis and additional shock tower bracing to maintain rigidity during spirited driving.

Choosing this model means balancing performance with the complexities of a motorized soft-top system. Understanding these nuances is the first step toward becoming a master of your own garage and ensuring your ford mustang 2017 convertible holds its value.

The S550 Platform Evolution

The 2017 model year benefited from three years of production refinements, fixing many of the early 2015 “teething” issues. Ford improved the Sync 3 infotainment system this year, adding standard Apple CarPlay and Android Auto compatibility.

Mechanically, the chassis was tuned to be more forgiving for daily driving while retaining its track-focused DNA. The multi-link rear suspension allows each wheel to react independently to road imperfections, which is vital for a convertible’s structural integrity.

Weight Distribution and Dynamics

Convertibles are naturally heavier than their coupe counterparts due to the hydraulic motors and structural steel added to the floor pan. This extra weight sits lower in the car, which can actually help with traction but may require different spring rates for optimal handling.

When you are tuning the suspension, always look for parts specifically labeled for the convertible trim. Fastback springs may cause the rear of your ford mustang 2017 convertible to sag slightly due to the weight of the folding top assembly.

Maintaining the Convertible Top Mechanism and Fabric

The most critical part of owning a drop-top is the soft top maintenance, as a neglected roof can lead to expensive leaks and mechanical failures. The 2017 model uses an electromechanical system that is generally reliable but requires periodic lubrication of the pivot points.

Start by inspecting the fabric for any signs of “pilling” or thinning near the folding creases. Use a dedicated fabric convertible top cleaner and a soft-bristle horsehair brush to gently lift dirt without damaging the waterproof fibers.

Avoid automated car washes with high-pressure jets or abrasive brushes, as these can tear the stitching or force water past the weatherstripping seals. Hand washing is the only way to guarantee the longevity of your roof’s appearance and function.

Waterproofing and UV Protection

Every six months, you should apply a fabric protectant spray to help the top bead water and resist UV damage. Sunlight is the primary enemy of the black or tan fabric, causing it to fade and become brittle over time.

Before applying a protectant, ensure the top is completely dry and parked in a shaded area. Mask off the glass and paint with painter’s tape and plastic sheeting to prevent overspray from staining your clear coat or windows.

Lubricating the Hinges and Seals

The folding mechanism has several moving joints that can squeak or bind if they become dry. Use a lithium-based grease or a dry silicone lubricant on the metal hinges to keep the operation smooth and quiet.

Don’t forget the rubber weatherstripping where the top meets the windshield and side windows. Applying a silicone-based dressing keeps the rubber soft, preventing the dreaded wind whistles and water leaks during heavy rain.

Maximizing Engine Reliability and Power

Whether you have the 2.3L EcoBoost or the legendary 5.0L Coyote V8, engine health is the heart of your ford mustang 2017 convertible experience. Proper oil selection and frequent change intervals are the most effective ways to prevent long-term wear.

For the 5.0L V8, many owners report a “typewriter tick” at idle, which is often harmless but can be minimized by using a high-quality full synthetic 5W-20 oil. Always use a Motorcraft FL-500S filter or a high-flow equivalent to ensure consistent oil pressure.

The EcoBoost engine requires even more care due to the heat generated by the turbocharger. I recommend a low-speed pre-ignition (LSPI) resistant oil to protect the pistons during high-load, low-RPM situations common in modern turbocharged cars.

The Importance of Spark Plug Gapping

If you notice a slight stumble or hesitation under acceleration, check your spark plugs. The 2.3L EcoBoost is particularly sensitive to spark plug gap, which should ideally be set to 0.028 inches for tuned engines or 0.030 for stock setups.

Use a torque wrench when installing new plugs to avoid stripping the threads in the aluminum cylinder head. For the 5.0L Coyote, the interval is longer, but checking them every 30,000 miles ensures you are getting maximum fuel economy.

Cooling System Maintenance

Convertibles often see more “cruising” time in hot weather, which puts a strain on the cooling system. Ensure your orange Motorcraft coolant is at the correct level and look for any signs of crusty residue around the expansion tank.

The plastic coolant tanks on the S550 are known to develop hairline cracks over time. Upgrading to an aluminum expansion tank is a popular DIY project that adds both reliability and a cleaner look to your engine bay.

Addressing Common S550 Chassis and Interior Issues

The interior of the ford mustang 2017 convertible is a great place to be, but it isn’t without its quirks. Because the cabin is exposed to the elements more often, the leather and plastics require extra attention to prevent cracking.

One common complaint is a vibration in the steering wheel at highway speeds, often referred to as the “S550 shimmy.” This is frequently caused by driveshaft imbalance or uneven tire wear, which is exacerbated by the convertible’s slightly less rigid frame.

If you experience this, start by having a road-force balance performed on your tires. If the vibration persists, inspecting the rear subframe bushings for excessive play is the next logical step for a DIY mechanic.

Sync 3 Infotainment Troubleshooting

If your screen becomes unresponsive or fails to connect to your phone, a master reset usually solves the problem. Go into the settings menu and select “General,” then “Master Reset” to clear the cache and restore functionality.

Keep your software updated by connecting the car to your home Wi-Fi. These updates often include firmware patches that improve Bluetooth stability and navigation accuracy, making your road trips much more enjoyable.

Managing Cabin Air Quality

Since convertibles suck in more dust and pollen when the top is down, your cabin air filter will clog faster than in a coupe. This filter is located behind the glovebox and is a simple 10-minute DIY swap.

Replacing this filter every 10,000 miles keeps your A/C blowing cold and prevents that “musty” smell that can develop in convertible interiors. Use a carbon-activated filter to better neutralize outdoor odors and exhaust fumes.

Essential Tools for the Weekend Mustang Mechanic

To work on your ford mustang 2017 convertible effectively, you need a specific set of tools that go beyond a basic screwdriver set. Modern Fords use a mix of metric bolts and Torx fasteners throughout the interior and engine bay.

A high-quality 3/8-inch drive socket set with extensions will cover 90% of your maintenance needs. Specifically, you will need 8mm, 10mm, 13mm, and 15mm sockets, as these are the most common sizes found on the S550 chassis.

Invest in a plastic trim removal tool kit to avoid scratching the painted surfaces or breaking the delicate clips inside the cabin. These are essential for accessing the cabin filter or upgrading the speakers without causing permanent damage.

Diagnostic Tools and Software

For deeper troubleshooting, an OBD2 scanner is mandatory. I recommend an ELM327-compatible adapter paired with FORScan software, which allows you to access dealer-level diagnostics and change hidden vehicle settings.

With FORScan, you can enable features like “Global Window Open” or recalibrate the speedometer after changing tire sizes. It is a powerful tool that gives you total control over the electronic modules in your ford mustang 2017 convertible.

Safety Equipment for DIYers

Never work under your car supported only by a hydraulic jack. Always use heavy-duty jack stands placed on the factory-designated pinch weld points to ensure the car remains stable while you are underneath.

When working on the convertible top, be extremely careful of pinch points. Never reach into the mechanism while it is moving, and always have a second person nearby to monitor the process if you are testing the hydraulic lines.

Upgrading Suspension for a Sharper Driving Experience

While the stock suspension is comfortable, many owners find the ford mustang 2017 convertible feels a bit “floaty” in the corners. This is due to the softer bushings and springs used to minimize cowl shake.

The best first upgrade is a set of stop-the-hop subframe alignment inserts. These small metal pieces fill the gaps in the factory rubber bushings, significantly reducing wheel hop during hard acceleration and improving rear-end stability.

Adding a larger rear sway bar can also help dial out understeer, making the car feel more neutral and eager to turn. Just be careful not to go too stiff, as this can increase vibrations felt through the floorboards.

Lowering Springs and Alignment

A modest 1-inch drop using progressive rate lowering springs can transform the stance of your Mustang without ruining the ride quality. Ensure the springs are rated for the convertible’s extra rear weight to maintain a level look.

After any suspension work, a professional four-wheel alignment is required. Ask the technician to aim for the “Performance Street” specs, which usually involve a bit more negative camber to help the car grip through the turns.

Frequently Asked Questions About the ford mustang 2017 convertible

How do I manually close the convertible top if the motor fails?

In the event of a power failure, there is a bypass valve located near the hydraulic pump (usually behind the rear seat or in the trunk). Opening this valve releases the pressure, allowing you to pull the top closed by hand and latch it manually.

What is the best way to clean the rear glass window?

The 2017 model features a tempered glass rear window with integrated defrost heating elements. Use a standard ammonia-free glass cleaner and a microfiber towel; avoid using scrapers or harsh chemicals that could damage the heater grids.

Does the 2017 Mustang convertible have a spare tire?

Most models come with a tire inflator kit instead of a physical spare to save weight and space. If you prefer a real wheel, you can purchase a “spare tire delete” kit that fits in the trunk well, but verify it clears your brake calipers first.

How often should I change the transmission fluid?

For the 6R80 automatic or the MT82 manual transmission, a fluid change every 50,000 to 60,000 miles is recommended for spirited driving. This is much sooner than the manual suggests but ensures the internal clutches and gears stay cool and lubricated.

Conclusion: Enjoying Your Open-Top Journey

Owning a ford mustang 2017 convertible is about more than just getting from point A to point B; it is about the experience of the drive. By following these maintenance steps, you are protecting a piece of American automotive history.

Remember to prioritize safety and precision in every DIY project you undertake. Whether you are scrubbing the soft top or bolting on a new exhaust, taking your time always leads to better results and a more reliable vehicle.

Keep your eyes on the road, your top down when the sun is out, and your engine running smooth. Stay safe and enjoy the ride!

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Robert Lozano

Robert Lozano is the founder of Engine Needs. With a passion for engines and automotive technology, he provides expert reviews, guides, and advice to help drivers make smarter vehicle decisions.

Ford Mustang 2017 Convertible – Pro Maintenance And Performance