Ford Explorer 2015 – Reliability, Maintenance, And DIY Performance
The 2015 Ford Explorer is a versatile fifth-generation SUV known for its comfortable ride and strong towing capabilities. This guide provides an expert deep-dive into common mechanical issues, essential maintenance schedules, and practical upgrades for owners and DIYers.
Finding a vehicle that balances family hauling with weekend trail capability is a tough task for any driver. You need something that feels planted on the highway but doesn’t shy away from a muddy trailhead or a heavy boat trailer.
The ford explorer 2015 model remains a staple in the used SUV market because it offers exactly that balance. In this article, I will walk you through the technical nuances, hidden trouble spots, and performance tweaks that will keep your rig on the road for another decade.
We will cover everything from the notorious internal water pump issues to the best ways to set up your suspension for light off-roading. Whether you are a seasoned wrench-turner or a first-time owner, these insights will save you time and money at the shop.
Understanding the Powertrain Options
Before you dive under the hood, you need to know exactly what you are working with. The 2015 lineup offered three distinct engines, each with its own set of maintenance requirements and performance characteristics.
The 3.5L Ti-VCT V6 (Duratec)
This is the workhorse engine found in most base and XLT trims. It produces 290 horsepower and is generally considered the most reliable option for long-term ownership. It uses a naturally aspirated design, meaning fewer complex turbo components to fail.
The 2.0L EcoBoost I-4
If fuel economy was your priority, you likely have the 2.0L turbo. While it offers decent torque, it is strictly front-wheel drive (FWD) in this year. It is a great commuter engine but lacks the towing capacity of its larger siblings.
The 3.5L EcoBoost V6
Found in the Sport and Platinum trims, this twin-turbo powerhouse turns the Explorer into a sleeper performance SUV. With 365 horsepower, it provides effortless passing power. However, it requires much stricter oil change intervals to protect the turbochargers.
Essential Maintenance for Your ford explorer 2015
Keeping up with the factory service schedule is the bare minimum. As an experienced technician, I recommend a more aggressive approach to fluid changes to avoid the common “lifetime fluid” traps set by manufacturers.
For the ford explorer 2015, the Power Transfer Unit (PTU) is a critical component that often gets overlooked. If you have an Intelligent 4WD model, the PTU sits near the exhaust and gets extremely hot, breaking down the gear oil quickly.
Change your PTU fluid every 30,000 miles, even if the manual says otherwise. Use a high-quality 75W-140 synthetic gear oil. This simple step can prevent a catastrophic failure that usually costs upwards of $2,000 to repair at a dealership.
Engine oil should be changed every 5,000 miles using a full synthetic 5W-20 or 5W-30, depending on your specific engine. Always use a Motorcraft filter, as they contain the correct anti-drainback valves designed for Ford engines.
- Engine Oil: 5,000 to 7,500 miles (Full Synthetic).
- Transmission Fluid: Drain and fill every 45,000 miles.
- Coolant: Flush every 5 years or 100,000 miles using Orange OAT coolant.
- Brake Fluid: Test for moisture every 2 years and flush if necessary.
Common Mechanical Pitfalls and How to Spot Them
Every vehicle has its “Achilles heel,” and the 2015 Explorer is no exception. Knowing what to look for can help you catch a problem before it leaves you stranded on the side of the road or deep in the woods.
The Internal Water Pump Issue
On the 3.5L Duratec and 3.5L EcoBoost engines, the water pump is driven by the timing chain inside the engine. If the pump seal fails, it can leak coolant directly into the oil pan. This creates a “milky” sludge that can destroy engine bearings in minutes.
Check the “weep hole” located behind the alternator on the side of the engine block. If you see traces of dried coolant or a slow drip, replace the pump immediately. This is a labor-intensive job, but it is much cheaper than a total engine replacement.
EPAS (Electric Power Assist Steering) Failure
Some owners have reported a sudden loss of power steering. This is often caused by a fault in the steering rack electronics. If your steering feels “notchy” or you hear a grinding noise when turning, have the codes scanned for steering angle sensor errors.
Rear Suspension Toe Links
The rear toe links on this generation are prone to wearing out or snapping under high stress. If you notice the rear of the car “wandering” over bumps or uneven tire wear, check these links. Ford has issued recalls for this in the past, so check your VIN with a local dealer.
DIY Brake Service: A Step-by-Step Guide
Changing the brakes on this SUV is a straightforward task for a weekend DIYer. The 2015 model uses a standard disc brake setup on all four corners. You will need a 14mm socket for the caliper bolts and an 18mm socket for the bracket bolts.
- Secure the Vehicle: Jack up the car and use heavy-duty jack stands. Never work under a car supported only by a floor jack.
- Remove the Caliper: Unbolt the two slider pin bolts. Use a bungee cord to hang the caliper from the coil spring so you don’t stress the rubber brake line.
- Inspect the Rotors: If you feel a vibration when braking, your rotors are likely warped. Replace them in pairs to ensure even braking performance.
- Compress the Piston: Use a C-clamp or a brake spreader tool. Be sure to open the master cylinder cap under the hood to relieve pressure.
- Grease the Pins: Use high-temperature silicone grease on the slider pins. This prevents the “frozen caliper” syndrome common in rust-belt states.
Always perform a bedding procedure after installing new pads. This involves several controlled stops from 40 mph to 10 mph to transfer a layer of friction material to the rotor surface. It significantly improves stopping power and reduces noise.
Performance and Off-Road Upgrades
While the ford explorer 2015 is a unibody crossover rather than a body-on-frame truck, it can still handle moderate off-road trails. With the right modifications, you can transform it into a capable overlanding rig for camping and exploring.
Start with a 2-inch leveling kit. This provides better ground clearance for the front air dam, which is notoriously low. Removing the plastic lower air dam entirely is a common mod for off-roaders, though it may slightly decrease highway fuel economy.
Tires are the most important upgrade. Switch to an All-Terrain (A/T) tire like the BFGoodrich KO2 or the Falken Wildpeak A/T3W. These provide much better traction on loose dirt and gravel while maintaining a relatively quiet ride on the pavement.
For those with the 3.5L EcoBoost, a simple ECU tune can unlock massive amounts of torque. Companies like Cobb or SCT offer handheld programmers that can add 50+ horsepower safely. Just remember that more power means you must be even more diligent with your maintenance intervals.
Safe Towing Practices for the 2015 Explorer
If you plan on towing, make sure you know your limits. The V6 models are typically rated for 5,000 lbs when equipped with the factory Class III towing package. This includes a heavy-duty radiator and an engine oil cooler.
Always use a weight-distribution hitch if your trailer is over 3,000 lbs. This helps keep the front wheels planted and prevents the “squat” that ruins handling. If your SUV doesn’t have the factory tow package, consider adding an auxiliary transmission cooler to prevent overheating.
Check your tire pressures before every trip. Towing puts extra load on the rear tires, so inflating them to the “max load” PSI listed on the tire sidewall (not the door jamb) is often necessary for stability. Ensure your trailer lights are functioning and your safety chains are crossed in an “X” pattern.
Buyer’s Guide: What to Look for in a Used 2015 Explorer
If you are in the market for a ford explorer 2015, there are specific things you must check during the test drive. Don’t just look at the shiny paint; look for the mechanical health markers that indicate a well-cared-for vehicle.
Check the service history for PTU and transmission fluid changes. If the car has 100,000 miles and has never had these fluids changed, you might be looking at a ticking time bomb. Ask the seller if the water pump has been replaced, as this is a major selling point.
During the test drive, turn the steering wheel lock-to-lock while stopped. Listen for any whining or clicking. Accelerate hard to see if the transmission shifts smoothly or if there is any “shudder” between gears. A shudder often points to a worn torque converter or old fluid.
- Inspect the Roof Rails: Check for leaks around the mounting points, which can ruin the headliner.
- Check the Sync System: Ensure the infotainment screen is responsive, as the APIM modules can fail.
- Look for Rust: Check the leading edge of the aluminum hood, which is known for paint bubbling and corrosion.
Frequently Asked Questions About ford explorer 2015
What is the most common problem with a 2015 Ford Explorer?
The most significant issue is the internal water pump on the 3.5L engines. If it fails, it can leak coolant into the oil, potentially destroying the engine. Regular inspections of the weep hole are mandatory for owners.
Is the 2015 Ford Explorer good in snow?
Yes, especially models equipped with the Intelligent 4WD system and Terrain Management. Using the “Snow/Grass” setting optimizes the traction control and throttle response for slippery conditions. Good winter tires make it even better.
How long will a 2015 Ford Explorer last?
With meticulous maintenance, these SUVs can easily reach 200,000 miles. The key is changing the “lifetime” fluids (PTU and Transmission) and addressing the water pump before it fails internally.
Does the 2015 Explorer have a timing belt or chain?
All engine options for this year use a timing chain. Unlike a belt, the chain is designed to last the life of the engine, provided you perform regular oil changes to keep the tensioners lubricated.
Final Thoughts for the Careful DIYer
The ford explorer 2015 is a robust vehicle that rewards owners who take a proactive approach to maintenance. By ignoring the “lifetime fluid” myths and keeping an eye on the cooling system, you can enjoy a reliable, high-performing SUV for years.
Remember to always prioritize safety. Use the right tools, never rush a repair, and don’t be afraid to call a professional if a job like the internal water pump feels out of your comfort zone. Taking care of your Explorer ensures it will be ready for the next family road trip or off-road adventure. Stay safe, keep your hands greasy, and enjoy the drive!
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