How the Ford Explorer gen 5 2011–2019 Transmission Actually Fails
Overview
I’ve been inside more fifth-gen Explorers than I care to count. On lifts. On jack stands. On tow trucks. This platform changed everything Ford used to do with the Explorer drivetrain, and yeah, you feel it years later.
Starting in 2011, Ford ditched the old longitudinal layout and went transverse. Front-wheel-drive–based. Compact six-speed automatics. A PTU instead of a real transfer case. On paper it saved weight and fuel. In real shops, it created heat, wear, and a long list of repeat customers.
This write-up sticks to the tranny and driveline only. No timing chains. No turbos. No engine drama unless it physically murders the transmission. That’s it.
There are recalls. There are TSBs. Some safety-related, some just quiet admissions that things didn’t age well. We’re not burying those.
Which Transmissions It Uses
No manuals. No CVTs. No fancy dual-clutch stuff. Every US-market 2011–2019 Explorer runs one of three closely related six-speed automatics from Ford’s 6F family. Same bloodline. Same habits.
| Transmission Code | Gear Count | Drive Layout | Engine Pairing | Production Years | Real-World Notes |
|---|---|---|---|---|---|
| 6F35 | 6 | FWD / AWD | 2.0L I4, 2.3L I4 EcoBoost | 2011–2019 | Smallest, hottest-running unit. Least forgiving. |
| 6F50 | 6 | FWD / AWD | 3.5L V6 NA | 2011–2019 | Middle child. Valve bodies wear out like clockwork. |
| 6F55 | 6 | AWD | 3.5L V6 EcoBoost | 2013–2019 | Stronger internals, same hydraulic brain. |
No verified alternatives. Every Explorer in this generation plays from this deck.
Main Failure Patterns
Torque Converter Overheating and Shudder
This one shows up again. And again. And again.
The 6F35 behind the 2.3L EcoBoost loves to cook its torque converter. Ford eventually put it in writing with TSB 20-2271, but long before that, techs already knew the feel. You don’t need a scan tool. Your spine tells you.
- Light throttle. Steady speed.
- Shudder like you’re driving over rumble strips.
- Rough idle in Drive.
- Lazy takeoff, like the thing’s half asleep.
What’s happening is simple and ugly. Heat kills the converter clutch. The friction material sheds. Shavings go everywhere. Valve body. Solenoids. Passages. Once that junk is floating around, the tranny starts eating itself.
I’ve seen plenty where someone slapped a new converter in and sent it. Band-aid fix. Six months later it’s back, flaring shifts, harsh engagements, lunching gears. At that point, you’re pulling it again.
Main Control Valve Body Wear
This isn’t abuse-related. This is design wear.
All three 6F units suffer from valve body bore wear. Doesn’t matter if it’s the 6F35, 6F50, or 6F55. Same story. Pressure leaks past worn aluminum. Solenoids chase ghosts. Shifts get weird.
- 2–3 bang shift.
- 3–4 flare.
- Delayed engagement cold.
- Random neutral moments that scare the hell out of drivers.
In my experience, the window is usually 90,000 to 130,000 miles (145,000–209,000 km). Sometimes sooner. Fluid changes help, but they don’t make the aluminum harder.
PTU Fluid Breakdown and Seal Leaks
The PTU is the quiet villain here.
Ford calls it minimal-service. Lifetime fluid. That’s a joke. The unit sits near the exhaust, cooks its oil, and has no easy drain. By the time anyone smells it, the damage is already started.
- Burnt gear oil smell.
- Seepage at the intermediate shaft seal.
- Growling bearings once it’s too late.
There are multiple Ford bulletins for PTU seal leaks. That alone tells you this wasn’t a one-off. Field observation says the fluid is toast well before 80,000 miles (129,000 km), especially on highway-driven AWD rigs.
Front Halfshaft Support Bracket Fracture
This one earned a recall. And deserved it.
Recall 20V692 (Ford calls it 20S63 internally) covers certain 2014–2016 Explorers. The front halfshaft support bracket can crack. When it lets go, bad things happen.
- Grinding.
- Banging.
- Violent vibration.
- Loss of drive.
- In some cases, no Park.
This is not wear. This is a safety failure. VIN check is mandatory. I don’t care how clean the truck looks.
Typical Repair Costs
Alright. Let’s talk money. Because this is where reality hits.
| Repair Type | Parts (USD) | Labor (USD) | Total (USD) | Basis |
|---|---|---|---|---|
| Torque converter + valve body service | $1,200–$2,000 | $1,500–$2,200 | $2,700–$4,200 | Service Bay Benchmark |
| Reman transmission replacement | $4,500–$5,200 | $1,100–$1,600 | $5,600–$6,800 | Industry Estimate |
| PTU seal repair | $150–$300 | $400–$700 | $550–$1,000 | Field Observation |
| PTU replacement | $2,400–$2,800 | $700–$1,000 | $3,100–$3,800 | Industry Estimate |
| Halfshaft bracket recall | $0 | $0 | $0 | Recall Remedy |
Best and Worst Years
| Year Range | Powertrain | Transmission | Regulatory Exposure | Main Risk | Overall Risk |
|---|---|---|---|---|---|
| 2011–2012 | 3.5L V6 NA | 6F50 | Low | Valve body wear | Medium |
| 2013 | 3.5L EcoBoost AWD | 6F55 | Low | Heat load | Medium |
| 2014–2016 | Mixed engines | All | Recall 20V692 | Driveline hardware | High |
| 2017–2019 | 2.3L EcoBoost AWD | 6F35 | TSB 20-2271 | Converter failure | High |
Warning Signs & Early Detection
- Shudder at cruise.
- Hard shifts out of nowhere.
- Delay going into Drive.
- Burnt PTU smell.
- Front-end banging under throttle.
A good scan that shows trans temps and adaptive values helps. Fluid analysis helps more. Ignoring it helps nobody.
When to Walk Away
- Shudder that survived a converter swap.
- PTU noise plus visible leaks.
- Open recall with no record of repair.
- “Rebuilt transmission” with zero paperwork.
At used-market prices, one grenaded drivetrain wipes out the deal.
Ownership Reality
| OEM Message | What Actually Happens | Result |
|---|---|---|
| PTU fluid doesn’t need service | Fluid cooks and breaks down | PTU failure |
| No early transmission service | Valve body wears faster | Expensive teardown |
| Warranty to 60k miles (97,000 km) | Failures show up later | Owner pays |
Lawsuits, Complaints & Regulatory History
No finalized class-action settlement targets these transmissions directly. What does exist is complaint clustering. Loss of propulsion. Shudder. Noise. Enough to trigger a recall and multiple TSBs.
Regulators stepped in where safety was involved. Long-term durability? That stayed the owner’s problem.
Bottom Line
I’ve watched these drivetrains age in real time. Some survive with care. Some don’t. None are forgiving.
If the service history is solid, recalls are closed, fluids were changed early, you’ve got a fighting chance. Skip those steps, and this platform turns into a ticking time bomb with a nice interior.
