2009–2011 Mercury Mariner Ford 6F35 Transmission Repair
The 2009–2011 Mercury Mariner with the 2.5L four-cylinder uses the 6F35 six-speed. It's the Mercury version of the Escape; V6 and hybrid Mariners are not covered here.
Transmission at a glance
Year-specific notes
- 2011 — 2011 was the final Mariner model year.
How to confirm your transmission
- The Safety Compliance label on the driver door jamb lists the transmission code; a VIN decode confirms the 6F35 and its calibration.
- Mariner parts availability can differ from the Escape, so we source using the Mariner VIN.
- The ID tag on the transaxle case gives the build level we use when sourcing hard parts.
Common Ford 6F35 failure areas in the Mariner
Clutch wear or pressure-control problems; on the Mariner 2.5L we check adaptive data and fluid condition first.
Valve-body wear, a sticking solenoid or low fluid are the common causes.
Usually torque converter clutch related; converter slip data confirms it.
Diagnostic considerations
- Scan PCM/TCM codes and review shift solenoid and pressure data.
- Check fluid level through the check plug at operating temperature — there is no conventional dipstick.
- Road test with live clutch and converter slip data.
Repair or rebuild?
Because Mercury ended production in 2011, we consider the vehicle's overall condition and parts availability when discussing repair versus rebuild.
Closely related vehicles
Request a quote for your Mercury Mariner
Frequently asked questions
Can Escape parts be used on a Mariner?
Many drivetrain parts are shared, but we confirm by VIN before ordering.
Should I repair or rebuild the 6F35 in my Mercury Mariner?
It depends on what failed. Solenoid, valve body and software faults can often be repaired; burnt clutches or metal in the pan usually mean a rebuild. We diagnose first and explain the options.
Do you give prices over the phone?
We don't quote before diagnosis because repair scope varies. Call 602-725-6800 or request a quote and we'll explain the next step. MBN Auto Diesel is at 6602 W Myrtle Ave, Glendale, AZ 85301.