Transmission Fluid Change

This procedure drains and refills the automatic transmission fluid in a 2011-2014 Ford F-150 with 5.0L V8 engine, including filter replacement if applicable.

Warnings

Tools required

Parts

• Transmission pan gasket × 1 — Ford BC3Z-7A248-A or equivalent
• Transmission filter (if equipped with replaceable filter) × 1 — Verify transmission type - some models non-serviceable

Fluids

• Motorcraft MERCON LV ATF — 11 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Place wheel chocks behind rear wheels
3. Allow engine and transmission to cool completely (minimum 2 hours after operation)
4. Raise front of vehicle and secure on jack stands at frame rails
5. Verify transmission is 6R80 automatic - check VIN decoder or transmission identification tag
6. Locate transmission fluid dipstick or fill plug on passenger side of transmission

Procedure

1. 1

   Access transmission pan
   Position drain pan under transmission. The transmission pan is located on the underside of the transmission case. Remove any skid plates or protective covers that may obstruct access to the pan bolts.
2. 2

   Loosen transmission pan bolts
   Beginning at the rear corners, loosen (but do not remove) all transmission pan bolts in a criss-cross pattern. Leave the front bolts slightly tight to allow the pan to tilt and drain from the rear edge first. This controls fluid flow.
   ⚠Fluid will begin draining as pan is loosened. Ensure drain pan is properly positioned.
3. 3

   Drain transmission fluid
   Carefully remove rear pan bolts completely, allowing the rear of the pan to drop and fluid to drain. Once flow slows, remove remaining bolts and lower pan completely. Be prepared for additional fluid release. Allow pan to drain fully into drain pan.
4. 4

   Remove and inspect filter
   If transmission is equipped with a replaceable filter (some 6R80 units have internal non-serviceable filters), remove filter by pulling straight down. Inspect old filter for metal debris or excessive contamination. Note the orientation of the filter seal before removal.
   ℹ️Excessive metal debris indicates internal transmission wear requiring professional inspection.
5. 5

   Clean pan and mating surface
   Remove all old gasket material from transmission pan and transmission case mating surface using plastic scraper. Clean surfaces thoroughly with clean shop rags. Inspect pan for metal shavings or debris - small amounts are normal. Clean pan interior completely and inspect magnet for excessive material.
6. 6

   Install new filter
   If applicable, install new transmission filter by pressing firmly upward into position until it seats completely. Ensure filter seal is properly positioned and filter is secure. Some filters have a snap-fit design that will click when properly seated.
7. 7

   Install new gasket and pan
   Position new gasket on transmission pan, ensuring all bolt holes align. Carefully position pan against transmission case, ensuring gasket remains properly aligned. Start all pan bolts by hand to prevent cross-threading.
8. 8

   Torque pan bolts
   Tighten all transmission pan bolts in a criss-cross pattern starting from the center and working outward. Perform torque sequence in multiple passes, first to 6 Nm, then to final specification.
   Torque spec

   Pan Bolts20 Nm (15 lb-ft)
9. 9

   Refill transmission
   Lower vehicle to ground. Locate transmission dipstick tube (passenger side of engine bay) or fill plug. Using fluid pump or funnel with long hose, add 5-6 quarts of Motorcraft MERCON LV ATF initially. Start engine and allow to idle in Park.
   ⚠Do not overfill transmission. Add remaining fluid gradually while checking level.
10. 10

    Complete fluid fill and check level
    With engine at idle and transmission in Park, check fluid level on dipstick (should be in COLD range). Add additional fluid in 1-quart increments until level reaches proper mark. Shift through all gear positions (P-R-N-D), holding each for 3-5 seconds, then return to Park. Recheck level and add fluid as needed to reach COLD mark.
11. 11

    Perform warm-up cycle
    Drive vehicle normally for 10-15 minutes to bring transmission to operating temperature (160-200°F). Park on level surface, keep engine running, and recheck fluid level with transmission in Park. Level should now be in HOT range on dipstick. Add fluid if necessary to bring to proper level.

Reassembly

1. Reinstall any skid plates or protective covers removed during procedure
2. Verify no fluid leaks are present around transmission pan after warm-up cycle
3. Dispose of used transmission fluid at appropriate recycling facility

Verification

• Check transmission fluid level with engine at operating temperature - level should be in HOT range on dipstick
• Verify no fluid leaks around transmission pan gasket
• Test drive vehicle and confirm smooth shifting through all gears
• Recheck fluid level after test drive and adjust if necessary
• Monitor for leaks during first 100 miles of operation

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle