Remove and replace the engine oil pan, including draining oil, lowering the subframe, removing the oil pan, cleaning surfaces, installing a new gasket, and refilling with oil.

Warnings

Tools required

Parts

• Oil pan gasket × 1 — Use OEM specification
• Oil drain plug crush washer × 1 — Toyota 90430-12031 or equivalent
• Engine oil filter × 1 — Use OEM specification
• RTV gasket maker (Toyota FIPG or equivalent) × 1 — Use OEM specification

Fluids

• Toyota Genuine 0W-20 — 5 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely (minimum 2 hours after operation)
3. Disconnect negative battery terminal
4. Raise vehicle and support securely on jack stands at all four corners
5. Remove engine under cover and splash shields
6. Place oil drain pan beneath engine

Procedure

1. 1

   Drain engine oil
   Remove the oil drain plug from the oil pan and allow all engine oil to drain completely into the drain pan. This may take 10-15 minutes. Remove the oil filter to ensure complete drainage.
2. 2

   Remove front exhaust pipe
   Disconnect the front exhaust pipe from the exhaust manifold and from the center pipe. Remove the exhaust pipe hanger bolts and lower the front exhaust section to provide clearance for oil pan removal. Support with wire if necessary.
3. 3

   Install engine support fixture
   Install an engine support bar across the engine bay or use an appropriate engine support fixture. Attach to the engine lifting points and take up slight tension to support the engine weight. Verify the engine is securely supported before proceeding.
   ⚠The engine must be properly supported throughout this procedure. Failure to do so may result in engine damage or personal injury.
4. 4

   Remove front subframe mounting bolts
   Locate the four subframe mounting bolts (two per side). Place a floor jack under the center of the subframe with a wood block to distribute load. Remove the subframe mounting bolts while supporting the subframe with the jack.
   Torque spec

   Mounting Bolts47 Nm (35 lb-ft)
5. 5

   Lower the subframe
   Carefully lower the floor jack to drop the front subframe approximately 2-3 inches. This provides necessary clearance to remove the oil pan. Do not fully remove the subframe. Ensure all brake lines, steering components, and wiring have sufficient slack.
   ⚠Lower the subframe slowly and check for any tight wiring, hoses, or lines that may become strained.
6. 6

   Disconnect oil level sensor
   Locate the oil level sensor on the side of the oil pan. Disconnect the electrical connector by pressing the release tab and pulling straight out. Note the connector orientation for reinstallation.
7. 7

   Remove oil pan bolts
   Remove all oil pan mounting bolts in a crisscross pattern starting from the outer edges working inward. There are approximately 16-18 bolts around the perimeter. Keep bolts organized as some may be different lengths.
   Torque spec

   Oil Pan Bolts12 Nm (9 lb-ft)
8. 8

   Separate and remove oil pan
   Carefully tap the oil pan with a rubber mallet to break the gasket seal. Work around the perimeter evenly. Once loose, carefully lower the oil pan while maneuvering around the subframe. Remove the oil pickup tube if necessary for clearance.
   ⚠Do not pry between the oil pan and engine block with metal tools as this can damage sealing surfaces.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
9. 9

   Clean all sealing surfaces
   Thoroughly clean the oil pan gasket surface and engine block mating surface. Remove all old gasket material, RTV silicone, and oil residue using a plastic scraper. Clean surfaces with brake parts cleaner and wipe dry with a lint-free cloth. Inspect for cracks, warping, or damage.
   ℹ️Sealing surfaces must be completely clean and free of debris for proper gasket seal. Any remaining material will cause oil leaks.
10. 10

    Install new oil pan gasket
    Position the new oil pan gasket on the oil pan, aligning all bolt holes. Apply a small bead of RTV silicone gasket maker at the junction points where the engine block meets the timing cover and rear main seal housing (two locations). Follow RTV manufacturer's cure time instructions.
    ℹ️RTV must be applied sparingly only at specified junction points. Excess RTV can break off and clog oil passages.
11. 11

    Install oil pickup tube
    If removed, install the oil pump pickup tube with a new O-ring. Ensure the tube is fully seated in the oil pump and torque the mounting bolts to specification.
    Torque spec

    Oil Pump Pickup Tube12 Nm (9 lb-ft)
12. 12

    Install oil pan
    Carefully raise the oil pan into position, maneuvering around the subframe. Align all bolt holes and hand-thread all oil pan bolts before tightening any. Tighten bolts in a crisscross sequence from the center outward to the specified torque. Work in multiple passes, gradually increasing torque.
    ⚠Follow proper tightening sequence to avoid warping the oil pan flange which will cause leaks.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
13. 13

    Reconnect oil level sensor
    Reconnect the oil level sensor electrical connector, ensuring it clicks into place securely.
    Torque spec

    Sensor Bolts11 Nm (8 lb-ft)
14. 14

    Raise and secure subframe
    Using the floor jack, carefully raise the subframe back to its original position. Install all four subframe mounting bolts and torque to the higher specification (47 Nm/35 lb-ft) as these are critical structural fasteners.
    ⚠Subframe mounting bolts are critical safety components. Ensure proper torque specification is achieved.
    Torque spec

    Mounting Bolts47 Nm (35 lb-ft)
15. 15

    Reinstall exhaust and fill with oil
    Reinstall the front exhaust pipe with new gaskets as needed. Install the oil drain plug with a new crush washer and torque to specification. Install a new oil filter. Remove the engine support fixture. Fill the engine with 5.0 quarts of Toyota Genuine 0W-20 engine oil. Reinstall under covers and splash shields.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)

Reassembly

1. Reconnect negative battery terminal
2. Lower vehicle from jack stands
3. Start engine and verify oil pressure light extinguishes within 5 seconds
4. Allow engine to idle for 5 minutes and inspect oil pan for leaks
5. Turn off engine, wait 5 minutes, then check oil level and top off if necessary

Verification

• Check for oil leaks around the oil pan perimeter with engine at operating temperature
• Verify no oil spots on ground after test drive
• Confirm oil level is at the full mark on dipstick when checked on level ground with cold engine
• Verify oil pressure warning light functions normally (illuminates with key on/engine off, extinguishes when engine starts)
• Check that all subframe bolts are properly torqued and no suspension noises are present during test drive

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