Checks, in order
- Fluid level and conditionCheck the level with the engine warm, following the procedure in the manual. Fluid should be red and clean; dark or burnt-smelling fluid means service is overdue.easy $ · under about $50
- Drain and fillA drain and fill with the correct Toyota fluid is cheap insurance. Do not use a high-pressure flush machine on a high-mileage unit.medium $$ · about $50 to $500
- Check for stored codesRead for converter clutch or solenoid codes, such as P0741, which show lockup trouble. Note when the shudder happens, usually light throttle at 35 to 50 mph.easy $ · under about $50
- Ask a dealer about software updatesAsk a Toyota dealer whether any transmission software updates or bulletins apply to your VIN before paying for parts.easy $ · under about $50
- Converter or internal repairIf service and software do not help, the torque converter is the next suspect. This is a shop job requiring transmission removal.hard $$$ · shop-level job, $500+
Applies to: 5th generation 4Runner, 2010 to 2024, with the 1GR-FE 4.0L V6 and the 5-speed automatic. Assumes the stock configuration; trim-specific items (KDSS, sunroof, A/C) are noted where they apply.
Tools and parts for these checks
Links below are affiliate links: toyotadata earns a commission from VEVOR and, as an Amazon Associate, from qualifying Amazon purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.
| ITEM | USED FOR | BUY |
|---|---|---|
| Automatic transmission fluid for your truck | Topping off or changing to the factory fluid type | Shop on Amazon |
| ATF fill pump with transmission adapters, 8 L | Filling fill-and-check transmissions through the fill plug | Shop on VEVOR |
| Bluetooth OBD2 scanner with live data | Reading and clearing codes and watching live sensor data | Shop on Amazon |
Go deeper
More 5th Gen 4Runner problems
- Rust on the frame, flaking, or holes in the frame rails (Frame & Body)
- KDSS warning, fluid leak, or clunking and uneven ride on a KDSS truck (Steering & Suspension)
- Oil leak or oil smell from the front of the engine (Engine)
- Rough idle, shaking, or misfire with a flashing check engine light (Fuel & Ignition)
- Check engine light with P0171 or P0174, system too lean (Fuel & Ignition)
- Check engine light with P0420 or P0430, catalyst efficiency (Emissions)
All 16 5th Gen 4Runner symptoms in the interactive troubleshooter →
General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.