2009 TOYOTA TUNDRA

Typical onset: 60,000-150,000 mi

Symptoms: Sudden loud knocking or grinding from top of engine, Metallic debris in oil during oil changes, Check engine light with cam position sensor codes, Complete loss of oil pressure in severe cases

Fix: Cam towers crack where they're pressed into the cylinder head, starving cam bearings of oil. Metal shavings contaminate the entire engine. Requires complete engine rebuild or replacement. 25-35 labor hours for rebuild, 18-22 hours for used engine swap. Many shops won't warranty a rebuild due to potential hidden damage throughout.

Estimated cost: $8,000-15,000

Typical onset: 80,000-120,000 mi

Symptoms: Check engine light with P0418/P0419 codes (secondary air injection malfunction), Loud squealing or grinding noise on cold starts for first 60-90 seconds, Failed emissions testing in states that monitor this system, Pump assembly visibly corroded underneath truck

Fix: Pump assembly rusts from road salt and moisture, eventually seizing. Located low on passenger frame rail, takes a beating. Replace pump assembly and check valves. 2.5-3.5 labor hours. Some techs delete the system in non-emissions states, but risks CEL and potential legal issues.

Estimated cost: $800-1,400

Typical onset: 100,000-160,000 mi

Symptoms: Red ATF puddles under truck, usually passenger side, Low transmission fluid warning or slipping shifts, Visible corrosion on steel cooler lines near radiator, Burnt transmission smell if driven low on fluid

Fix: Steel cooler lines rust through where they connect to radiator or along frame routing. Replace both lines as a set even if only one is leaking—the other is close behind. 3-4 labor hours. Flush and refill transmission, inspect for damage if driven low on fluid.

Estimated cost: $600-1,000

Typical onset: 90,000-140,000 mi

Symptoms: Ticking or tapping noise from engine bay that increases with RPM, Exhaust smell in cabin, especially at idle, Visible soot streaks on manifold or around studs, Failed emissions test due to exhaust leak pre-cat

Fix: Cast iron manifolds crack near ports or studs break due to heat cycling. More common on 5.7L due to higher heat. Requires manifold replacement and often drilling/extracting broken studs from heads. 6-8 labor hours per side. OEM manifolds prone to repeat failure; aftermarket headers are an upgrade path.

Estimated cost: $1,200-2,200

Symptoms: Visible surface rust progressing to scale and flaking on frame rails, Perforation holes through frame, especially rear cross members, Failed state inspection in rust-belt states, Difficulty mounting spare tire or trailer hitch due to compromised metal

Fix: Severe issue on trucks from salt-belt states (Northeast, Midwest). Toyota had a frame replacement program that expired, but many 2009s missed the cutoff or weren't severe enough at the time. No economical fix—frame replacement is 40+ hours and $8,000+ in parts alone. Most get scrapped or sold out of region.

Estimated cost: $12,000-20,000

Typical onset: 80,000-120,000 mi

Symptoms: Clunking noise over bumps from front end, Steering wander or loose feel at highway speeds, Excessive tire wear on inside or outside edges, Visible play when prying on tire with truck on lift

Fix: Lower ball joints wear prematurely, especially on 4WD models with larger tires or lifts. Can separate catastrophically, causing wheel to fold under. Replace both lower ball joints, alignment required. 4-5 labor hours. Aftermarket options more durable than OEM.

Estimated cost: $800-1,200