The 2016 Tundra is generally bulletproof mechanically, but the 5.7L 3UR-FE has a catastrophic weak point: exhaust cam tower failures that destroy the engine. Transmission cooler leaks and front suspension components round out the most common issues, but overall this generation is one of the most reliable full-size trucks if you dodge the cam tower problem.
5.7L Exhaust Cam Tower Failure (Engine Destruction)
Occasional · high severityTypical onset: 60,000-150,000 mi
Symptoms: Metallic ticking or knocking from top-end, Low oil pressure warning, Sudden loss of power, Metal shavings in oil, Catastrophic engine failure if driven after symptoms appear
Fix: The secondary cam tower (exhaust side) cracks or breaks loose, starving cam bearings of oil. Results in spun bearings, scored camshafts, and metal debris throughout engine. Repair requires full engine rebuild or replacement short block with updated cam towers. 30-45 labor hours for engine R&R and rebuild depending on shop. Toyota issued TSB but no recall; some goodwill coverage case-by-case.
Estimated cost: $8,000-15,000
Transmission Oil Cooler Line Leaks
Common · medium severityTypical onset: 80,000-140,000 mi
Symptoms: Transmission fluid puddles under truck, Low transmission fluid level, Burnt transmission fluid smell, Harsh shifting if fluid level drops significantly
Fix: Steel cooler lines rust through where they pass under the frame, especially in salt-belt states. Lines run from transmission to radiator-mounted cooler. Replace both feed and return lines as a pair; single-line failures often followed by the other within 10k miles. 2-3 labor hours, requires lift access and sometimes frame bracket removal.
Estimated cost: $400-700
Lower Ball Joint Wear
Common · medium severityTypical onset: 70,000-120,000 mi
Symptoms: Clunking over bumps from front end, Steering wander or loose feel, Uneven tire wear on inside edge, Play in wheel when checking at 6 and 12 o'clock positions
Fix: Lower ball joints wear out from heavy-duty use and poor boot sealing. These are not serviceable separately—requires complete lower control arm replacement per side. While you're in there, inspect upper ball joints and tie rod ends. 3-4 labor hours per side including alignment.
Estimated cost: $600-1,000 per side
Rear Leaf Spring Shackle Corrosion and Binding
Occasional · medium severityTypical onset: 100,000+ mi or salt-exposed vehicles
Symptoms: Squeaking or groaning from rear suspension over bumps, Harsh ride quality, Visible rust on shackle pins and bushings, Cracked or deteriorated rubber bushings
Fix: Leaf spring shackles and bushings rust in place, preventing normal suspension articulation. Especially bad on trucks in snow-belt states. Requires cutting off seized bolts, replacing shackles, pins, and bushings. While apart, inspect leaf springs for broken leafs. 4-5 labor hours for both sides, often need torch and penetrating oil soak time.
Estimated cost: $800-1,200
Brake Master Cylinder Leak (Internal)
Occasional · high severityTypical onset: 120,000-180,000 mi
Symptoms: Brake pedal slowly sinks to floor when held at stop, Spongy brake pedal feel, No external fluid leaks visible, Brake fluid level slowly drops in reservoir
Fix: Internal seals fail allowing fluid to bypass back into reservoir under pressure. This is a safety-critical failure—brakes still work but with significantly reduced effectiveness and pedal travel. Replace master cylinder and bench-bleed before installation. Full system bleed required. 2-3 labor hours.
Estimated cost: $400-650
Exhaust Manifold Stud Failure (4.6L V8)
Common · low severityTypical onset: 90,000-150,000 mi
Symptoms: Ticking noise from engine that increases with RPM, Exhaust smell in cabin, Visible soot marks on manifold, Noise loudest when cold, may quiet down when hot
Fix: Exhaust manifold studs corrode and break where they thread into cylinder head, causing exhaust leaks. Usually see 2-4 broken studs per side. Requires manifold removal, stud extraction (often requires drilling), HeliCoil installation, new manifold gaskets. Can be done one side at a time. 5-6 labor hours per side if extractions go smoothly—more if studs break off flush or below surface.
Estimated cost: $800-1,400 per side
Secondary Air Injection (AIR) Pump Failure (5.7L)
Occasional · low severityTypical onset: 80,000-130,000 mi
Symptoms: Check engine light with P0410/P0418/P0419 codes, Loud squealing or grinding from front of engine on cold start, Pump runs continuously or not at all, Failed emissions test in states requiring AIR system
Fix: Air injection pump fails due to moisture ingestion or bearing wear. Pump runs only during cold start to help cats light off faster. Truck runs fine without it but will not pass emissions in some states. Replace pump assembly and check one-way valves in system. Some owners delete system entirely where legal. 2-3 labor hours.
Estimated cost: $600-900
Absolutely buy one used IF you can verify no cam tower issues on 5.7L engines (oil analysis history, no top-end noise) or opt for the less powerful but bulletproof 4.6L—outside that Achilles heel, these are 300k-mile trucks.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.