The 2020 Tundra is the final-stretch second-gen truck with the 5.7L V8. Reliability is strong, but watch for cam tower oil leaks, lower ball joint wear, secondary air injection pump corrosion, and tow-mode transmission learn issues.
The 5.7L 3UR-FE and 6-speed AB60F are well-proven. The few common 2020 Tundra issues are cam tower oil seepage, ball joints, and the secondary air injection (AIP) system.
5.7L V8 cam towers can develop seepage from the FIPG sealant. Common across all 2007-2020 Tundras. Resealing requires intake removal.
Run an AI diagnosis →Lower ball joints wear with mileage and produce front-end clunks. Replacement parts and service kits widely available.
Run an AI diagnosis →Cold-climate Tundras get water intrusion into the AIP, leading to P2440/P2442 codes. Toyota TSB extended warranty in some regions; aftermarket bypass kits common.
Run an AI diagnosis →Small number of 2020 Tundras have brake booster vacuum leaks causing hard pedal. Replacement under warranty if caught.
Brake Pedal Diagnosis →Entune 3.0 occasional Bluetooth drops and slow CarPlay handshake. Software updates from Toyota dealer.
Run an AI diagnosis →Northern Tundras may show surface rust on frame/coatings. Toyota frame coating extended warranty applies on earlier years; check VIN.
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Some 2020 Tundras had brake hose crimping that could leak. Free inspection and replacement at Toyota dealers.
Toyota TSB addressing AIP failure with extended warranty in some cold-climate states.
Toyota service procedure for 5.7L cam tower oil seepage reseal. Performed under powertrain warranty if applicable.
If your Tundra is throwing a check engine light, these are the codes most commonly tied to the problems above. Click any code for full diagnosis steps and typical repair costs.
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Yes. The 5.7L V8 and 6-speed Aisin are among the most reliable powertrains in full-size trucks. Common issues are minor wear items.
Common at higher mileage. The FIPG sealant on cam towers can seep. Reseal requires intake removal and is a major labor item.
Water intrusion into the AIP causes P2440/P2442. Toyota extended warranty in some states; aftermarket bypass kits are common.
2022+ is the all-new 3rd gen with twin-turbo V6 and 10-speed - more powerful but unproven. 2020 with 5.7L V8 is a known quantity good for 300K+.
300K-400K miles is documented with the 5.7L. Frame, transmission, and engine are all overbuilt.
Yes. Brake hose crimp (22V-269) and others. Check VIN at NHTSA.gov.