Some owners of 2016-2017 Toyota Tundra trucks have expressed dissatisfaction with the braking feel of the integrated trailer brake controller. Revised software for the trailer brake control ECU has been developed to provide an alternative trailer braking feel. Toyota notes that the brake control relay with bracket should not be replaced as part of this repair procedure.

Some 2016-2019 Toyota Tundra trucks may experience vibration and noise with light braking application. Rear axle runout may not meet the specification of 0.05mm (0.00197 inch).

Some 2012-2013 Toyota Sequoia and Tundra vehicles equipped with 3UR engines may exhibit a MIL on with DTC P2440 (secondary air injection system switching valve stuck on, Bank 1), or P2442 (secondary air injection system switching valve stuck open Bank 2).

Some 2017-2018 Toyota Tundra trucks may exhibit a “no click” or a “no spring return” condition from the fuel cap when fully seated and sealed. In some vehicles, the fuel cap may be contacting the fuel filler neck, leading to this condition.

Some 2016-2017 Toyota Tundra truck customers have expressed dissatisfaction with the braking feel of the integrated trailer brake controller. Revised software for the Trailer Brake Control ECU has been developed to provide an alternative trailer braking feel for these customers.

Sub-freezing temperatures can prompt some 2014-2016 Toyota Tundra vehicles to exhibit a MIL on condition with DTC P2440.