One problem related to power train driveline has been reported for the 2006 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Tundra based on all problems reported for the 2006 Tundra.
Defective 4 wheel drive from factory. Two days after purchase I had the opportunity to use the 4 wheel drive. I attempted to engage the 4 wheel drive and it was not operating. I took the vehicle back to the dealer and it was repaired after 6 days in the service department. I was told the 4 wheel drive engaging unit was installed improperly at the factory causing it to fail which also caused the electronic control unit to fail. Both units were replaced. I asked the dealer why the 4 wheel drive unit was not tested before leaving the factory or dealer and was told that this system is not tested at the factory or during dealer preparation.