Secondary Air Injection System (SAIS) Failure

The SAIS can fail, leading to 'limp mode,' reduced power, and check engine lights (codes P0418, P2440, P2442). This is a common and costly repair, often occurring between 70,000 and 150,000 miles. Estimated repair cost: $1,200 - $4,000.

Steering System Issues

Recalls have addressed potential power steering fluid leaks and component defects in the steering gear assembly, which can lead to a loss of power steering assist. Estimated repair cost: $500 - $1,500.

Rear Wheel Bearing Failure

Rear wheel bearings can fail, often around 97,000 miles, leading to grinding noises and potential damage to brake components. Estimated repair cost: $550 - $960.

Fuel/Propulsion System Issues

Complaints include issues with the fuel system, particularly concerning flex-fuel sensor readings and cold start problems, sometimes leading to stalling. Estimated repair cost: $400 - $800.

Electrical System Concerns

Some owners report electrical system issues, including problems with traction control, ABS, and horn functionality, potentially related to wiring or grounding. Estimated repair cost: Varies.

Airbag System Malfunctions

While less frequent, there are complaints regarding airbag system issues, including passenger seat occupant sensing system calibration and potential airbag non-deployment. Estimated repair cost: Varies.

2012 Toyota Tundra Maintenance guide

Name: Maintenance dataset for 2012 Toyota Tundra
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller29 Sources Analyzed17 Critical Recalls

MAINTENANCE SUMMARY

The 2012 Toyota Tundra demands diligent maintenance, with a notable focus on the secondary air injection system (SAIS), which is prone to failure, often leading to 'limp mode' and significant power loss. Early and consistent inspection of this system, along with the steering components, is critical.

View Critical Issue: Transmission Problems

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Reliability Score

Est. Annual Maintenance Cost

Not available

TSBs & Recalls

172 TSBs | 19 Recalls

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Key Takeaways

The secondary air injection system (SAIS) is a significant concern, with failures often resulting in 'limp mode' and costly repairs. Early detection and preventative checks are advised.
Steering system issues, including potential leaks and component failures, have been addressed by recalls and require attention.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance