Electrical System Fires and Malfunctions

Wiring harness issues, connector overheating, and battery drain leading to potential electrical fires. This is a severe safety risk. Estimated repair cost: $500 - $1,500+.

Seat Stability Issues

Looseness in seat rails or mounting bolts, leading to instability during driving. This is a safety concern, particularly for the driver's seat. Estimated repair cost: $100 - $300.

Exterior Lighting Overheating

Headlight circuits overheating due to simultaneous high/low beam power, leading to potential fire risk. Addressed by recall 21V688000. Estimated repair cost: $0 (under recall).

Visibility/Wiper System Failures

Wiper motor failure, switch issues, or linkage problems can lead to non-functional or erratic wiper operation. Estimated repair cost: $300 - $500.

Engine Oil Consumption

Some 5.7L V8 engines may exhibit excessive oil consumption between oil changes. Estimated repair cost: $100 - $300 (for diagnosis and potential top-off).

The battery may drain prematurely, leading to starting difficulties and electrical system malfunctions. Estimated repair cost: $200 - $350.

2021 Toyota Tundra Maintenance guide

Name: Maintenance dataset for 2021 Toyota Tundra
Creator: Carfocal

v1.0Updated May 30, 2026Daniel Wilson4 Sources Analyzed16 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Toyota Tundra, while generally reliable, presents specific maintenance considerations, primarily centered around its steering system and electrical components. Numerous recalls have targeted the steering gear assembly due to potential fluid leaks and loss of power assist, necessitating regular checks beyond the recall service.

View Critical Issue: Steering System Failures

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Reliability Score

Est. Annual Maintenance Cost

$700 - $1,000

TSBs & Recalls

13 TSBs | 42 Recalls

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Key Takeaways

The steering system is a primary concern due to multiple recalls for potential power steering fluid leaks and loss of assist. Regular inspection and verification of recall completion are vital.
Electrical system issues, including reports of fires and battery drain, warrant attention. Owners should be vigilant for any unusual electrical behavior.

4 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance