Climate Control System Malfunction

The climate control system may not cool or heat properly. Estimated repair cost: $150 - $800.

12V Auxiliary Battery Drain

The 12V auxiliary battery can deplete due to the Hybrid Vehicle Electronic Control Unit (HV ECU) not entering its sleep mode. Estimated repair cost: $100 - $400.

Heat Pump Humming/Buzzing Noise

A humming or buzzing noise may be heard upon startup when the compressor is engaged. Estimated repair cost: $100 - $300.

2021 Toyota RAV4 Prime (PHEV) Maintenance guide

Name: Maintenance dataset for 2021 Toyota RAV4 Prime (PHEV)
Creator: Carfocal

v1.0Updated May 30, 2026Daniel Wilson19 Sources Analyzed

MAINTENANCE SUMMARY

The 2021 Toyota RAV4 Prime (PHEV) boasts excellent initial reliability with zero recalls and zero complaints. Key maintenance focuses on routine fluid checks and replacements, brake inspections, and monitoring the PHEV system.

View Critical Issue: High-Voltage System (DC-DC Converter) Risk

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Reliability Score

Est. Annual Maintenance Cost

$190

TSBs & Recalls

0 TSBs | 0 Recalls

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Key Takeaways

The 2021 Toyota RAV4 Prime demonstrates excellent reliability with no reported recalls or complaints.
Regular maintenance, including fluid services and brake checks, is vital for longevity.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance