Electrical System Fire Risk (Intake Heater Grid Relay)

Multiple recalls address fire risks associated with the solid-state intake heater grid relay. This defect can lead to electrical shorts and potential fires, necessitating specific parking instructions until repaired. Estimated repair cost: $200 - $500.

Electronic Stability Control (ESC) / Anti-lock Braking System (ABS) Software Glitches

Software issues within the ABS control module have led to recalls concerning ESC and ABS systems. These can prevent the ESC malfunction indicator light from illuminating, impacting vehicle stability control. Estimated repair cost: $150 - $300.

Transmission Fluid Leaks

Recalls have addressed potential transmission fluid leaks from the dipstick tube due to pressure and heat buildup. This can lead to transmission damage if not addressed. Estimated repair cost: $200 - $400.

CARFOCALvehicle research

2021 Ram 2500 Maintenance guide

Name: Maintenance dataset for 2021 Ram 2500
Creator: Carfocal

v1.0Updated Jun 13, 2026Ryan Davis4 Sources Analyzed22 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Ram 2500 requires diligent attention to its electrical system, particularly the intake heater grid relay, due to repeated fire-risk recalls. Owners should also verify completion of airbag and stability control system recalls.

View Critical Issue: Airbag System Malfunctions

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Reliability Score

Est. Annual Maintenance Cost

$500 - $1,000

TSBs & Recalls

88 TSBs | 40 Recalls

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Key Takeaways

The 2021 Ram 2500 has a 'Below Average' reliability verdict, largely due to numerous safety recalls.
Critical maintenance focus areas include the electrical system (fire risk) and airbag systems.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance