Also Watch: Hot Weather Preventive Maintenance Tips
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6 Main Causes of Hot-Weather Fleet Downtime
Summer heat can lead to costly fleet downtime. In this video, Mike Hagaman of Cox Fleet explains the six key systems fleets should inspect and maintain to help prevent roadside breakdowns.
August 7, 2026
Summer heat can put extra stress on commercial vehicles, increasing the risk of roadside breakdowns and unplanned downtime. The good news? Many of the most common failures can be prevented with routine inspections and proactive maintenance.
In this interview, Mike Hagaman of Cox Fleet discusses the most common causes of hot-weather-related breakdowns and shares practical maintenance tips to help fleets stay productive throughout the summer.
Topics covered in this video include:
- Tire failures
- Cooling system issues
- Belts and hoses
- Battery problems
- Air conditioning system failures
- Check tire pressure regularly
- Monitor coolant levels
- Inspect belts for wear
- Inspect hoses for leaks and deterioration
- Load-test batteries
- Check battery cable corrosion
- Verify proper system voltage
- Follow manufacturer-recommended inspection intervals
- Perform routine pre-trip and post-trip inspections
By focusing on these key systems as temperatures climb, fleets can reduce unexpected downtime and keep trucks operating safely and efficiently throughout the summer.