BYD electric buses are transforming city transit worldwide, but they require a fundamentally different maintenance approach than diesel. No oil changes. No transmission service. Instead, focus shifts to battery health, high-voltage systems, and regenerative braking components. The 100-hour PM for BYD buses catches EV-specific wear patterns while maximizing the inherent reliability advantages of electric drivetrains.
This guide provides the complete 100-hour PM checklist specifically designed for BYD city transit buses. Transit agencies that schedule a platform walkthrough see how digital checklists enforce completion of every inspection point while automatically documenting compliance.
Quick Specs StripElectric vs Diesel: What Changes
BYD electric buses eliminate many traditional maintenance items but introduce new inspection requirements. Understanding these differences is critical for proper PM execution:
The result? 40-50% fewer moving parts means fewer failure pointsand 40-60% lower maintenance costs over the vehicle lifecycle. Fleets that track these savings in CMMS can prove ROI to stakeholders with real cost-per-mile data.
Complete 100-Hour PM Checklist
Battery & HV SystemBattery & High-Voltage System
Electric Drive System
Charging System
Brake System
HVAC System
Safety & Body Systems
Tires & Suspension
Parts & Documentation Required
Battery coolant (for top-up)
Cabin air filter
Brake fluid (DOT 4)
Dielectric grease
Contact cleaner
Reduction gear oil (if due)
Battery SOH report printout
BMS fault code log
Brake pad measurements
Tire tread depth readings
Photo evidence of inspections
Technician certification & sign-off
AI-Powered Maintenance Insights
Modern CMMS platforms analyze PM data across your fleet to surface patterns and predict issues before they cause service interruptions:
Battery Degradation Tracking
AI monitors SOH trends across fleet, flagging buses degrading faster than expected for investigation or warranty claims.
Predictive Brake Alerts
Correlates regen braking usage with pad wear to predict service timing—EVs with heavy regen need less friction brake work.
HVAC Efficiency Analysis
Identifies buses with higher-than-normal HVAC energy consumption indicating refrigerant leaks or system inefficiency.
Charging Optimization
Analyzes charging patterns to recommend schedules that maximize battery longevity and minimize peak demand charges.
Transit agencies using AI-powered CMMS report 28% fewer unplanned service interruptions. Book a 15-minute demo to see these insights working on real fleet data.
Why CMMS for Electric Fleets
Hour-Based Auto-Scheduling
CMMS pulls operating hours from telematics and triggers PM work orders at exact 100-hour intervals automatically.
EV-Specific Checklists
Pre-built templates for BYD and other electric buses with correct inspection items—no diesel holdovers confusing techs.
Battery Health Dashboard
Track SOH trends, charging cycles, and cell balance across your entire electric fleet in one real-time view.
Warranty Documentation
Automatic record-keeping proves PM compliance for battery warranty claims—often worth $100K+ per bus.
Ready to see how it works for your fleet? Create a free account and import your first BYD bus in under 5 minutes.
Optimize Your BYD Electric Fleet
Join transit agencies using Bus CMMS for EV-specific maintenance, battery health tracking, and AI-powered insights.
Frequently Asked Questions
What's different about BYD electric bus maintenance?
BYD electric buses eliminate engine oil changes, transmission service, and exhaust system maintenance. Instead, focus shifts to battery health monitoring, HV system inspections, thermal management, and regenerative braking calibration. Overall maintenance costs are 40-60% lower than diesel equivalents.
Do technicians need special certification for BYD buses?
Yes, high-voltage (HV) certification is required for any work on battery systems, charging components, or electric drive systems. This typically requires 40+ hours of specialized training. Non-HV tasks like brake inspection, HVAC service, and body work can be performed by standard technicians.
How often should BYD electric buses receive PM service?
BYD recommends a tiered schedule: daily pre-trip inspections, 100-hour minor service, 250-hour intermediate service, and 500-hour major service. The 100-hour PM focuses on safety systems and early detection of issues, while major services include deeper battery diagnostics.
What battery checks are included in the 100-hour PM?
The 100-hour PM includes recording state-of-charge and state-of-health, checking BMS fault codes, inspecting the battery enclosure, verifying coolant level, checking thermal management operation, inspecting HV cables, and testing interlock systems.
How does CMMS help with electric bus maintenance?
CMMS provides automated hour-based scheduling via telematics integration, EV-specific digital checklists, battery health trending dashboards, parts inventory management, and automatic documentation for warranty compliance. AI features predict issues and optimize maintenance timing.
