Preventive maintenance is the foundation of any profitable fleet service business. For your commercial clients, it’s not just about keeping vehicles running — it’s about reducing downtime, improving safety, and protecting their bottom line. When you position your dealership as a proactive maintenance partner, you become indispensable to your fleet accounts.

Here’s an essential checklist you can share with your clients — and use internally — to make sure no maintenance opportunity slips through the cracks.

1. Engine and Oil System

• Change engine oil and replace filters at proper intervals.

• Inspect belts and hoses for cracks or wear.

• Check for leaks and oil contamination.

• Verify fluid levels and condition (engine oil, coolant, power steering).

2. Electrical and Charging Systems

• Test batteries for voltage and cold-cranking amps.

• Inspect terminals for corrosion and ensure tight connections.

• Check alternator output and charging system operation.

• Confirm that all exterior and interior lights are working properly.

3. Tires and Suspension

• Measure tread depth and inspect for uneven wear patterns.

• Verify correct tire pressure and rotate tires as needed.

• Inspect shocks, struts, and suspension components for wear or leaks.

• Check alignment if vehicle pulls or tires wear unevenly.

4. Brakes and Safety Systems

• Inspect brake pads, rotors, and fluid levels.

• Test emergency brakes and ABS systems.

• Check for leaks in brake lines and fittings.

• Verify proper operation of all safety equipment (horn, seatbelts, cameras, sensors).

5. Fluid and Filter Maintenance

• Replace air, fuel, and cabin filters on schedule.

• Inspect and top off all fluids, including coolant, transmission, and differential.

• Check DEF fluid levels for diesel vehicles.

• Ensure all caps, seals, and lines are secure and leak-free.

6. Body and Undercarriage Inspection

• Look for rust, corrosion, or loose parts.

• Examine exhaust system and mounts.

• Verify that all underbody guards and splash shields are intact.

7. Documentation and Reporting

• Record all service details, mileage, and technician notes.

• Provide customers with a printed or digital report showing completed services and upcoming recommendations.

Final Thought

A strong preventive-maintenance program keeps fleets safe, predictable, and profitable. For dealers, it creates a steady stream of recurring work and long-term contracts. At FSI, we know that consistent PM service is the key to building trust and growing revenue — one fleet at a time.