Every 3 Months Car Maintenance Checklist
Keep your vehicle running smoothly with this comprehensive 3-month car maintenance checklist. Perfect for DIYers and proactive owners between major oil changes.
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| Item | Priority | Who | Time | What to check (Pass/Fail) | If failed (Next step) |
|---|---|---|---|---|---|
| Engine Oil Level | Required | DIY | 5 min | Level between Min/Max marks | Top off or change oil |
| Tire Pressure (All 5) | Required | DIY | 10 min | Matches door-jamb PSI | Inflate to spec |
| Washer Fluid Level | Recommended | DIY | 2 min | Reservoir is full | Refill with seasonal fluid |
| Headlights (High/Low) | Required | DIY | 3 min | Both sides illuminate brightly | Replace bulb or check fuse |
| Brake Lights | Required | DIY | 2 min | All bulbs light when pressed | Replace bulb immediately |
| Turn Signals | Required | DIY | 2 min | Consistent blinking speed | Replace bulb or relay |
| Wiper Blade Condition | Recommended | DIY | 5 min | No streaks, tears, or chatter | Replace wiper blades |
| Coolant Level | Required | DIY | 3 min | Level at 'Full Cold' line | Top off; check for leaks |
| Battery Terminals | Recommended | DIY | 5 min | No white/blue corrosion | Clean with wire brush |
| Tire Tread Depth | Required | DIY | 5 min | Above 2/32" (or Lincoln's head) | Replace tires soon |
| Air Filter Visual | Recommended | DIY | 5 min | Filter is white/grey, no debris | Replace filter |
| Power Steering Fluid | Recommended | DIY | 3 min | Level within range on dipstick | Top off; check pump for noise |
| Brake Fluid Level | Required | DIY | 2 min | Level between Min/Max | Top off; inspect brake pads |
| Serpentine Belt | Recommended | DIY | 5 min | No cracks, fraying, or glazing | Schedule belt replacement |
| Horn Operation | Required | DIY | 1 min | Loud, clear sound | Check fuse or horn unit |
| Dashboard Warning Lights | Required | DIY | 1 min | No lights remain on after start | Scan for OBD-II codes |
| Exhaust Visual Check | Optional | DIY | 5 min | No excessive rust or holes | Visit muffler shop |
| Floor Mat Clearance | Required | DIY | 1 min | Mat does not interfere with pedals | Reposition or replace mat |
Use this table as a guide during your quarterly inspection. We recommend printing this page or keeping it open on a mobile device as you move around the vehicle.
Consistency is key to vehicle longevity. If you find multiple 'Fail' items, prioritize safety-related components like brakes, tires, and lighting before addressing cosmetic or comfort issues.