Most owners only think about servicing when something goes wrong. The chassis manufacturer provides maintenance schedules for the engine, the coachbuilder focuses on the body, windows, and roof, Victron documents batteries and inverters, Alde explains the heating system, Dometic covers the refrigerator — but no one brings all of this information together in one place.
This guide is not intended to teach you how to rebuild an engine or overhaul a transmission. Its purpose is to show you what to inspect, when preventive maintenance should be performed, and why prevention is always less expensive than repairs — whether you own a Phoenix, Morelo, Concorde, Carthago, Hymer, or any other motorhome.
How to Use This Guide
A motorhome maintenance schedule can be divided into two categories:
- Routine inspections performed before and after trips.
- Scheduled maintenance based on mileage or elapsed time — oil, filters, fluids, and wear components.
For every maintenance item, it is useful to understand how the system works, the most common causes of wear, the recommended service interval, the approximate cost of preventive maintenance, and the approximate repair cost if maintenance is neglected.
Specific service intervals vary between chassis and motorhome manufacturers. This guide serves as a general framework that you can adapt using your own vehicle's service documentation.
Quick Maintenance Checklist
Before Every Trip
- Check the engine oil level.
- Check the coolant level.
- Check the windshield washer fluid.
- Check tire pressure, including the spare wheel.
- Inspect tires for cracks or damage.
- Verify that all exterior lights are working.
- Check underneath the vehicle for fluid leaks.
- Close all roof windows and skylights.
- Lock all cabinets and drawers.
- Secure the awning.
- Retract the hydraulic leveling jacks.
- Retract the electric entrance step.
- Lock the garage compartment doors.
After Returning from a Longer Trip
- Empty the grey-water tank.
- Rinse the toilet cassette or ceramic toilet.
- Recharge all batteries to 100%.
- Inspect the chassis for fluid leaks.
- Clean the solar panels.
- Clean the refrigerator.
- Ventilate the interior.
Every Month
- Check tire pressure.
- Test the starter battery.
- Check the LiFePO₄ batteries and recalibrate by charging to 100% State of Charge (SOC).
- Test the residual-current device (RCD/GFCI).
- Check for any Victron system alarms.
- Verify proper operation of the inverter and battery charger.
- Inspect the auxiliary drive belt.
- Check the alternator.
Service Intervals by Mileage and Time
The intervals below are general guidelines. Always cross-reference with your chassis manufacturer's official documentation.
Every 20,000 km (12,500 mi) or 1 Year
- Engine oil and oil filter
- Chassis inspection
- Brake inspection
- Steering inspection
- Shock absorber inspection
- Hose inspection
- Engine leak inspection
Every 40,000 km (25,000 mi)
- Fuel filter
- Cabin air filter
- Brake pad inspection
- Brake disc inspection
- Wheel alignment inspection
Every 60,000 km (37,000 mi)
- Engine air filter
- Drive belt inspection
- Belt tensioner inspection
- Turbocharger inspection
- Intake system inspection
Every 80,000–100,000 km (50,000–62,000 mi)
- Automatic transmission oil replacement
- Automatic transmission filter replacement
- Transmission cooler inspection
- Transmission adaptation/reset after service (if recommended by the manufacturer)
Every 100,000 km (62,000 mi)
- Differential oil replacement
- Driveshaft inspection
- Wheel bearing inspection
- Universal joint inspection
Every 2 Years
- Brake fluid replacement
- Air-conditioning service
- Water system disinfection
- LPG system inspection
- Heating system inspection
Every 3–5 Years
- Coolant replacement (according to manufacturer specifications)
- Inspection of all rubber hoses
- Suspension bushing inspection
- Roof seal inspection
- Inspection of all roof penetrations
Never Underestimate Roof Seals
Inspecting the roof seals and all roof penetrations — including the air conditioner, solar cable entries, vents, and antennas — typically costs only a few hundred dollars or euros. Ignoring small leaks, however, can result in water damage that remains hidden until stains appear on the ceiling or structural wood begins to soften. Repair costs can quickly climb into the tens of thousands, and in severe cases the motorhome body may be considered beyond economical repair.
Prevention vs. Repair Costs
| Component | Preventive service | Repair after neglect |
|---|---|---|
| Engine oil | €150–300 | €5,000–20,000+ |
| Automatic transmission | €500–800 | €5,000–10,000+ |
| Differential | €120–250 | €2,500–5,000+ |
| Brake fluid | €50–120 | Significant loss of braking performance |
| Roof seals | Hundreds of euros | Tens of thousands due to long-term water intrusion |
What Comes Next?
This overview is only the introduction to a much larger knowledge base. The following chapters examine each system in detail:
- Engine
- Automatic transmission
- Differential
- Brakes
- Chassis
- Tires
- Electrical system
- LiFePO₄ batteries
- Solar system
- Victron equipment
- Water system
- LPG installation
- Alde and Truma heating systems
- Air conditioning
- Roof windows and skylights
- Awning
- Corrosion protection
- Winterization
- Spring recommissioning
- Complete maintenance logbook
Our goal is to create one of the most comprehensive preventive maintenance guides for motorhomes — a resource that helps owners extend the lifespan of their vehicles, improve reliability on the road, and avoid unnecessarily expensive repairs.
Maintenance Logbook and Detailed Guides
This article provides only the condensed framework of a complete maintenance schedule. The accompanying chapters explain each system in detail, including how to keep your own maintenance logbook and why, unlike a conventional passenger car, a motorhome requires regular monitoring not only of the chassis but also of the living area and all onboard systems.
A practical maintenance checklist for the Iveco Daily chassis — including mileage- and time-based service intervals, annual inspections, and quick symptom-based diagnostics — is also available as a downloadable PDF: Iveco Daily Maintenance Logbook.
The complete introductory article, together with all checklists and detailed chapters covering the engine, transmission, brakes, LiFePO₄ batteries, solar system, water system, LPG installation, heating, air conditioning, winterization, and spring recommissioning, is available on the blog: Motorhome Maintenance Schedule — The Complete Preventive Maintenance Guide.
Frequently Asked Questions
Why is preventive maintenance always cheaper than repairs?
Because most major mechanical failures develop gradually. Replacing fluids, filters, seals, or worn components on time is only a fraction of the cost of rebuilding an engine, transmission, or repairing extensive water damage. The key is catching problems when they are still inexpensive to fix — not after they have cascaded into something much larger.
How often should LiFePO₄ batteries be checked?
A visual inspection should be performed regularly. A full charge to 100% State of Charge (SOC) every few weeks or months — depending on usage — helps maintain accurate battery calibration and monitoring. On the Phoenix, I charge the Victron LiFePO₄ NG batteries to 100% at least once a month when the vehicle is in storage, so the SmartShunt always reports accurate capacity data.
Do service intervals vary between motorhome brands?
Yes. While the general maintenance principles are universal, manufacturers may specify different service intervals for the chassis, living area, and onboard equipment. The intervals in this guide are based on Iveco Daily recommendations and general coachbuilder practice. Always follow the recommendations for your specific vehicle and consult your manufacturer's documentation.
Related articles
- LiFePO₄ Batteries Explained — why and how to recalibrate your battery from time to time.
- Inverters and Chargers — monthly checks for the inverter, charger, and system alarms.
- Electrical Basics in a Motorhome — understanding fuses, circuit protection, and the residual-current device (RCD) referenced in this maintenance checklist.