RV Maintenance Guide: What to Check Before Small Problems Become Expensive

A practical RV maintenance schedule

The best schedule follows use, mileage, climate, and manufacturer instructions—not a universal calendar. These checkpoints give you a reliable starting rhythm.

Before every travel day

• Set tire pressures when the tires are cold and inspect for damage, uneven wear, and embedded objects.
• Check wheel-lug torque according to the wheel and RV manufacturer, especially after wheel removal or recent service.
• Test running lights, turn signals, brake lights, trailer brakes, and the breakaway system where equipped.
• Confirm the hitch, coupler or fifth-wheel jaws, safety chains, electrical connection, steps, awnings, antennas, windows, vents, and exterior doors are secured.
• Look underneath for fresh fluid or water leaks and verify that loose items inside are secured.

Monthly while the RV is in use

• Walk the roof and exterior from a safe position and inspect seams, sealant, roof accessories, windows, and storage-door frames.
• Check battery terminals, visible wiring, plumbing connections, water-pump operation, and signs of moisture.
• Test smoke, carbon-monoxide, and propane alarms according to their manufacturer instructions.
• Exercise the generator if required by its manual and inspect slide seals and mechanisms.
• Review the maintenance tracker for items coming due.

Seasonally and annually

• Arrange bearing, suspension, brake, hitch, and chassis inspections at the intervals specified for your RV.
• Service motorhome engines, transmissions, cooling systems, and generators by mileage, hours, and time—not by generic RV advice.
• Inspect the roof closely and use only sealants approved for the specific roof and surface materials.
• Service the water heater and sanitize the fresh-water system according to the RV and appliance manuals.
• Inspect propane appliances and the propane system; use a qualified RV technician for pressure tests, leaks, regulator concerns, or combustion problems.

Tires, wheels, brakes, and running gear

Tire condition is about more than tread depth. Check inflation when cold, sidewall cracking, bulges, cuts, unusual wear, age, and load capacity. Use the RV’s certification label, tire maker guidance, and actual loaded axle weights when determining safe pressures and loading. Do not rely on a passenger-car tread test alone to decide whether an RV tire is road-ready.

Trailer-bearing service, brake adjustment, suspension inspection, and lug-nut torque are component-specific. Record the work instead of relying on memory. If you have experienced a blowout, do not simply install a spare and continue—the wheel well, wiring, plumbing, brake components, and surrounding structure may also be damaged.

Related help: what to inspect after a travel-trailer tire blowout and our travel-trailer brake guide.

Roof, sealants, and exterior water intrusion

Water intrusion can travel far from the point where it enters. Inspect roof edges, vents, skylights, antennas, ladders, marker lights, windows, doors, corner trim, and wall penetrations. Watch for lifted sealant, gaps, staining, soft surfaces, bubbling wall material, or musty odours.

Never assume every tube labelled “RV sealant” is compatible. Confirm the roof material and use the product specified by the RV or roof manufacturer. Covering failed sealant with another layer can hide damage without correcting the source.

Fresh water, plumbing, and waste systems

Use a potable-water hose and a pressure regulator where campground pressure may exceed your RV’s plumbing limits. Inspect exposed connections, the water pump, low-point drains, toilet seal, water heater, and areas under sinks for moisture.

Drain, disinfect, and flush the fresh-water system according to the RV manufacturer, especially after prolonged storage or when water quality is uncertain. The CDC’s Safe RV Water from Tank to Tap guidance notes that many RV manufacturers recommend sanitizing at least annually or after the RV has been unused for several months.

For targeted help, see our RV low-water-pressure guide and water-pressure regulator overview.

12-volt and 120-volt electrical maintenance

RV electrical systems combine battery-powered 12-volt DC equipment with 120-volt AC shore power, generator power, or inverter output. Keep battery connections clean and secure, inspect accessible cables for heat or damage, and watch for outlets, plugs, breakers, or cords that are discoloured or unusually warm.

Stop using the affected circuit if you smell burning, see melted insulation, repeatedly trip a breaker or GFCI, hear arcing, or receive a shock or tingling sensation from the RV. Disconnect safely and have the system inspected by a qualified technician. Do not open energized panels or attempt repairs beyond your training.

Propane, alarms, and appliances

Keep appliance vents clear and follow the service requirements for the furnace, refrigerator, water heater, range, and other propane equipment. Test safety alarms as instructed and replace them at the end of their stated service life.

If you smell propane, hear leaking gas, or an alarm activates, avoid flames, switches, and ignition sources. Leave the RV, shut off the propane only if it is safe to do so, and seek qualified help. Never search for a suspected leak with a flame.

Motorhome maintenance versus towable maintenance

A motorhome adds a vehicle drivetrain and chassis to the RV systems covered above. Follow the chassis maker’s schedule for engine oil, filters, transmission, coolant, belts, hoses, brakes, steering, suspension, and tires.

A travel trailer or fifth wheel does not require engine service, but its hitch, coupler or pin box, breakaway system, wheel bearings, suspension, trailer brakes, and frame deserve the same attention. Truck campers also depend on the pickup’s payload, tires, tie-downs, and suspension being correctly matched to the loaded camper.

Storage and winterization

Storage preparation depends on climate, RV design, battery type, appliance instructions, and whether shore power is available. Drain or winterize plumbing as required, remove food and pest attractants, manage batteries according to their manufacturer, protect tires from prolonged sun exposure, and maintain ventilation without allowing weather inside.

Avoid generic advice such as lifting the entire RV or covering solar panels unless the RV, tire, jack, and solar manufacturers specifically support it. For cold-weather plumbing preparation, follow our RV winterization guide.

Build an RV maintenance system you will actually use

1. Add your RV, appliance, chassis, and component service intervals to the RV Maintenance Tracker.
2. Keep manuals, receipts, tire dates, part numbers, and service records together.
3. Use the RV Tool Kit Checklist to fill practical gaps without buying tools you will not use.
4. Visit the Trusted Brand Directory when you need a manufacturer, service provider, or RV product company.
5. Review the schedule before every travel season and after any long storage period.

Frequently asked questions

How often should an RV be serviced?

There is no single interval for the entire RV. Follow the RV, chassis, appliance, tire, axle, brake, battery, generator, and component manuals. Mileage, generator hours, climate, storage, and travel conditions can all change the schedule.

What RV maintenance should a beginner do?

Most owners can handle visual inspections, cleaning, recordkeeping, alarm tests, tire-pressure checks, and other manual-approved tasks. Electrical faults, propane work, structural damage, brake uncertainty, and repairs beyond your training belong with a qualified technician.

What causes the most expensive RV damage?

Undetected water intrusion can cause extensive structural and interior damage. Tire failures, neglected running gear, electrical overheating, plumbing leaks, and deferred drivetrain maintenance can also become expensive quickly.

Do RV tires need to be replaced based only on tread?

No. Age, UV exposure, cracking, bulges, damage, inflation history, loading, and manufacturer guidance also matter. Have questionable tires inspected by a qualified tire professional.

Can I use automotive parts and sealants on an RV?

Only when the RV, chassis, appliance, roof, or component manufacturer confirms compatibility. RV construction materials and systems vary, and the wrong sealant, chemical, electrical component, or replacement part can create new problems.

Useful maintenance supplies

A quality tire-pressure gauge, torque wrench with the correct sockets, potable-water pressure regulator, basic multimeter used within your training, inspection light, sealant tools, and manufacturer-approved maintenance products can support routine checks. Buy for your actual RV and manuals rather than assembling a generic collection.

Affiliate disclosure: Some product links on this page may earn us a commission at no additional cost to you. Recommendations are chosen for practical relevance; manufacturer instructions and safe operating limits always come first.