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Common Newmar RV Problems

Common Newmar RV Problems

Welcome to our guide on common Newmar RV problems. Whether you are a first-time buyer or an experienced RV enthusiast, this article will provide useful information and tips to help you identify and resolve some of the most common issues associated with owning a Newmar RV. We’ll start by discussing the types of problems that you may encounter as the owner of a Newmar RV and then provide answers to some frequently asked questions. Additionally, we’ll provide useful tips to help you keep your Newmar RV running smoothly for years to come. Let’s get started!

Faulty Equipment

One of the most common issues with Newmar RVs is faulty equipment. This can include problems such as leaky windows, malfunctioning air conditioning units, and faulty electrical systems. To help identify some of these problems, it’s important to regularly inspect your RV for any signs of damage or wear and tear. Additionally, it’s a good idea to have your RV serviced regularly to ensure that all of the equipment is in proper working order. [1]

Slide Out Getting Stuck

Slide outs are one of the most common problems with Newmar RV’s. If you find yourself in a situation where your slide out is stuck, there are several steps you can take to get it un-stuck and back on track.

First and foremost, make sure that the slide out is properly lubricated. This is essential to ensure that the slide out moves smoothly. Check all points of contact between the slides and make sure they are properly lubed. Also, check all guide rails and tracks for any obstructions or damage.

If your slide out is still not working, you may need to pull it in manually. To do this, locate the manual override levers and gently pull on them to move the slide inwards. If you find that your manual override levers are stuck, take a look at the power cable that runs from the RV to the slide out motor. Make sure it’s connected properly and there is no debris or corrosion blocking its path. [1]

Slide Out Getting Stuck

Stability Issues

One of the most common Newmar RV problems is stability. If your vehicle begins to sway or rock excessively when you are driving, it’s important to take action right away. A few steps you can take to help alleviate this issue include:

  • Ensuring that all cargo is properly loaded and secured in the trailer. This includes not just items on the outside, but any cargo inside as well.
  • Having your suspension system inspected regularly to make sure that it is functioning properly.
  • Checking the tire pressure and alignment of the tires. Uneven wear can indicate an alignment issue that needs addressing.
  • Making sure your RV’s brakes are in good condition and that they’re working properly.

Finally, if you’re concerned about stability while driving your Newmar RV, consider having a professional inspect it for any problems. This could help to uncover any hidden issues that could be causing instability. [1]

Bad headlights

Headlights are a very important tool for RV owners. Poor headlights can be dangerous, as they can reduce visibility on the roads. Common Newmar RV problems include bad headlights, which may not provide enough illumination or may be malfunctioning due to an electrical issue. To solve this problem, check the bulbs and fuse boxes and replace any broken parts. If your headlights still don’t work, you may need to take your RV to a mechanic for further inspection. Additionally, it is important to install the correct bulbs, as they can vary between Newmar models. [2]

Draining of pipes

One of the most common issues that RVers face is draining water from their pipes. If you’re having trouble getting your pipes drained, then it’s likely due to a few different things. The first thing to check for is blockages in the lines caused by mineral deposits or other debris. This can usually be fixed by flushing the lines with a cleaning solution.

If that doesn’t work, then you may have an issue with your drain valves not opening properly. This can be caused by age or wear and tear on the valve, so it’s important to check for this and replace if necessary. Additionally, make sure to regularly maintain your drain valves so they don’t get stuck open or closed. [2]

Draining of pipes

Less Storage

One of the most common Newmar RV problems is the lack of storage space. One of the biggest complaints from RV owners is that they feel cramped and claustrophobic in their RVs due to limited usable storage space. To help alleviate this issue, many manufacturers are now offering models with more interior and exterior storage options. Additionally, you can also look into purchasing additional storage containers, bins, or shelves to help maximize the space you have. [2]

Melting of wires

One of the most common Newmar RV problems is melting wires. This is caused by poor insulation or small wiring being used to power a large appliance, such as an air conditioner. To prevent this from happening, make sure your RV has proper insulation between wires and any other metal objects that could cause a short circuit. Additionally, use adequate sized wiring to power any large appliances. If you’re unsure what size wire to use, consult with an experienced RV electrician or your local Newmar dealer.

If you find that your wires have already melted, it’s best to turn off the power immediately and contact a qualified technician to repair the damage. Trying to fix it yourself may result in further damage or even a fire, so it’s best to call the professionals. [2]

Shower Door Leaks

Shower door leaks are a common issue with Newmar RV owners. Most of these problems can be solved by checking the seals around the shower doors and making sure they are securely fastened. If you find that your seals are not secured properly, you may need to use some waterproof sealant on them to ensure they don’t leak. Additionally, you should also look for any cracks or damage in the shower doors themselves and replace them if necessary. If none of these solutions solve your issue, it may be time to call a professional for help. They can properly diagnose the issue and make sure that it’s fixed correctly. [2]

Squeaking sound

Squeaks and rattles can often be heard coming from the interior or exterior of a Newmar RV. These noises are usually caused by loose screws, bolts, and fasteners that need to be tightened up. If you’re unsure what needs tightening, start with the doors, windows, and sliding tracks.

Also check any furniture, cabinets, and storage compartments for loose screws or fasteners that need tightening. If you find any, make sure to use the correct size of screwdriver for the job.

Sometimes the squeaks may not be coming from the RV itself but from other equipment attached to it. This could include bike racks, antennas, or even a satellite dish that may need to be adjusted. [2]

Engine problems

Engine problems are one of the most common RV issues that Newmar owners encounter.  Unfortunately, engine problems can be difficult to diagnose and costly to repair. Some of the most common engine problems include:

  • Low power output or poor acceleration – this can typically be caused by a faulty fuel pump, clogged fuel filter, or a faulty spark plug.
  • Difficulty starting – this can be caused by an old or dirty battery, clogged fuel filter, or a broken starter motor.
  • Overheating – this could mean there is a problem with the radiator, cooling fan, water pump, thermostat, or hoses. [2]

Engine problems

Tires problem

Tires are one of the most important components of an RV and they should be given special attention. Newmar RVs are no different. Over time, tires may become dry-rotted, cracked, or punctured due to general wear and tear. It is important to check the condition of your tires regularly so that any potential problems can be identified and addressed quickly.

If you find that your tires have been damaged, it is best to replace them with new ones as soon as possible. If you are unsure of which type of tire to buy, your local RV dealer or service center should be able to help you out. Make sure that the new tires meet the guidelines stated by the manufacturer and that they are compatible with your RV. [2]

Noise in AC fans

Noise in the air conditioning fan can be caused by several different things. It could be due to a worn or unbalanced fan blade, a broken or misaligned motor mount, or debris stuck in the fan blades. If you hear a loud noise coming from your AC unit, it is important to have an RV technician check it out as soon as possible. If the problem is not addressed promptly, it can cause long-term damage to your AC unit and result in expensive repairs. In order to prevent this from happening, it is important to keep an eye out for any changes in noise coming from your AC fan and address them accordingly. [2]

Window Blinds

Window blinds on Newmar RVs can become stuck, making them difficult to open and close. This is usually due to the buildup of dust, debris, or even bird droppings over time. The best way to fix this problem is by cleaning out the window tracks and lubricating them with a silicone-based spray. For stubborn stains, a rag dampened with warm, soapy water can be used to scrub away the dirt. In addition, you should also check the blinds for any loose parts or clips and replace them if necessary. Doing this regularly can help prevent future problems with your window blinds. If these steps don’t resolve the problem, it may be necessary to contact your local Newmar RV dealer for further assistance. [2]

Lack of Insulation

One of the most common problems experienced with Newmar RVs is that they do not have enough insulation to keep your RV comfortable in colder temperatures. This can be a major problem if you plan on camping in areas where there are drastic temperature changes throughout the night.

In order to combat this issue, it is important to use additional insulation materials, such as foam boards or bubble wraps to help keep your RV warm and cozy. Additionally, you can also use space heaters and electric blankets to provide extra warmth in the colder months. [2]

Lack of Insulation


Which RV is most reliable?

The most reliable RV depends on a variety of factors, including the type of motorhome that you have and how it is maintained. Newmar RVs are known for their quality construction and durability, with many models lasting for decades without major repair. That being said, every vehicle will require some maintenance over time, so it’s important to stay up to date on regular preventative care. Additionally, researching the type of RV you’re interested in can help you determine which models are known for their reliability.

What are the disadvantages of a Class A motorhome?

Class A motorhomes are usually the largest and most expensive RV option, with higher costs for gas mileage, maintenance, storage, and insurance. Additionally, they can be difficult to maneuver in small spaces and tight turns due to their size. Lastly, some campgrounds may not have sites that can accommodate a Class A motorhome.

How does Newmar Comfort Drive work?

Newmar’s Comfort Drive is a steering system that uses an electronic steering wheel in place of manual steering. The system is designed to reduce driver fatigue and make driving easier, as it absorbs the road vibrations and shock that can come with long drives. It also has safety features like lane departure warning, blind spot detection, and adaptive cruise control for a smoother ride.

What is the top model of Newmar?

The top model of Newmar is the Essex, a luxury Class A motorhome. It features an array of amenities, including a large master suite with two full bathrooms and up to five slides. Additional features include Corian countertops, hardwood cabinetry, residential-style furniture, and an outdoor kitchen. The Essex also has several smart home features, including Bluetooth audio/video, SiriusXM radio, and a built-in Wi-Fi router.

What is the top model of Newmar?

How do you drive a motorhome in high winds?

When driving a motorhome in high winds, it is important to take extra precautions. Slow down and drive cautiously, as sudden gusts can cause the vehicle to sway or change direction. Additionally, avoid passing large vehicles like semi-trucks or buses, as their size can make them harder to control in windy conditions. If you start to feel your motorhome being pulled in a certain direction, gently let off the gas and steer into the wind. Lastly, be sure to check your tires before driving, as low tire pressure will cause increased instability in high winds.

What wind speed will flip an RV?

It is difficult to pinpoint an exact wind speed at which an RV will flip, as there are many factors that can affect its stability. The size and weight of the vehicle, its design, and even the road conditions can all play a role in how easily it is blown over. Generally speaking, winds of 30-35 mph have been known to cause some RVs to flip, although it is not a guarantee. For this reason, it is important to take extra precautions when driving in high winds and always err on the side of caution.

Can you run AC in the motorhome while driving?

Most Newmar RVs feature AC systems that can be used while driving, although it is important to check your owner’s manual for specific instructions. When running the AC while in motion, it is important to monitor the engine temperature and ensure that you are not overworking the system. Additionally, know when to turn off the AC if needed – such as when driving up a long hill – to prevent damage to the engine. Finally, make sure to turn off the AC before shutting down the engine so that it can cool down and avoid overheating.

Can you sleep in a motorhome on the roadside?

It is generally not recommended to sleep in a motorhome on the roadside, as you could be ticketed or fined for illegal camping. Additionally, it can be unsafe due to the lack of security and potential risk of theft. If you are planning on taking an extended road trip and need somewhere to park and rest, look for a designated RV rest area, campground, or parking lot. Most of these locations will have facilities like bathrooms and dump stations that you can use as well.

Useful Video: 5 Things We HATE About Our Newmar


No matter the type of Newmar RV you own, it’s important to stay on top of any common problems that can occur. This article has provided information about some of the most frequently asked questions and useful tips for dealing with common Newmar RV issues. Hopefully, you now have a better understanding of how to troubleshoot and fix any problems that might arise. Remember, if you have any further questions about Newmar RV troubleshooting, it’s always best to refer to your owner’s manual or contact an experienced technician for assistance. Good luck and happy travels!


  1. https://www.camperupgrade.com/newmar-rv-problems/
  2. https://trucksauthority.com/common-problems-with-newmar-rvs/