New 2025 Navion 24D Owner With Questions

[Bucket List Navion]

Hello,
We just bought a new 2025 Navion 24D motorhome and are excited to start traveling the country in it!!
Having owned a 1990 24ft class c Jamboree for 20 years, we are familiar with the lifestyle. I did most of the maintenance and troubleshooting except for the labor-intensive engine work.
I am a tech nerd with an electronics background, but this new rig intimidates me with all the new systems.
We are looking into upgrading the stock lead acid batteries to as much Lithium battery power we can fit in that small step area.

Can any of you Navion owners advise us on what to expect during the break in period?

Thanks in advance, and hope to see you on the road!!!
Ted

 

[Riverbend]

Congratulations! I'm not familiar enough with any differences in your 2025 and our 2023View (Navion and View are the same thing except for the name), but I can tell you that I swapped the LA batteries for one Epoch 300Ah battery pretty easily. There are several choices for good LiFePo batteries, and I wanted one with Bluetooth and built-in self heating for cold weather use. I also added a Victron 50A DC-DC charger under the passenger seat for controlled charging while driving, added 100W of solar to the roof, and travel with a 200W suitcase panel for days when I might need to park in shade and have sun exposure nearby. It's worked well for us. Do you have a factory installed MasterVolt under the passenger seat, or a solenoid?

 

[Pointyears]

Hello,
We just bought a new 2025 Navion 24D motorhome and are excited to start traveling the country in it!!
Having owned a 1990 24ft class c Jamboree for 20 years, we are familiar with the lifestyle. I did most of the maintenance and troubleshooting except for the labor-intensive engine work.
I am a tech nerd with an electronics background, but this new rig intimidates me with all the new systems.
We are looking into upgrading the stock lead acid batteries to as much Lithium battery power we can fit in that small step area.

Can any of you Navion owners advise us on what to expect during the break in period?

Thanks in advance, and hope to see you on the road!!!

I'm curious what you think about the 4 cylinder diesel.

 

[Morich]

As a new owner, I like to point folks to some good info that Winn posts online. Always good to get the straight info from the folks who build things? We can always throw in the confusion later!
Winnebago home site for links to other points. Especially look under the "owners" tab for links to electrical, plumbing, and lots of things like an interactive parts setup!

Home - Winnebago

www.winnebago.com

Being into electrical, you may find some good but some really frustrating info as they now give us "installation drawings" which are not the same as schematics for the 12VDC side of things!

Wiring Diagrams

There are ways to get there but it takes a full blown trauma to get it in a fashion we can use. Go to install drawings, get the part found and then look for wire/circuit info of usually two-three letters.
ID from drawings is also stamped on the smaller wires!
Those wire/circuit ID can be decoded with this chart:

https://www.winnebago.com/Files/Files/Winnebago/Resources/Diagram/electrical_guide.pdf

After the 2010 model year, we have to sort of hunt and peck for clues and then add them together to make our own schematics! It makes me consider buying older just for the info!
Recommend not skipping over the list of help at lower left of the drawings as Winnebago is much like others and do have their own special ways to present info!

But I also have to give credit for the interactive parts section as it is great for learning where they may have hidden things we need to find! There are lots of times when I may read about an item and want to find it but have no idea what it looks like?
The parts drawings are often very accurate and very detailed. Down to the point of looking at an inverter and spotting a GFCI is built into one end? That may save you a lifetime of searching if it is well hidden under some cabinet or compartment.
If you have a slide and see on the drawings you need to have the slide out and lay down to look up to find the slide controller, you can imagine how that helps?

I try to avoid crawling under if I can find it while at my desk!!!
Enjoy the new!

 

[bigbAZ]

Hello,
We just bought a new 2025 Navion 24D motorhome and are excited to start traveling the country in it!!
Having owned a 1990 24ft class c Jamboree for 20 years, we are familiar with the lifestyle. I did most of the maintenance and troubleshooting except for the labor-intensive engine work.
I am a tech nerd with an electronics background, but this new rig intimidates me with all the new systems.
We are looking into upgrading the stock lead acid batteries to as much Lithium battery power we can fit in that small step area.

Can any of you Navion owners advise us on what to expect during the break in period?

Thanks in advance, and hope to see you on the road!!!
Ted

Welcome Ted! You already live in one of our vacation destinations!

As far as the new rig, I follow the Sprinter pretty closely and one thing I will tell you so you are not surprised if it happens, the oil temps on both the V-6 and the 4 cyl run very high, especially when climbing. The big difference is that the 4 cyl will de-rate once the oil temp reaches a certain threshold. May or may not happen to you but something you should keep in the back of your mind just in case so you won't be suddenly surprised by reduced power when climbing a grade.

There are 2 factory software tunes for the 4 cyl, regular and high output. The engines are the same, it's only the software that allows for higher output and allows for the possibility of the higher oil temps and resulting a de-rate till things cool back down.

Even though I have the old V-6 we never run the dash air when climbing as I strive to keep the EOT under 260F.

Another thing I will share with you is the oil change interval, don't be fooled by the MB 20,000 mile OCI, that is not for you as a fully loaded RV constitutes "arduous" duty as MB calls it, and you will need more frequent service.

If you want to know all about your chassis I suggest you join the Sprinter-Source forum where there are hundreds of Sprinter owners of varying abilities along with professional MB mechanics willing to help and share free info, making for an extremely active forum.

 

[Bucket List Navion]

Thank you for the responses! We pick the new Navion this coming weekend. The dealer is doing some upgrades for us. I will get back to you regarding the specifics as I learn more about this beast.
The big issue this week is how much lithium power they can fit into that tight step battery area.
The service guy claims two Group 24's or smaller is the only size. However later this morning he is going to see if the oneEpoch 300 will fit. If so, I'll take it.
Based on the Winni wiring diagrams, a Group 31 size will fit. Amazon has a Group 31 Redodo smart 165ah for $350. If the Epoch will not fit, I may drive it away with the stock lead acids and install the Redodo batts or equivalent myself. That 12 volt only fridge is my big concern. The rig comes with two 100 watt roof solar panels. I plan to buy a portable external 100w panel and extension cable for parking in the shade.

 

[Pointyears]

Thank you for the responses! We pick the new Navion this coming weekend. The dealer is doing some upgrades for us. I will get back to you regarding the specifics as I learn more about this beast.
The big issue this week is how much lithium power they can fit into that tight step battery area.
The service guy claims two Group 24's or smaller is the only size. However later this morning he is going to see if the oneEpoch 300 will fit. If so, I'll take it.
Based on the Winni wiring diagrams, a Group 31 size will fit. Amazon has a Group 31 Redodo smart 165ah for $350. If the Epoch will not fit, I may drive it away with the stock lead acids and install the Redodo batts or equivalent myself. That 12 volt only fridge is my big concern. The rig comes with two 100 watt roof solar panels. I plan to buy a portable external 100w panel and extension cable for parking in the shade.

The Navion step is the same as my Vita's step and two group 31's are in there now so as long as your lithiums are the same size or smaller you'll be fine.

 

[SeeTheUSA]

I modified the battery box area on our 2018 24D View (looks to be about the same) … then was able to fit two considerably larger batteries in the compartment. I went with larger lead acid Trojans, fit what we do well. The box modifications were fairly easy to do.

See my after and before pics:

 

[Bucket List Navion]

Welcome Ted! You already live in one of our vacation destinations!

As far as the new rig, I follow the Sprinter pretty closely and one thing I will tell you so you are not surprised if it happens, the oil temps on both the V-6 and the 4 cyl run very high, especially when climbing. The big difference is that the 4 cyl will de-rate once the oil temp reaches a certain threshold. May or may not happen to you but something you should keep in the back of your mind just in case so you won't be suddenly surprised by reduced power when climbing a grade.

There are 2 factory software tunes for the 4 cyl, regular and high output. The engines are the same, it's only the software that allows for higher output and allows for the possibility of the higher oil temps and resulting a de-rate till things cool back down.

Even though I have the old V-6 we never run the dash air when climbing as I strive to keep the EOT under 260F.

Another thing I will share with you is the oil change interval, don't be fooled by the MB 20,000 mile OCI, that is not for you as a fully loaded RV constitutes "arduous" duty as MB calls it, and you will need more frequent service.

If you want to know all about your chassis I suggest you join the Sprinter-Source forum where there are hundreds of Sprinter owners of varying abilities along with professional MB mechanics willing to help and share free info, making for an extremely active forum.

Thank you for the info!!! We pick up the Navion today. Our first trip will probably be over to the Sierras here in CA. We will be climbing to about 7000 feet mid day, so that should be a good test in this CA summer heat. This is my first diesel vehicle. Lots to learn. I will join the Sprinter-Source forum.

 

[bigbAZ]

Thank you for the info!!! We pick up the Navion today. Our first trip will probably be over to the Sierras here in CA. We will be climbing to about 7000 feet mid day, so that should be a good test in this CA summer heat. This is my first diesel vehicle. Lots to learn. I will join the Sprinter-Source forum.

Since you are in CA beware of biodiesel which seems to be the only option in parts of CA, although you can get away with using it it's best to stick with the green label "ULSD" which is 5% or less bio, or the renewables now sold in CA like R-99. Try to avoid B-20 especially for long term storage.

 

[Pointyears]

Thank you for the info!!! We pick up the Navion today. Our first trip will probably be over to the Sierras here in CA. We will be climbing to about 7000 feet mid day, so that should be a good test in this CA summer heat. This is my first diesel vehicle. Lots to learn. I will join the Sprinter-Source forum.

What's the break-in period for the 4 cylinder before subjecting it to arduous conditions which a 7k climb in summer certainly is?

 

[Bucket List Navion]

What's the break-in period for the 4 cylinder before subjecting it to arduous conditions which a 7k climb in summer certainly is?

Just picked it up today. Per the MB manual, break-in period is 1000 miles. It was driven from the Winnebago factory to our west coast dealer, so its already got 2100 miles on it.
First driving impression was favorable. Responsive steering and power. Trans shifted smoothly. We have a 5 mile fairly steep grade close by the house. Will give that a try within the next few days.....

 

[creativepart]

I assume that the dealer installed LFP batteries did not happen? If so you lucked out. RV dealer service departments are usually the worst place for this kind of work on your RV. (Most us us feel the same way for any kind of service work on our RVs)

As to the super cheap LFP batteries on Amazon? I know full well that prices of these have really dropped, but be careful of super cheap prices.

I don’t have a Sprinter based RV but replaced my 400 amp hours of AGM batteries with LFPs 3-yrs ago. I first went with two 200 amp hour Renogy batteries but they failed after 2-yrs and Renogy refunded my purchase. I replaced those with one 460 amp hour Epoch battery and so far all has been good.

 

[Pointyears]

Just picked it up today. Per the MB manual, break-in period is 1000 miles. It was driven from the Winnebago factory to our west coast dealer, so its already got 2100 miles on it.
First driving impression was favorable. Responsive steering and power. Trans shifted smoothly. We have a 5 mile fairly steep grade close by the house. Will give that a try within the next few days.....

Nice first impressions! You have two more gears and two less cylinders than mine so curious what the differences in the real world are (and why MB did that change). Yeah, that's the ugly side of RV purchasing. Unless you're buying from Lichtsinn, some idiot drives it halfway across the country during its breakin period.

 

[Riverbend]

I installed one 300Ah Epoch in my 2023D, and it's been great for how we use ours. I modified the step compartment only in that I closed it to the elements. I have read of others who have fit 2 of the Epoch 300's in theirs by trimming the case slightly, and with no compromise to the warranty per Epoch. Nice batteries, Bluetooth, solid BMS and they are self-heating in cold weather. The best things to remember about LFP is that you can consistently, and safely, use up to 90% of their capacity, as opposed to 50% of a LA. And they charge much faster.

 

[tandbg]

If the fridge is like the one in our 2021 Navion, the solar panels work well. We haven’t needed to extend the solar. We don’t boondock very much, but we travel long distances using the generator and solar panels (House batteries) and have not had any problems as yet!

We absolutely love the Navion, especially the kitchen. Enjoy.

 

[fanrgs]

We love our 12v fridge compared to our previous propane-electric fridges. Even in 112 degree temps in Vegas (in late September!), it keeps ice cream frozen solid! Never had that with propane fridges.

I have 350w of solar on the roof, another 200w of portable panels, and two 5-year old Lion Energy LiFePO4 105Ah batteries. We dry camp in USFS cgs. and boondock in the Rockies for portions of every trip with no problems, including using the induction cooktop and conv-micro at meal times.

Our 5 year-old propane gennie has 19 run-hours, only 1 hour while camping (on a 23-degree August morning at 10,000'), rest are exercise hours. For our RV lifestyle, the generator is basically irrelevant, just a massive extra weight. If WBGO had offered it as an option, I would have opted for a gennie compartment full of LI batteries!

 

[Bnystrom]

Hello,
We just bought a new 2025 Navion 24D motorhome and are excited to start traveling the country in it!!
Having owned a 1990 24ft class c Jamboree for 20 years, we are familiar with the lifestyle. I did most of the maintenance and troubleshooting except for the labor-intensive engine work.
I am a tech nerd with an electronics background, but this new rig intimidates me with all the new systems.
We are looking into upgrading the stock lead acid batteries to as much Lithium battery power we can fit in that small step area.

Can any of you Navion owners advise us on what to expect during the break in period?

Thanks in advance, and hope to see you on the road!!!
Ted

You can easily drop a single SFK 315Ah battery, but they just published a blog post on how they installed a pair in a 2025 View, with only minor modification to the battery cases. Sun Fun Kits DIY LifePo4 Lithium Battery Kits & Ready Made AGM / Lead Acid Replacement Batteries for RV, Golf Carts, Solar Storage, Back Up Power, Hurricane Outage . Made in Baton Rouge, LA, USA Ready to Ship out no overseas delay! Sunfunkits.com

I installed a pair of their 300HP batteries in our 2010 View last year and having that amount of battery power on-tap is a game changer!

 

[AKFred1]

Thank you for the responses! We pick the new Navion this coming weekend. The dealer is doing some upgrades for us. I will get back to you regarding the specifics as I learn more about this beast.
The big issue this week is how much lithium power they can fit into that tight step battery area.
The service guy claims two Group 24's or smaller is the only size. However later this morning he is going to see if the oneEpoch 300 will fit. If so, I'll take it.
Based on the Winni wiring diagrams, a Group 31 size will fit. Amazon has a Group 31 Redodo smart 165ah for $350. If the Epoch will not fit, I may drive it away with the stock lead acids and install the Redodo batts or equivalent myself. That 12 volt only fridge is my big concern. The rig comes with two 100 watt roof solar panels. I plan to buy a portable external 100w panel and extension cable for parking in the shade.

We picked up a 2023. Replaced the lead acid with lithium. Easy to do. With the extra saved weight you could add 2 more batteries in the inverter compartment. The 2 100 watt solar panels on the roof are probable 50 to 60 percent efficient, so extra panels are needed. I picked up 2 200 watt portable solar panels and can charge the batteries much faster. Yes the fridge does suck the juice.

 

[Bucket List Navion]

I'm curious what you think about the 4 cylinder diesel.

We finally took our Navion 2025D out for a week. Overall it was a great experience, and we love the layout!

Regarding the 4 cyl diesel, so far it seems to strain a little going up grades. The turbo kicks in and helps, but 60 mph appears to be the max speed I am comfortable with while climbing. Noticed that the engine temp didn't climb at all. Still need a steep grade on a hot day to really test the limits. Otherwise it drives smooth on the open highway. Love the 9 speed trans!
Got 15mpg on the 600 mile trip.
Thinking about new rear shocks and sway bar due to severe rocking at low speeds over bumps, etc.
Will post a couple minor "house" issues on a new thread.