Treeman1942
New member
My battery's totally dead & I've tried everything to wake it up, but no luck. The dealer cannot pick it up until the end of the month. Any suggestions or tricks to wake up the battery?
2025 NAV4e, Dead Battery
- Thread starter Treeman1942
- Start date
Kenpcfl
Member
Check the fault/error indicator code lights on the charger. Also the simple stuff like the fuses, run/tow switch position etc.
Did the voltage drain to completely empty? If so, the smart charger may not even sense enough voltage to begin charging.
Also, the NAV has a secondary 12v battery that could create an issue if it dead or off line.
Since it's still under warranty, I wouldn't try too much troubleshooting at this point.
Let us know the outcome...
Did the voltage drain to completely empty? If so, the smart charger may not even sense enough voltage to begin charging.
Also, the NAV has a secondary 12v battery that could create an issue if it dead or off line.
Since it's still under warranty, I wouldn't try too much troubleshooting at this point.
Let us know the outcome...
Treeman1942
New member
Thanks so much for that information. I followed the "wake-up procedure" several times. Where is the 12 V battery located? The dealer won't be able to look at the machine until 21 April. The battery is not totally dead, lights work, but just the red light on the bottom of the gauge is on.
Kenpcfl
Member
I believe the 12v battery runs the lights, radio and horn. I could be wrong there, but it makes sense. I plan to purchase the full service manual when my warranty runs out, as I enjoy working on my equipment.
The 12v battery is tucked away behind the dash driver side front corner. Not easy to get to because everything has to come off, and I mean everything! Windshield, dash radio cover, radio, top dash and front dash.
When I accessed mine, I found both battery wires very loose on the battery and the 12v buss bar. Doesn't make sense to me that that this battery would prevent charging the mains, though.
Could it likely be your charger?
The 12v battery is tucked away behind the dash driver side front corner. Not easy to get to because everything has to come off, and I mean everything! Windshield, dash radio cover, radio, top dash and front dash.
When I accessed mine, I found both battery wires very loose on the battery and the 12v buss bar. Doesn't make sense to me that that this battery would prevent charging the mains, though.
Could it likely be your charger?
Treeman1942
New member
Okay, I just went out and went through the wake-up procedure several times, but still no luck. I'm now thinking the charger may be the issue.
Kenpcfl
Member
Yes. I believe it's either the charger or the charger is sensing to low of a voltage to begin charging. Had that issue once on an EZGO lead acid cart, where I had to find a non-smart charger to get enough charge going before switching back to the smart charger. (portable car jump starters have a bypass button for just that scenario).
On pg 51 of the NAV manual, it says how you read the fault codes to determine this. It has a battery voltage too low code.
Also here is a link to the charger manufacturers operating guide:
On pg 51 of the NAV manual, it says how you read the fault codes to determine this. It has a battery voltage too low code.
Also here is a link to the charger manufacturers operating guide:
Treeman1942
New member
Thank you, sir! I have a regular car charger, so do you think I should hook it up to the NAV 4 to get a little charge, and for how long?
Kenpcfl
Member
I'm not up to speed on the lithium batteries, so I don't won't to steer you wrong. There's lots of info online and on YouTube regarding jumping them.
Kenpcfl
Member
I went outside and looked at the batts. There is a button on the top of each one which appears to cycle off/ on. Maybe something you should try, as a possible reset of the onboard mngt system of the battery.
Kenpcfl
Member
This is the battery user guide:
IP_PROTRX_User_Manual_M-48V60-TRX-HD_2025-05-27_V2.15_WEB.pdf https://share.google/pmDjgllxFKwDpfMv4
IP_PROTRX_User_Manual_M-48V60-TRX-HD_2025-05-27_V2.15_WEB.pdf https://share.google/pmDjgllxFKwDpfMv4
Treeman1942
New member
While waiting for my service appointment, I continued the attempt at charging the NAV batteries. I found that the charger has a reset button and the batteries have wake-up buttons, so after pressing the reset button on the charger & the battery wake-up buttons, the batteries charged. I don't know which of those procedures did the trick. A special thanks to Kenpcfl for his tips on the NAV issue. I took the nav for a two-hour ride last evening, and I'm now back in love with it.
Kenpcfl
Member
Yay! Glad you delved into it and found the solution. Looks like the onboard battery management system went into a protection mode due to low voltage. Apparently there is a heating system in the batteries for cold weather, and perhaps that ran them down in your cold weather. Even here in north Florida I've noticed the battery meter going down when the cart was parked for cold weather.
Treeman1942
New member
Treeman1942
New member
Yep, you're right on that. I'm age 84, and everything is slipping a little, mentally, physically, etc. In reality, I could have inadvertently left the key on, but I'm almost positive that I left the cart in reverse with the key off. Nope, I just remembered that I always take the key out when I park it in the barn. Yes, my old brain is fading, but I'm very happy to have lived this long. I've driven the NAV4 for 4 hours during the past few days, and it's working perfectly. I also have a Kawasaki Ridge Camo, but I far prefer the NAV4 in warm weather; the Ridge is too loud and bothers my rescue dog's ears, GG; she loves the NAV4. Thanks again for sending those links, which were a great help. Taking the battery cover off was enlightening in many ways. I could find nothing in the manual about the wake-up buttons on the batteries, but they're in plain sight once you remove the battery cover.