[KAB]

Got my CX-30 June 19. Mexico built 04/21. Had the low battery warning a few times now, but have not had any problem starting. First week got it while messing around checking things out. 6/4 I washed it and got it again. Then this past weekend I camped out at a car show and it was a total pain! I was selling parts and slept in the passenger seat 1 night. Got the alarm while loading boxes at home Wednesday. Drove enough in between that it should have been charged up. Then at the show, I unloaded and was in and out of the car several times when it went off again. I did run the car, but could not drive anywhere to charge it. Did not know about the 5 minutes or fuse pull option. Anyway, while the passenger seat is quite comfy, it's not exactly a bed, LOL. So sleeping was difficult enough without the darn alarm carrying on if I opened the door! Was not happy!
I go back to dealer this week for ceramic coating. Will be discussing and find out if any updates need to be done.

 

[KAB]

What 5 minute option?

Service Alert attachment in post #35 of this thread says you can drive or idle 5min to clear it.

 

[KAB]

Thank you. I missed that. providing i do not leave doors open for any length of time , i stopped this lo volt alert by always keeping the key fob in a faraday pouch when fob is not in use. Seems stopping the car and fob from "talking" all the time has also stopped the alert.

It says it goes off when the timer accumulates 30min awake time. I guess the key waking it up i seen the same as door open time. It also mentions adding 5 min for each occurrence. But I think it only adds that with each wake-up. Otherwise 6-7 brief door openings would trigger it. I experimented yesterday and that is not the case. I opened doors approx 12 times over about a 20min period before it triggered. So I'm thinking it added the 5 min 2 times.
I did have the key in my pocket when I washed it and noticed it beeped (not the alert) a few times as I worked around it. At the car show I was near it with the key much of the time. Your bag idea could work in a situation like that where I had no way to keep the key away from the car.

 

[KAB]

Is there any way to turn off the light inside the back? Also would love to know where the switch/sensor is that lets it know it’s open so I could bypass it and leave back open.

 

[KAB]

Was at the dealer today. Service people acted brand new. They printed and read the service alert. Basically read it back to me that its working correctly. Said there are no updates available for mine…

 

[KAB]

I get this nag chime whenever I'm in and out of the car for extended periods of time with the engine off. Never had trouble starting the engine afterwards. I'm not worried though I suppose I could pop the hood and check the battery voltage to be sure.

I have checked my battery voltage. Running/charging at about 13.5. Just after turning off I usually see 12.6-12.7. Whether sitting an hour or a day. With or without alert, I get 12.4 most of the time. From my understanding, the alert has NOTHING to do with the battery actually being low. It's just seeing doors open activating the computer and telling you you MIGHT have run down the battery. It would be so much more useful if it just measured the battery and told you if it was low. From the posts I read, it seems they resolved some actual battery drain issues. The alert is definitely still an issue. mine did it again yesterday after i washed it

 

[KAB]

I drive my CX-30 45 miles to work and 45 miles home, twice a week.

If I park it and do not open anything for 4 or 5 days, I never get the low battery warning.

If I do clean her or open the rear hatch a few times, I always get the low battery warning.

It has never failed to start but I do carry a battery jump box, just in case.

I agree it is way too sensitive and is very annoying but have learned to live with it.

I have had the car a month now. Driven almost 1000 miles. My daily trip to work is 17miles -about 30 minutes. No, I don't get the alert between normal daily driving, but it has happened multiple times now. This is my first new car in a long time. I understand the need for more battery awareness, but I don't believe other cars give an alert for washing your car or leaving the liftgate open just long enough to load for a trip. It has started every time, but I may get a boost pack for insurance. I park outside, so a battery tender is not practical. (and I really don't think it's going low anyway-just too much open door time and needs reset) I have no intention of taking 50mile rides to nowhere, wasting time and fuel just to charge my battery. I just wish they would reprogram it to actually read if the battery is low.
I completed a survey last night that they emailed me. Gave my 'constructive criticism' on the matter...

 

[KAB]

I charged my battery for 24 hours on a Tender and still had the warning on Sunday morning (Tender says charged). Left the charger connected for another 24 hours and this morning still had the alarm. Disconnected the tender and took a short 13 mile drive "to nowhere" (LOL) and put the car back in the garage. Locked it, took the fob 200+ feet away. Checked several times today by opening the driver's door and the hatchback. No warning since driving it.

And that make sense according to the service alert statement. Because it isn’t looking at the battery- no amount of charging will clear it. Needs 5 minutes running.

 

[KAB]

Chrysler's system also gives us another piece of data to deal with, SOF ( state of function). That is the lowest voltage seen by the engine control module when the starter first engages. In the first .003-.005 seconds of engagement the current flow is usually 600-800 amps and that pulls the battery voltage down relative to the battery's true health. Even though we don't see that data pid with the Mazda system, they are very likely to also be capturing that information on start-up.

I don't now the specific parameters Mazda checks, but I assumed they are monitoring stuff like this. Aside from the alert being annoying, it is disappointing that they base it on door openings when it could be looking at actual battery strength. As I mentioned previously, I measured 12.4v 'resting' voltage on mine. While that is plenty to start it, I'd expect that to be closer to 12.6 on a new battery. I will check it again soon. Maybe I'll run a charger on it and see if it holds a higher level. I measured the same 12.4v after tripping the alert by opening doors.

 

[KAB]

They don't want the battery at 100% state of charge. At that level it cannot absorb voltage spikes easily. 12.4-12.5 would be the normal range to keep the battery at. There is so much more to power management systems than just about everyone realizes. The updated training classes for professional technicians who are already very knowledgeable about vehicle charging systems is 24 hours in length. That BTW is just the 12v systems, non start/stop. By the time we start talking start/ stop and add in 48v and hybrids it's a staggering amount of information to have to study.

Hmmm, well thanks - guess I won't be charging it then...lol

 

[KAB]

Good News! I got through a thorough car wash without an alert yesterday. I did not vacuum, or do anything interior. But this did include wiping down all door jambs. So they were opened for a while. The one big difference was I laid the key fob down in the garage 20+ feet away. I know when I washed it before and had fob in pocket, the car beeped several times when near/touching doors. Figuring I probably had pretty much used the half hour 'awake' time before I ever opened a door...

 

[KAB]

I was just out putting a seat cover on. Before doing so I was checking some stuff under the hood. So, I was probably at it over the critical 30min. Alert, alert, alert. LOL Yes I had the fob in pocket and offended the battery gods. I get that it's just the way it is, and I say it's ridiculous. Guess I will keep hoping for an update to change it. 😒

 

[KAB]

If this is the biggest issue we have to deal with, life's good!! Loving this machine! Put in the Mazda floor mats and cargo liner. Mazda Splash Guards (mud flaps) are next. What seat covers did you go with? I'm going to start with seat cover on the back seats to protect them from "stuff" I throw back there. Won't have passengers, so it's just convenient storage.

I agree, overall I love the car!

 

[KAB]

My CX30 Turbo has gone into low battery mode overnight the last 2 days. Only 650 miles on the vehicle. I've parked the vehicle, unplugged all accessory cords, locked the car - that's it. In the morning I am getting a Low Battery Warning. Also I want to mention that the app will not work once the vehicle has received the Low Battery Warning. So if you wanted to start the vehicle remotely to charge the battery you can't which to me is even a bigger glitch.

Are you doing things in or even near the car after you shut it off? It adds extra minutes with each ‘wake up’ till it reaches 30 min. It won’t restart the timer till it runs for 5 minutes. Even if that is days later.

 

[KAB]

I should have asked. Is it actual low battery, or the ‘risk’ warning? The latter is what I am referring to above. In which case, it will likely not have a low battery and will start fine.

 

[KAB]

It's a Low Battery Risk, Start Vehicle to Charge 12V Battery.

As annoying as it is, I have always been around mine and ‘caused’ it. Washing, vacuuming, loading/unloading…. That seems to be the situation for most of us with this complaint. Need to figure out for certain if somehow you ate ‘waking it up’. A few have said just having the keys too close to the vehicle at night did it

 

[KAB]

Now that I know it is an 'alert' and not a real alarm, it is getting a little easier to ignore...
Just tested mine again this morning (washed the car, lol) Afterward I took my wife to the local garage to pick up her car that was done being inspected. 2-3 minutes up and turned off to go in and pay. Then same run back home. Turned off and opened the door. Still had the alarm since I had not run more than 5 min continuous.
Also keep in mind it adds 5 minutes to actual door open time each time it is woken up to get to that 30 minutes. So it tallies up pretty easy.

 

[KAB]

Very funny Mazda. We get an alarm stating 12v battery is low and that we must start up the car, and drive 100km to charge the battery???? Meanwhile we just wasted 100km of gasoline? That is the fix? The other recommended fix is not to worry about it the app is not dependable, until it happens to someone. I just purchased a Mazda 3 that had a build date of July 2021. And I have the problem and so funny this is the message, read the last sentence View attachment 2930

It is pretty much useless. But, you only need to run it 5min. And you don’t need to do it right away. Your next trip at least that long will clear it. I just wish we had an alert with actual battery charge instead of this ‘risk’ thing

 

[KAB]

DEAD BATTERY ISSUES
Yes, My CX 30, Brand new, would not start the day after I drove it home from the dealership.
Dead Battery.
Was told by the dealer that there was nothing else wrong with the vehicle after they replaced the battery.

6 weeks later "LOW VOLTAG RISK, START ENGINE" repeatedly came on when I parked the car or if the liftgate was open.

Lots of details in this thread, but to summarize: The dead battery and the alert are separate issues. The Alert is based on how many times and how much time the computer is woken up without the car running. It is doing what it is programmed to do. It is not monitoring actual battery condition. Clears with 5 minutes of run time. I just ignore it and let it clear next time I drive it. No need to waste fuel.

 

[KAB]

BTW without pulling fuses there is no way to turn off the rear tailgate light [open] when vacuuming/cleaning
not that its going to lessen activation of the chime anyway.

I was considering putting a switch in to kill that light if I want to leave the hatch open. But, all lights are LED and could be on fo many hours without a significant drain on battery. Now if you could figure out how the computer knows the hatch is open and bypass it, that would keep it from adding to the alert’s trigger minutes.