r/ToyotaCHR

For those of us who have been monitoring our parasitic drain, curious who is still seeing it and who has not. Trying to determine what the common factor might be in the recent sawtooth drain stop on 8/12.

After you vote - please let us know where you are what model, its manufacturer date, and how you answered the poll!

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Here is why I am asking... I took delivery of my C-HR in late April 2026. I drive the vehicle every day, usually 25 or more miles total. I have a Level 2 charger at home that I charge the C-HR most nights so I am at full battery in the AM. Looking at others issues with the 12V battery discharge, based on their recommendations, I turned off permission for Service Connect, Insurance Connect and the wifi in the Privacy Settings of the Toyota app. I also turned off Background Data in the app settings and I Force Stop the app if I use it.

This evening I came home after a 120 mile drive and plugged in the C-HR to charge. It did not start charging even though it was after the scheduled start time for charging. When I tried to turn the car on to flip over to "Charge Now", I got the dreaded "Battery Low" indication on the multi-function display. I'm assuming that this is referring to the 12V battery. The car would not stay powered on in Accessory mode and it would not start charging. Thankfully, the traction battery still had juice in it. I turned the car on and let it sit for about 5 minutes at Ready. After I turned the car off, it started to charge after I removed the charging plug and put it back in again.

This is the first time I've had the "Low Battery" indication. Maybe this was a fluke since I have not had the issues others have described until now. At the same time, I'd like to do what I can to mitigate the problem.

If I deactivate the car in the app, what functionality do I lose? I use Android Auto exclusively for navigation and its other features. I have AAA if I had some problem on the road. Now, I'm doing majority highway speed driving so Traffic Jam Assist isn't as big of a deal as it was previously. And the remote start, lock/unlock were fun in the beginning but now I don 't care to use those features. I really like Lane Tracing Assist and the Adaptive Cruise Control. I hope that isn't a part of the "Connected Services". The C-HR is a great vehicle, but all these "Connected Services" seem like a waste to me. I don't see myself subscribing after the trials are up. I just want to do what I can now to mitigate for the 12V battery issues until Toyota issues a fix.

Hi everyone, I’ve been a very happy owner of a Toyota C-HR Plug-in for a couple of months now.

I’ve noticed that the electric range is really impressive. Driving only on extra-urban roads outside the city (50–70 km/h for around 70–80% of the journey), I managed to get exactly 100 km on electric power. That’s crazy compared to the roughly 66 km of range officially declared!

I wanted to see if you’re experiencing similar figures, or at least better-than-average electric range, or whether my results were heavily influenced by the route. The first 50 km were a round trip, so elevation changes shouldn’t have had much of an impact. The other 50 km were in a single direction and I’d say the route was basically flat, although perhaps even small differences can have a significant effect.

As for fuel consumption, even with the battery depleted, I’m getting around 25–27 km/l based on what I’ve noticed from tank to tank, with roughly 15% city driving, 55% extra-urban roads, and 30% motorway driving.

This week I’ll try driving exclusively on the motorway, keeping my speed between 110 and 130 km/h, to see how many kilometres I can manage purely in EV mode. It will definitely be much less, but I’m very curious to see the results. Regarding the latter scenario, do you have any data you can share?

I got my 2026 C-HR mid May. Shortly after I started reading about the parasitic drain on the BZ and Uncharted subs. I installed an Ancel bm200 beginning in June and confirmed I too had the drain. At the time the fix was to turn off DCM which I did by removing my car from the app. 12v drain stopped.

I never had the battery die. I drive the car 20-60 miles daily. I am located in the US.

August 9th I decided to get an upgraded H5 AGM battery so I could turn DCM back on. I was going to do the charging schedule hack but was monitoring to see what the drain looked like with the AGM. And scheduling wise I was trying to figure how I'd do it cause I change at work and I can't have an interrupt on their charger or else charging stops and won't reinitialize. I'm also on Android so the locking hack was more difficult, I was attempting to vibe code a solution.

Then on August 12th like others are reporting on the BZ/Uncharted subs, the sawtooth drain stopped. it's now been 6 days without drain.

I did see drain on the 10th and 11th after the battery change and turning DCM back on. So I don't think the drain stopped because of a reset of battery/DCM.

My app hasn't updated edit since the 8/3* and doesn't look like the car updated either. The best explanation I saw in the BZ sub was maybe they did a server side up update.

Either way I hope the fix is in and everyone sees an end to it.

So I use adaptive cruise control with lane assist a lot on the freeway in heavy traffic. Every once in awhile it says something like "lane assist not available, put hands on wheel."

Never mind that my hands are on the wheel anyway because it'sa place to put them, just not the way it wants.

The question is, what causes it to be non available. Is it seeing something? Is it something in the online built in nav?

Anyone know?

I have an iPhone 16 plus currently. I’ve never used wireless charging at home, I don’t have one of those cases with the magnetic charging ring. Do I need one of those in order to use the wireless charging? Every time I’ve placed my phone on it while driving, my phone gets SUPER hot but there’s no change to my phones battery percent. So I’ve just been placing my phone in the cup holder or in my bag while driving. I don’t use my phone while driving, but sometimes when I’m parked I’ll pull it up for Google Maps or to pull up a different playlist. Honestly wish I could just disable the wireless charger altogether so I can place my phone without it getting super hot.

Just purchase my first CHR - what are somethings I need to know? Settings I should use? Tips to maximize mileage on a charge?

Thanks!

I really loved the car but I have a 60 mile commute every day for work and my battery has died twice in the span of a few months of ownership and im not going to own a car that has a issue forever its unfortunate I hope they fix it in the future so I can buy another

It's that time of the week! Whether you just finished a car wash, found a scenic spot, or simply parked at home this is our new weekly event for sharing your C-HR photos.

Drop your photos in the comments below and show us those lines! 🚗✨

I'm starting a list of all the C-HR operating modes. Please comment with any I missed.

OFF - everything is off except intermittent data communications with Toyota and/or the Toyota app will occur.

ACC - don't ever use; it drains the 12V and you will quickly get a warning on the multi-information display.

ON - don't use except briefly such as to open or close window(s); it drains the 12V and you will quickly get a warning on the multi-information display.

READY - puts the EV in drive ready status, and while in Park it will nicely charge the 12V battery. If you exit the vehicle while still in READY, the multi-information display will ask you if you want to have it turn off in one hour. If you do not reply to say NO, it will turn off in one hour. (It's not particularly wise to say no, as you may forget to come back and turn it off.) You cannot lock the car by touching the door handle or with the key fob, but you can lock it with the metal key and then re-open it with the metal key.

Remote ON - turns on Climate but is not "READY" and cannot be driven, even with key fob in the car.

Waiting to charge mode - plugged in to power but waiting to charge based on programmed schedule. You cannot go into READY mode and cannot drive the car. You can exit and lock the car normally.

Charging mode - same as OFF except if you open the door, the charging status displays very briefly on the multi-information display (not long enough to read) and alternates with the "Door Open" warning (left on screen for plenty of time). You cannot go into READY mode and cannot drive the car. You can exit and lock the car normally. If you plug in to charge with the vehicle is in READY mode, the EV immediately turns off.

My Room mode - same as charging mode, but if you press POWER once (ACC shows, or the screen may not respond at all - weird!⁠) then press again (displays ON) (all _without_ stepping on the brake pedal), the multimedia display will ask if you want to use Climate and audio system. If you use these, you will get warnings that will either say this slows your charging or that your Climate use is using as much power as the incoming charging power.

Hello fellow Toyota CHR folk.

I picked up my new EV in May. Since then I have come out and found it fully dead twice. with a full or nearly full traction battery. Both times when I initially tried to start it I got crazy blinking lights on the dash and then bam. nothing... dead as a door knob.

both times the tow truck driver put the battery boost on it and we were able to start it.

The first time I drove it to the dealer and they kept it a couple days, said they couldnt' find anything wrong. That the 12 volt was fine yada yada.

This time I didn't drive it I had it towed and left it there. Both times I took video of the flashing dash and lights that came on. My service rep, said he thinks is looks like some kind of electronic communication issue.

However, I'm reading online that there are big problems like this with the CHR and it's common and they dont' have a fix for it?

Anyone know anything about it?

UPDATE: Dealer called and said that the 12 volt tested bad (fyi first time this happened they said it tested fine). They put a new battery in. I like my service rep and when I picked it up I told him "I think you're wrong and I'll be back". we made a bet. I said I'd be back in September. WHEN it happens again, I'm taking it in, dropping it off and calling a lemon law attorney. I'm not buying a brand new vehicle that isn't drivable or needs a "work around" to drive.

"Olá a todos, estou a ponderar a compra da Toyota C-HR+ Premium 77 kWh (2027). Vi que a autonomia prometida é de 607 km, carregamento rápido até 150 kW, e a qualidade geral parece boa. Até hoje, qual foi o problema que encontraram e foi resolvido? Quem já tem este modelo, se hoje fosse comprar, voltariam a fazê-lo? Obrigado!"