2024 Mazda CX-50

I'm curious how many other Mazda owners are dealing with the same battery drain issue. I'm now on my third battery since 2024: Factory battery replaced under warranty in 2025. Second replacement purchased in March 2026. Within a month, the "Battery Low - Drive Vehicle to Recharge" warning was back. The dealer kept my vehicle for four days to monitor it, but they couldn't find anything abnormal. This started long before I had a dashcam professionally installed, so that's not the cause. I've read numerous posts on Facebook from other owners mentioning: A door module that can get wet after heavy rain and cause a parasitic battery drain. The key fob constantly communicating with the vehicle when it's within about 20 feet, potentially contributing to battery drain. I mentioned the door module issue to my dealer, but they said they had never heard of it. At this point, it's becoming incredibly frustrating. A modern vehicle shouldn't be going through batteries like this, especially when the dealer can't identify the root cause. I started to document the times that my dashboard warning pops up that the battery is low.

The vehicle had the original OEM battery fail at 15 months. It dropped to 7v under light load. It's a bad battery. Upon being jump started, the power steering went in and out while driving and the dashboard blinked on and off...throwing a lot of errors that are unrelated to the battery problem. The failure state of the vehicle with a bad battery is unlike any vehicle I have ever seen and it is extremely dangerous. Furthermore, Mazda roadside assistance does not know about this issue and only offers jumpstarts, putting customers into danger by suggesting that the vehicle is safe to drive with a battery that is not stable.

The contact owns a 2024 Mazda CX-50. The contact stated that while reversing at approximately 2 MPH into a parking slot, the rear back up sensor warning was illuminated. The contact stated that the sensor was designed to alert the driver whenever the vehicle was too close to an object. The contact stated that the rear collision braking system warning was also illuminated. Additionally, the contact stated that a factory installed trailer hitch warning was also illuminated intermittently. The contact stated that the electrical failure was intermittent and occurred at various speeds. The contact stated that while depressing the brake pedal, the front brakes were making an abnormal rubbing sound. The contact stated that after releasing the brake pedal the sound stopped. The contact stated there was no warning light illuminated. The contact had taken the vehicle to a local dealer, who was unable to duplicate the failure. The contact stated that the vehicle had been taken to the same dealer several times. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure. The failure mileage was 13,522.