2022 Tesla Model 3 Long Range, about 68,000 miles. Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the clea…
2020 Mercedes-Benz E-Class E450, about 98,000 miles. Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank.
2017 Audi Q7 3.0T, about 130,000 miles. Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals look clean. What would you want to…
2025 Honda Civic Sport Touring Hybrid, about 18,000 miles. Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific data would you inspect before…
Got a 12V-related service warning and the truck otherwise wakes and drives normally. For people who've dealt with low-voltage issues, did you risk driving to service or treat it like a potential bric…
I can charge at work sometimes but not at home. For people living in apartments, what combination of public charging, workplace charging and occasional fast charging has actually been practical? Tryi…
Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific data would you inspect before blaming the high-voltage battery? I am in Seattle. I am tr…
Rear tires are wearing noticeably faster than I expected even though alignment is supposedly okay. I know weight and torque don't help. Has anyone improved life with rotations, pressure changes, or a…
Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals look clean. What would you want to measure during the actual failure?
This started as a small annoyance and I finally decided to track it down. 1988 Toyota Land Cruiser FJ62, about 242,500 miles. Twice I have had full lights and accessories but no crank. After waiting…
On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pack is warm. Could this be charger-side variation, battery temperature, software, or an ac…
Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific data would you inspect before blaming the high-voltage battery? If I figure it out I wil…
Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals look clean. What would you want to measure during the actual failure? I am…
The car carries pets and sees dusty conditions. Is inspecting or cleaning the battery cooling intake/fan a reasonable preventive job when the service procedure allows it? Mileage is about 112,000.
2019 Audi S4 Premium Plus, about 141,000 miles. Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the cleanes…
2025 Honda Civic Sport Touring Hybrid, about 15,000 miles. Same commute and driver, but average MPG is down noticeably.
Dash range changes with temperature and driving, so I'm looking for a better way to judge battery health. What data do you trust—usable kWh, charging energy, service-mode values, repeated range tests…
2024 Polestar 2 Long Range Dual Motor, about 23,500 miles. Displayed range moves too much with weather and recent driving to be a useful health metric by itself. What repeatable measurements do you t…
A software update finished overnight and this morning I got a low-voltage battery warning. Main battery is charged. Before scheduling service, is there anything safe to check in the app/service menu?…
Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific data would you inspect before blaming the high-voltage battery? I am in Brooklyn. Mostly…
