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How to fix a $4,000 hybrid battery problem with vinegar and baking soda

This is one of those 'Don't try this at home if you don't know what you're doing' DIY tales. Two weeks after imgur user "scoodidabop" bought a used Toyota Camry Hybrid with no warranty, he got the Christmas Tree dash display with warnings like "Check VSC System," "Check Hybrid System," and the Check Engine light. After some Internet sleuthing he figured it could be a faulty brake actuator, assuming the hybrid system warning was a false alarm. But it wasn't the actuator, it was the battery, a Toyota dealer telling him that his battery had "gone bad," and he'd need $4,457 to replace it. Then he had a brainstorm: it could be one of the cells that's gone bad, not the whole battery. Scoodidabop has some experience as an electrician, so he figured he could test it and replace any bad cells for about $45 apiece. He removed the battery unit from the trunk and over the course of two hours tested all 68 cells four times. He found nothing wrong. So he devised another type of test and checked every cell again. He couldn't find a problem with any of them. Turns out the problem wasn't in the cells, but with the dirty and corroded copper connectors at the ends of the high-voltage cables. He pulled the 34 connectors and their steel nuts, soaked them in vinegar, gave them a light steel wool scrub, soaked them in baking soda and water to counteract the vinegar, applied an anticorrosive and reinstalled them. That took an hour. When he replaced the battery, the warning lights had all gone out and the battery worked perfectly. Skill level: experience. Cost: less than $10. Perhaps it's time for hybrids to be able to test their own cells individually. Dealers, too.

Production Mazda Vision Coupe concept, GRMN Supra, new BRZ/86 coming

After writing about what's in store for the next-generation Subaru WRX, Japan's Best Car magazine is back with more spy work on what's ahead for the coming Mazda sedan, fighting-spec GRMN Toyota Supra, and next-generation Subaru BRZ/Toyota 86. All three are supposedly headed for previews at this year's Tokyo Motor Show before rolling out in 2021 and 2022. Mazda showed the Vision Coupe concept at the 2017 Tokyo show, then sneaked a mention of a rear- and all-wheel drive "Large Architecture" and two inline-six engines into a 2019 investor's report. Best Car says that concept's production version will house a 3.0-liter Skyactiv-X SPCCI inline-six with "M-Hybrid" 48-volt assistance. Output figures remain a mystery, but the mag says engineers are aiming for 345 horsepower. The real deal isn't slated for dealers until 2022, bringing what Mazda bills as a "BMW, Audi quality car at the price of Volkswagen." A further treat: Best Car says the Hiroshima automaker is laying out a two-door version on the same platform. Not even a month after 2020 Toyota Supra chief engineer Tetsuya Tada told us, "With a sports car, the promise is to offer more performance with each additional version," this report says the full-fat GRMN Supra will raise the stakes. Expected in the latter stages of 2021, the current 335-hp Supra will get an "output eventually close to 400 ps" (about 394 horsepower) from its BMW-source 3.0-liter straight-six. Along with that will come a lighter, stiffer body, and a sportier suspension tune to manage and make the most of the 60-horse increase. Best Car says the next-generation Toyota 86 / Subaru BRZ will move to a new platform, without specifying whether it would be Toyota's TNGA platform suggested by a report in April — not that there are many other options. Neither the footprint nor the body dimensions are predicted to change, and transmissions will continue to include a six-speed manual and a six-speed automatic. The new platform will hold a new engine, although it won't be the revelation many fans want. The magazine says the Subaru 2.0-liter FA20 will retire, making way for the Subaru 2.4-liter FA24. The FA24 is the same engine in the Subaru Ascent crossover, where it produces 260 hp and 277 lb-ft. There'll be no such fireworks for the sporty twins due in the first half of 2021, output reported to be "improved to 220 ps," or 217 hp — a 12-hp bump over the current figure.

Mini Minor to be co-developed with Toyota

It was back in 2011 when Mini first showcased the prospect of an even smaller hatchback with the Rocketman concept at the Geneva Motor Show. In the nearly four years since, parent company BMW has hemmed and hawed on the possibility of putting it into production, but the latest word from Europe has it that the project is a go. According to Automobile magazine, Mini is realigning its product portfolio into five pillars: the essential hardtop we've already seen (available in two/three- and four/five-doors), the convertible, the upcoming new Clubman wagon (coming this summer with full-size auxiliary suicide doors on both sides), the next-gen Countryman crossover in 2016 and two new model lines. One will be the production version of the Superleggera roadster concept, earmarked for 2018. The other will be the Minor, a smaller city car reviving a long-gone model name and presaged by the aforementioned Rocketman concept. But for that last one, Mini won't go it alone. To develop the mini Mini, BMW will reportedly turn to its partnership with Toyota. The relationship is already set to yield a new Supra and Z4 and share fuel cell and other technologies. But this would broaden the partnership to include a small hatchback. However rather than use the existing (or next-gen) Aygo, which is already built under joint venture with PSA Peugeot Citroen (with which BMW previously had a joint engine venture), word has it that the BMW and Toyota will develop a new platform for the project – one that will be used by both partners. The new product plan doesn't leave much room for the Mini Coupe and Roadster (which have already been discontinued), for the Paceman three-door crossover (which will suffer the same fate) or for the projected seven-seater minivan. But the addition of the new Superleggera roadster and super-mini Mini aren't likely to leave us wanting for either. Related Video: