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Mazda CX-5, Mazda6 and Mazda3 could stall due to software glitch

Mazda is recalling 262,220 vehicles due to a software error that could cause the engine to unexpectedly stall out. The recall affects 2018-2019 CX-5 crossovers, 2018-2019 Mazda6 sedans and 2019 Mazda3 models.  According to NHTSA recall No. 19V497000, which was filed June 27, a programming issue in the powertrain control module (PCM) on select Mazda vehicles could cause the engine to shut down. More specifically, "the software controlling the hydraulic valve clearance adjuster may operate improperly when transitioning from cylinder deactivation to full cylinder activation modes." This could potentially cause the intake valve rocker arm to come out of position and hit something else in the engine. If this occurs, the engine could misfire, the engine could lose power, and the Malfunction Indicator Light would be triggered. The recall affects 143,004 2018 CX-5s, 81,236 2019 CX-5s, 18,295 2018 Mazda6s, 2,551 2019 Mazda6s, and 17,134 Mazda3s. Some cars from those model years received the improved software at the factory and won't be affected by the recall. Although the first report of a related issue was chronicled in January 31, 2018, no injuries tied to the problems have been reported. Mazda is expected to start its recall on or before August 26, 2019, and will reprogram the PCM with improved hydraulic valve adjustment control programming for free. Contact Mazda at 1-800-222-5500, reference No. 3719F, for more information.

Toyota, Mazda form electric car technology venture

TOKYO — Toyota has established a new venture to develop electric vehicle technology with partner Mazda, seeking to catch up with rivals in an increasingly frenetic race to produce more battery-powered cars. Policymakers in key markets like China are pushing a shift to electric cars over the next two to three decades, while relatively new rival Tesla is gaining momentum and diesel cars are going through the fallout of the Volkswagen diesel scandal, pressuring traditional automakers to crank up plans for fully electric vehicles (EVs). At the same time, declining battery costs are enabling more power to be packed into cars, making an electric car future easier to imagine. Toyota said in a statement the new company will develop technology for a range of electric cars, including mini vehicles, passenger cars, SUVs and light trucks. Toyota will take a 90 percent stake in the joint venture, called EV Common Architecture Spirit Co Ltd, while Mazda and Denso Corp, Toyota's biggest supplier, will each take 5 percent. The plans build on a partnership announced in August when Japan's biggest automaker agreed to take a 5 percent stake in Mazda and two said they would jointly develop affordable electric vehicle technologies. Although Toyota is providing most of the financial firepower and existing EV know-how, Mazda's engineers have gained the admiration of the industry with breakthrough technologies such as its compression ignition engine announced last month. Shares in Mazda surged to end the day 3 percent higher, while those in Denso rose 1.8 percent. Toyota shares were flat. Both automakers are somewhat behind rivals, with neither having a fully electric passenger car on the market yet. After years of focusing on bringing hydrogen fuel cell vehicles to the market, Toyota last year set up a division to develop electric cars which is led by President Akio Toyoda, and said it plans to introduce EVs in China in the coming years. Toyota has also announced it will bring a game-changing solid-state EV battery to market by 2022. That division would continue as a separate entity from the new joint venture, a Toyota spokeswoman said, while adding that the two teams would co-operate on technology development. Mazda has an R&D budget a fraction of Toyota's, which has made it difficult to develop electric cars on its own. Even so, it has said it plans to launch EVs in 2020.

Watch what happens inside a rotary engine

Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine. And there's hardly a better way to become reacquainted than by peering into a running rotary engine, which you can do with the video above. The video comes to us from the YouTube channel Warped Perception. The channel has already shown what happens inside a conventional internal-combustion piston engine by putting a clear cylinder head on top of a flathead engine. This new video shows off the rotary engine by adding a clear side to a tiny model-airplane engine, something that we weren't aware existed and are glad to know about now. Despite the tiny size, the engine is functionally almost exactly like the bigger versions you'll find in Mazdas from about 1967 to 2012. It has intake and exhaust ports on the edges of the rotor housing, and the triangular rotor swings about in a peanut-shaped housing. For maximum effect, jump to right around the 7:40 timestamp. This is the point at which a bit of acetylene is added to the air-fuel mix for a brighter flame. It's at this point that you can really see when the mixture combusts and how the pressure of the flame pushes the rotor to produce rotational motion. Each stage of the video does slow things down to make everything as clear as possible. Even if you already knew how rotary engines worked, it's still fascinating to watch, first because it's something you don't get to see usually, and also because of the engine's elegant simplicity. Related Video: Image Credit: YouTube / Warped Perception Weird Car News Mazda Technology Videos rotary rotary engine