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VW recalls 220,000 Atlases, Atlas Cross Sports for airbag defect [Updated]

[Update: Audi of America has confirmed that no U.S. models are among the recall population for plug-in hybrid fire issue.] Volkswagen has issued yet another recall for its Atlas SUV, this time for side airbags that may not deploy correctly in an accident due to a problematic connection in one of the vehicle's wiring harnesses. The campaign covers 222,892 Atlas and Atlas Cross Sport models built for the 2019-2023 model years.  The issue stems from a connection with the wiring harness that runs from the A-pillar into the door. VW says that harnesses produced by one of its suppliers were not built with additional measures to prevent movement at the connection point. Small movements can cause abrasion of the metal contacts which could lead to a whole host of electronic misadventures, including the potential for airbag deployment to be delayed in a crash.  "Micro-movement of the wire harness (terminal A-Pillar to front door) can result in damage to the wire terminal surface. Damage to the surface can [result] in fretting corrosion which may cause sporadic interruption in the electrical connection to the components of the front door," VW said in its defect notice. "The airbag warning light may illuminate if a malfunction is detected. Other symptoms of a sporadic interruption of the affected electrical connection can be: inadvertent rolling down windows, inadvertent park brake engagement at low speeds (below approx. 3km/h or 1.8mph), warning regarding faulty door sensor," VW said.  Not every model built within the range defined above is subject to the recall; terminals from other suppliers were manufactured with the necessary safeguards in place. If you own a 2019-2023 Atlas or Atlas Cross Sport, keep your eyes peeled for a notification from VW regarding the campaign, likely some time in early-mid May.  PHEV problems Across the Atlantic, the VW Group mothership confirmed that it will recall more than 100,000 plug-in hybrid models worldwide to address a fire risk. The recall was launched in response to 16 reported incidents of fires stemming from insufficient insulation of the PHEV battery pack that allows the engine cover to make contact if it is not completely secure. If that happens, the heat from the battery can ignite the engine cover. The recall will cover PHEVs build by VW, Audi, Seat and Skoda, Reuters reports, including the VW Passat, Golf, Tiguan and Arteon — plug-in variants of which are not sold in the United States.

To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.