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

Jonathon Ramsey — Sun, 06 Jan 2013 09:00:00 EST

Filed under: Government/Legal, Safety, Mercedes-Benz, Volkswagen

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.

Honeywell and Dupont pointed to the years of successful tests and accused Daimler of deliberately staging its test so that the car would catch fire - various fluids in an engine will catch fire if sprayed on the engine in a certain way - suggesting among other things that Daimler didn't want to pay the higher cost of the R-1234yf coolant. At least two other German and Austrian testing agencies have cautioned against the new chemical, a German firefighters organization has lobbied to have it banned while a rival German firefighters organization has cleared it for use, some German authorities are asking that automakers be given more time by the EU to conduct more tests, and it's reported that 13 carmakers have begun their own testing based on Daimler's initial findings.

A report in Bloomberg says that Volkswagen has joined Daimler in refusing to use R-1234yf in its cars. There aren't any 2013 VW models that fall under the EU mandate for use this year, so the fact that VW is speaking up means it wishes to lodge a vocal protest. Other automakers are still committed to the new chemical; Buick, Cadillac, Chevrolet and GMC are still switching over in 2013, and Toyota in the EU has gone on record saying it hasn't found any safety issue with R-1234yf. The EU says it will enforce its decree, but no penalties have been mentioned for any automaker defying the order. Honeywell and Dupont are waiting to see what will happen, a Honeywell manager saying, "The key element for the EU government is forcing the implementation of their rule."

VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes originally appeared on Autoblog on Sun, 06 Jan 2013 09:00:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mercedes recalling 2013 SL-Class over air conditioning issue

Jeffrey N. Ross — Tue, 09 Oct 2012 08:27:00 EST

Filed under: Convertible, Government/Legal, Recalls, Mercedes-Benz, Luxury

Last week, Daimler announced that it would be sticking with R-134a refrigerant in its cars due to some tests it conducted that showed the newer, more environmentally friendly R-1234yf ignited in certain crash tests. Apparently, this R-134a replacement had already been installed in the 2013 Mercedes-Benz SL-Class, so the automaker is electing to issue a recall for a small number of SLs to replace the refrigerant. While the National Highway Traffic Safety Administration announced the recall, this worst-case scenario crash was only verified by Daimler, and the refrigerant recall is not yet affecting any other automakers.

Since the two refrigerants are interchangeable, all Mercedes-Benz dealerships will have to do is replace the R-1234yf with R-134a and swap out the A/C lines. Mercedes-Benz will be notifying owners this month whose cars were built between December 19, 2011 and May 31, 2012; NHTSA states that only 432 cars will be affected.

Currently, General Motors is the only other automaker in the U.S. using the R-1234yf (in the 2013 Cadillac XTS and 2013 Cadillac ATS in addition to the European-spec Chevrolet Malibu), and it has responded with a statement of its own regarding this matter:

"The safety of our vehicles and our customers is GM's highest priority. The new vehicle refrigerant, called R-1234yf, was evaluated and tested over many years through industry-wide cooperative research programs with organizations such as SAE and other independent engineering organizations and involved 10 major global automobile manufacturers including GM. We believe these tests demonstrate that R-1234yf is a safe, effective and environmentally beneficial motor vehicle air conditioner refrigerant for our future vehicles. However, we are trying to learn more about the Daimler test experience and will, of course, make any decisions and take any actions with our customers' safety in mind."

We're sure this isn't the last we've heard on this topic, so stay tuned. In the meantime, scroll down to see the official recall announcement from NHTSA.

Continue reading Mercedes recalling 2013 SL-Class over air conditioning issue

Mercedes recalling 2013 SL-Class over air conditioning issue originally appeared on Autoblog on Tue, 09 Oct 2012 08:27:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments