NHTSA closes probe into 2011 Porsche 911 coolant leaks

2010 Porsche 911 Turbo

The National Highway Visitors Safety Administration has announced that it will finish its investigation into speedy coolant loss in 24,635 Porsche 911s built in between 2001 and 2011. The versions affected integrated the normal 911, GT2, GT3 and Turbo, as well as their variants (GT2 RS, GT3 RS and Turbo S).

NHTSA was investigating for “quick coolant loss caused by coolant pipe-fitting failure, allegedly resulting in vehicle disablement and/or loss of car handle due to decreased traction for the impacted car or following traffic,” in accordance to the regulators site. “Most of the leak complaints did not appear to involve complete separation of the fittings and numerous have been detected when the automobile was parked,” mentioned NHTSA’;s statement.

There have been 63 complaints and 336 guarantee claims, even though the investigation was initiated soon after 10 complaints from buyers. There have been no reports of crashes or injuries attributed to fast coolant loss.

“A safety-associated defect has not been recognized at this time and more use of company assets does not seem to be warranted. Accordingly, this investigation is closed. The agency will monitor this situation and reserves the proper to get further action if warranted by the conditions,” NHTSA stated.

Scroll down for the much more technical explanation in NHTSA’;s official bulletin.

On April 26, 2013, the Workplace of Defects Investigation (ODI) opened PE13-009 to investigate 10 complaints alleging incidents of sudden coolant reduction whilst traveling on public roadways in particular model yr (MY) 2001 by means of 2007 Porsche 911 automobiles. The complaints alleged that pipe ends joined by epoxy to specified cooling technique parts could fail all of a sudden and separate, resulting in huge volumes of coolant leakage. The investigation was opened to assess evidence of a style or manufacturing defect in the coolant pipe fittings and any relevant safety consequences. In response to ODI?s Data Request letter, Porsche recognized a manufacturing quality issue with the supplier?s application of adhesive to coolant pipe fittings that resulted in elevated failure costs in around 6,800 early production 997 generation vehicles (MY 2007 and early MY 2008). ODI?s examination of discipline information showed that the age-adjusted failure rate for these autos was approximately 6 times better than MY 2001 by means of 2005 996 generation vehicles and MY 2008 through 2011 997 generation vehicles developed following a method improvement for adhesive application was implemented by the supplier. Most of the leak complaints reviewed by ODI did not seem to involve comprehensive separation of the fittings and numerous had been detected when the automobile was parked. There were no crashes or injuries reported to be related to the alleged defect in any of the subject autos. ODI recognized 2 allegations that coolant leakage resulted in reduction of control incidents, but neither concerned autos impacted by the assembly process good quality problem. A third reduction of management allegation involving a motor vehicle built for the duration of the period affected by the supplier method concern is not counted because ODI was unable to contact the proprietor to verify the incident. See the full closing resume in the document file for PE13-009 for added info about the topic cooling technique and ODI?s analysis of field information connected to the alleged defect. A safety-related defect has not been recognized at this time and more use of agency assets does not appear to be warranted. Accordingly, this investigation is closed. The closing of this investigation does not constitute a obtaining by NHTSA that a security-associated defect does not exist. The agency will keep track of this problem and reserves the appropriate to consider even more action if warranted by the situations.

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