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October 6, 2014 Service bulletin

Beginning with MY2009, the filler necks of various TDI clean diesel vehicles were equipped with a...

Audi technical service bulletin 144020338362 for 2009-2015 Audi A6, 2009-2015 Audi Q7 and 2009-2015 Audi A3 and others.

Bulletin number
144020338362
Component
Fuel system, diesel
Summary
Beginning with MY2009, the filler necks of various TDI clean diesel vehicles were equipped with a misfueling guard (Figure 1). The guard minimizes the likelihood that fuel other than ultra-low sulfur diesel will be put into the vehicle. The misfueling guard is designed to remain in a locked position when a nozzle with a diameter typically suited for non-diesel fuels (approximately 13/16?, or 20.6mm) is inserted, to prevent further insertion of the nozzle into the filler neck. A nozzle with a larger diameter typically suited for diesel fuel (approximately 15/16?, or 23.8mm) will unlock the misfueling guard when inserted, allowing the nozzle to be further inserted into the filler neck.

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