2016 Ducati Xdiavel S

The Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE) based on twenty-two (22) Vehicle Owner Questionnaires (VOQs) for soft rear brakes caused by air seeping into the rear brake lines of model year (MY) 2012-2020 Ducati Monster, Multistrada, SuperSport, Panigale, Scrambler and Diavel motorcycles.The consumers were alleging that the rear brakes would not properly function unless the rear brake pedal was applied several times or that there was a total loss of rear braking during normal applications, increasing the risk of a crash. In a March 2020 meeting, Ducati indicated that they were aware of certain models in which air may enter the motorcycles' rear braking system through the brake lines, due to exposure to heat from the exhaust system. Although this condition compromises rear braking performance, Ducati stated that they did not consider this to be a safety defect because the front and rear brake systems are hydraulically independent from each other, and a motorcycle's front brake system performs most of the stopping. Additionally, they believed that routine brake fluid replacement would resolve consumers' concerns, however complainants and dealership service technicians reported that, in some cases, after a dealer serviced the rear brake system, the rear brake pedal would feel soft and spongy again (indicating compromised brake performance) less than a year later--well before the recommended two-year brake fluid service interval. As a precaution, Ducati issued a series of technical service bulletins (TSBs) to replace the brake lines with redesigned ones, rerouting them away from the exhaust system.ODI's position is that all of the brakes on a motorcycle are considered necessary for safety. Analysis of the data identified that neither the entire model line nor the entire model year range of motorcycles covered by the investigation were affected, but rather certain sub-models or narrower model year ranges of motorcycles incorporated brake lines with a higher exposure to the heat from the exhaust system. Because of the unique routing of each model's brake line, some motorcycles are more susceptible to the condition than others. As these specific models and model years were most likely to exhibit an increased risk of a crash from the lengthened stopping distance, Ducati converted the previously issued TSBs into a safety recall.After receiving a total of 94 VOQs, ODI is closing this PE with Ducati's safety recall 21V-315. With the recall action taken by Ducati, this investigation is closed. However, the closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist on other models or MY vehicles outside of the recall scope. The agency reserves the right to take further action if warranted by the circumstances.

I PURCHASED A PUIG AFTERMARKET WINDSCREEN FOR MY XDIAVEL. IT CAME TO ME WITH BOLTS TO REPLACE THE OEM BOLTS THAT HOLD THE HANDLEBARS ON TO THE BIKE. THE BOLTS THAT PUIG SUPPLIES WITH THEIR WINDSCREEN ARE FAR TOO SHORT TO BE SAFE. I NOTIFIED THE SELLER, THEY REFERRED ME TO PUIG HI-TECH OF USA. PUIG TOLD ME TO GO BACK TO THE RESELLER, WHO REFUSES TO SEND BOLTS, AND I DON'T BLAME THEM. THEY HAVE NOT BEEN TESTED, APPROVED, AND THE RESELLER IS NOT AN ENGINEER TO KNOW WHICH BOLTS ARE SAFE. THESE ARE THE BOLTS THAT FASTEN THE HANDLEBARS TO THE MOTORCYCLE! IF THEY FAIL, THE RIDER LOSES ALL STEERING, THROTTLE, BRAKING, EVEN THE ON/OFF CAPABILITY OF THE MOTORCYCLE. THIS COULD EASILY RESULT IN SEVERE INJURY OR DEATH. FORTUNATELY, I AM AN ENGIINEER, AND SAW RIGHT AWAY THAT THE BOLTS WERE VERY UNSAFE, AND I DID NOT ATTEMPT TO OPERATE THE VEHICLE. I REMOVED THE AFTERMARKET WINDSCREEN AND REINSTALLED THE OEM BOLTS.

NHTSA ID

10919344

Incident

Oct 20, 2016

Mileage

3,200 mi

Procedure for Assessing Front Fork Oil Leaks. Applicability: All Models. This service repair bulletin informs dealers and service managers of the assessment criteria for identifying front fork-related defects. The purpose is prevent technicians from mistaking oozing oil or assembly grease, for legitimate defects. The bulletin further provides examples and pictures for clarification.

Rear Brake System Update Summary. Applicability: All Models. This Service Bulletin replaces and cancels bulletin SRV-SRB-23-053 published on 10/17/2023. This service bulletin informs dealers and service managers of the availability of new rear brake hoses intended to address wear of the brake lever stroke, resulting from routine use, over time.

Guided Diagnosis for Front Brake System Bleeding. Applicability: All Models. This Service Bulletin replaces and cancels the previous bulletin SRV-SRB-20-014 published on 4/17/2020. It provides dealers and service managers with needed information to correctly bleed the front brake system of the various Ducati models. This bulletin further refers the reader to an attached diagnosis guide. The referenced guide/annex is available to NHTSA upon request.

Procedure for Analysis and Control of Oil and Coolant Leaks from Engine_Rev.01. Applicability: All Models. This service repair bulletin instructs dealers and service managers on authorized procedures for identifying and isolating coolant and engine oil leaks. The use of a prescribed leak trace powder is stressed. This bulletin includes service instructions.

Precautions to Follow During Crankcase Cleaning. Applicability: All Models. This service bulletin informs dealers and service managers about precautions in using abrasive cleaners for engine component sealant, and in particular the crankcase covers. The bulletin further provides cleaning instructions with approved cleaning tools.

Procedure for Analysis and Control of Oil and Coolant Leaks from Engine. Applicability: All Models. This service bulletin provides dealers and service managers with troubleshooting guidance for oil or coolant leaks. This bulletin includes service instructions.