2014 Freightliner M2

The Office of Defects Investigation (ODI) is only aware of the one subject fuel container rupture incident on the subject vehicles that first prompted this investigation. The subject CNG fuel system and fuel container design, material, manufacture, assembly and performance appear to be consistent with certain other manufacturers of CNG vehicles and related items of motor vehicle equipment, and in accordance with standards in effect at the time of manufacture. Since the subject incident, new and revised industry standards have advanced CNG fuel system and fuel container integrity and safety. In 2019, NHTSA noted an extremely low failure rate of CNG fuel containers, in a notice of proposed rulemaking (NPRM) to amend the visual inspection labeling requirement in FMVSS 304. NHTSA also entered a strategic partnership project (SPP) with the National Renewable Energy Laboratory (NREL) to assess fuel system and fuel container integrity requirements in an effort to update FMVSS Nos. 303 and 304. In NREL's report, they provided several considerations that reflect minimum safety standards, as well as industry best practices, to harmonize applicable light-, medium-, and heavy-duty natural gas and propane fuel vehicle codes and standards.Given these activities and the low rate of CNG fuel container ruptures in general, and the lack of other incidents among the subject vehicle population, indicating a lack of a safety defect trend, NHTSA is closing this investigation. The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists. The agency reserves the right to take further action if warranted by the circumstances.Please see the Engineering Analysis closing report for more information.

I HAVE TWO 'GRIPES' ABOUT CRUISE CONTROL: 1. THE LACK OF A 'CRASH SWITCH' TO DUMP THE CRUISE CONTROL AGGRAVATED AN ACCIDENT I RECENTLY HAD IN A TRUCK. I REMEMBER YEARS AGO INSTALLING CC IN A CAR, AND THERE WAS A MERCURY SWITCH TO DUMP THE CRUISE CONTROL IF THE CAR WERE IN AN ACCIDENT. OCCASIONALLY, THERE WAS A FALSE DUMP ON A BUMP, BUT IT JUST SERVED TO REMIND ME THE SAFETY FEATURE WAS WORKING! 2. IN AN AUTO WITH AUTOMATIC AND SELECTIVE SPORT SHIFT, THE CRUISE CONTROL DOESN'T DISENGAGE WHEN THE SHIFT LEVER IS MOVED. IN A MANUAL CAR, THE CC WOULD BE DISENGAGED WHEN DEPRESSING THE CLUTCH. I HAVE BEEN SURPRISED WHEN DOWNSHIFTING FOR A HIGHWAY EXIT, TO FIND THE CAR HOLDING SPEED AT THE REDUCED GEAR! AT 88FPS (30 YARDS/SEC) THIS DOESN'T LEAVE MUCH TIME TO RECOGNIZE THE PROBLEM AND DISENGAGE THE CC MANUALLY OR BY A TAP ON THE BRAKES BEFORE ARRIVING AT THE EXIT WITH EXCESS SPEED. I RELY ON CC TO HELP ME AVOID SPEEDING AND TO ACCLIMATE ME TO A CHANGE IN SPEED LIMIT. THE TWO GRIPES ABOVE ARE REAL, AND THEY ARE PERVASIVE IN THE AUTOMOTIVE/TRUCK INDUSTRY! HOW ABOUT A FIX? *TR

NHTSA ID

10712330

Incident

Feb 17, 2015

Tech Talk discussion on M2 brake lights staying on all the time.

Notice concerning Freightliner Service Bulletin 20-086

Service Information Bulletin was released, to add new procedures to address diagnostics near the high pressure pump

This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket, P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.

Warranty Information Letter sent to customers regarding new refrigerator supplier for returning parts.

This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket, P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.