2014 Cadillac Elr

Component Affected: ELECTRICAL SYSTEM/ AIR BAGS: FRONT: PASSENGER SIDE Description of Safety Defect: The Passenger Presence System (PPS) Module / Occupant Sensor Module failed on my 2014 Cadillac ELR, triggering diagnostic code U0170 ("Lost Communication with Passenger Presence Module") And illuminating the "Service Airbag" warning light on the dashboard. Due to this electronic failure, the vehicles supplemental restraint system (STS) has completely disabled the front passenger-side airbag. In the event of a collision, the passenger airbag will not deploy, creating an immediate and severe safety hazard for any occupant in that seat. This error message appeared while in the dealerships possession for an unrelated issue. The dealership service technician confirmed the faulty module and stated they are not able to complete the repair due to discontinued parts. see attached. General motors (GM) has officially discontinued the vehicle-specific replacement parts (Part #23504892 & #23504893) required to fix this defect. Dealerships are turning owners away because the parts are entirely unavailable nationwide, and standard components from higher-volume GM models are incompatible with the low-production ELR seat configuration. This leaves owners with a permanently disabled safety system and no manufacturer-supported path to repair a critical restraint component. Because this is a widespread, identical failure among 2014 ELR vehicles that results in total airbag deactivation, a federal safety investigation and recall are required to force the manufacturer to produce a batch of functional safety components.

The vehicle lost all power while driving; this has occurred four times between August 2024 and November 2024. Without warning, the vehicle loses power, including brakes, steering, lights, warning flashers, doors, etc., all power goes away. This has occurred three times during the day and once at night, creating a hazard for myself and other drivers. The vehicle has been towed to the dealership three times, where it restarts. There are no codes to be found and GM is uncertain of what to do.

Loss of power and control: Twice over the past two months, the vehicle has died and lost all power and control functions while in motion. The first episode was while my spouse was driving during the day at about 30 MPH. She reports the vehicle made a loud "pop," and then all power to the vehicle, including steering and braking, was lost. After a few minutes, the car restarted and was towed to the dealership. They found no codes and could not replicate the incident, and GM could not provide them with any suggestions. After a month, the car was returned to us. Two weeks ago, I was driving at night, and except for the "popping" noise, the same thing happened while driving on a dark roadway. The vehicle just died, and I managed to wrestle it to the side of the road with no power steering, no brakes, no hazard lights, nor could I get the doors to open with the electric door release. Again, after being towed, the dealership reported that the car started the next morning, and they found no codes and could not replicate the issue. While the dealership still has the vehicle, we are concerned that driving at highway speeds could be much more dangerous or deadly. In addition, the vehicle dying on a dark road and having no electrical power poses a risk to other drivers if the vehicle cannot be moved off the roadway.

SHIFTING THE VEHICLE INTO PARK AND ATTEMPTING TO TURN IT OFF BY HITTING THE POWER BUTTON, YIELDS A WARNING ON THE DIC SAYING "ACTION REQUIRED: SHIFT TO PARK", DESPITE THE SHIFT SELECTOR ALREADY BEING IN PARK. THIS PREVENTS THE VEHICLE FROM BEING TURNED OFF. REQUIRES MULTIPLE ATTEMPTS OF TURNING THE VEHICLE ON AND OFF, AND MOVING OF THE SHIFT SELECTOR TO GET THE CAR TO RECOGNIZE THE VEHICLE IS ACTUALLY IN PARK.

WHEN USING THE BRAKES; SMALL BUMPS CAN TRIGGER THE ABS SYSTEM TO INTERVENE UNNECESSARILY, CAUSING THE CAR TO LOSE SIGNIFICANT GROUND WHEN BRAKING, THIS CAN BE CATASTROPHIC EVEN AT LOW SPEEDS. THIS IS AN ISSUE I HAVE EXPERIENCED FIRST HAND IN BOTH THE CADILLAC ELR, AND THE SISTER CAR THE CHEVY VOLT. THIS HAPPENS AT ALL SPEEDS, MOSTLY ON ROADS WITH POTHOLES WHERE THE WHEEL WILL MOMENTARILY LOSE CONTACT WITH THE ROAD. THIS CAN BE RESOLVED IN THE WAY AUDI/VW HAS, THAT INCREASES THE BRAKE PRESSURE ONCE THE ABS SYSTEM IS TRIGGERED TO MAKE UP FOR LOST DISTANCE, THUS REDUCING THE CHANCES OF AN ACCIDENT.