In February, Nissan initiated an investigation into reports of an illuminated Malfunction Indicator Lamp (MIL), reduced power and engine stalling in some 2021 Infiniti Q50 And Q60 vehicles. This investigation has resulted in a recall affecting approximately 13,000 vehicles.
According to the defect report, the engine control module (EMC)in the subject vehicles has a software function that prevents unintended acceleration based on monitoring torque input. A problem was found with the EMC software which prevented it from correctly reducing engine speed after an excessive torque detection. As a result, the vehicle would go into limp mode, reducing engine power, illuminating the MIL and eventually stalling. Nissan has received one report of an accident without injuries potentially related to this issue.
Infiniti will be notifying owners to return to their dealerships to get the ECM software reprogrammed. Infiniti’s number for this recall is R20C5 and the NHTSA campaign number is 21V-234.
Of all the Infiniti Q50 vehicles, the 2014 hybrid model has the highest number of manufacturer recalls and owner complaints. The systems with the highest defects include steering, electrical, air bags and braking.
Steering problems is the number one driver complaint of the 2014 Q50 hybrid. The vehicles Direct Adaptive Steering (DAS) is an advanced “steer by wire” system developed to enhance feel and feedback, but drivers say it is unpredictable and unreliable. Temporary loss of steering because the system goes out of calibration and resets, the vehicle unexpectedly pulls left or right and the vehicle fails to steer in the intended direction, are also common complaints.
Repeated failure of the electrical equipment on the 2014 Q50 hybrid have owners frustrated. The top complaint is unexpected software shutdowns which leave drivers without an instrument panel, climate control and audio control. The vehicle must be shut off and restarted before it can be restored. Failure of the vehicle sensors is common as well. These sensors are used throughout the vehicle to help the driver maintain safety while driving. If they are not working properly it can cause unexpected problems with the Occupant Classification System (OCS), driver assist and the backup camera system.
Airbag problems are a common complaint on many many vehicle makes and models, and the Infiniti Q50 hybrid is not immune. Errors affecting the OCS have drivers concerned about their passenger safety, even after having the Air Bag Control Unit and the OCS Electronic Control Unit (ECU) reprogrammed under NHTSA recall 16V-244
According to some 2014 Q50 owners, the electronic braking system in their vehicles have made their cars difficult to handle. Brake booster pump failures cause reduced braking power and longer stopping distances, and the emergency collision warnings and impact mitigation activates while driving, making it difficult to avoid collisions or make quick maneuvers around obstacles.
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Nissan will be asking the owners of certain 2015-2019 Infiniti and Nissan vehicles, equipped with ADVICS ABS actuators, to return to their dealerships for a problem affecting the braking system. These vehicles were previously recalled under NHTSA campaign number 18V-601, but were not repaired. This new recall (19V-807) also expands the previous population. The affected models include:
- 2017-2019 Infiniti QX60
- 2016-2018 Nissan Maxima
- 2015-2018 Nissan Murano
- 2017-2019 Nissan Pathfinder
Due to manufacturing variation, the ABS actuators may contain an oil seal with inadequate sealing performance. The seal could prematurely wear and leak brake fluid. If this occurs, the ABS warning lamp will illuminate to warn the driver, but if the warning is ignored, the brake fluid leak could create an electrical short in the actuator circuit. In rare instances, this could lead to a fire.
Note: When brake fluid leaks onto the circuit board, the ABS warning lamp will remain illuminated for more than 10 seconds after engine is started. If this occurs, owners should park their vehicle outdoors away from other vehicles or structures and to not drive the vehicle.
Nissan will be contacting the owners of certain 2012-2013 Infiniti M35 hybrid vehicles about a software update affecting the propulsion system. These vehicles are equipped with a power train that warns the driver in the event of a cooling system malfunction. If the warning lamp is ignored and the vehicle continues to be operated, the power train control module logic will shut off the engine to prevent damage. If the engine unexpectedly stops while driving, the brake and steering systems remain operational, however, there is an increased risk of an accident. Continue reading
Nissan North America will be contacting the owners of certain 2014-2016 Infiniti Q50 and 2014-2016 Infiniti Q50 Hybrid‘s about a problem that could diminish the responsiveness of the steering. The vehicles affected are equipped with an optional DAS (steer-by-wire) system. Continue reading
Certain 2013-2017 Chevrolet, Infiniti and Nissan owners will be contacted by the manufacturer about a problem affecting the airbag deployment system. The front seat passenger Occupant Classification System (OCS) may incorrectly classify an adult passenger as a child or classify the seat as empty despite it being occupied. As a result, the passenger frontal air bag may not deploy or could deploy incorrectly during a crash. Continue reading
According to reports filed with the NHTSA, certain Nissan and Infiniti vehicles could experience reduced braking performance and/or steering control due to a manufacturing error. During the assembly process of the front wheel hub, the hub bolts, torque member bolts, and/or stopper bolts may have been under torqued or missing. Over time the brake caliper could separate from the wheel assembly causing reduced braking and steering control. Warning signs that there is a problem include unfamiliar noises and/or vibrations. Continue reading
Due to an assembly process issue, the fuel pressure sensor in some Nissan and Infiniti vehicles may have not been tightened to the manufacturer specification. Over time, the sensor could gradually loosen due to heat and vibration, allowing a small amount of fuel to leak. The fuel leak, in the presence of an ignition source could result in an engine fire. The vehicles affected by this problem include: Continue reading