2015 Hyundai Sonata Problems

The Smart Junction Box (SJB) software logic may not properly interpret the signals received from the multifunction switch, which could cause the turn signal to activate in the opposite direction of what the driver intended. A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash.

Fix: Dealers will update the SJB software, free of charge.

In the affected vehicles, the warning light to indicate that the parking brake is applied may intermittently not illuminate in the dash due to corrosion in the switch. If the parking brake indicator is not illuminated when the parking brake is applied, the driver may operate the vehicle with the parking brake partially engaged, increasing the risk of a crash.

Fix: Hyundai will notify owners, and dealers will replace the parking brake switch, free of charge.

Due to a bonding issue with the sunroof wind deflector, the sunroof panel on the affected vehicles may detach while driving. If the sunroof detaches from the vehicle it could become a road hazard, increasing the risk of a crash.

Fix: Hyundai will notify owners, and dealers will repair the wind deflector anchor plate, free of charge.

In these vehicles, the driver's frontal air bag may be missing a chemical enhancer required for the second stage air bag deployment, resulting in the second stage not deploying in certain crashes. The primary stage will deploy as intended. An air bag that does not inflate increases the risk of injury.

Fix: Hyundai will notify owners, and dealers will replace the driver's frontal air bag module, free of charge.

The affected vehicles are equipped with an Antilock Braking System (ABS) warning light intended to warn the driver if there is an ABS malfunction. In the event of an ABS malfunction, the Brake System warning light will illuminate, but the ABS warning light will not illuminate. Since the vehicles have ABS malfunction lights that do not illuminate, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 135, "Light Vehicle Brake Systems." If the driver is alerted there is a brake system malfunction, but not specifically with the ABS system, the driver may operate the vehicle unaware that the vehicle's brakes may lock up during hard braking, increasing the risk of a crash.

Fix: Hyundai will notify owners, and dealers will update the ABS control unit software, free of charge.

The affected vehicles have a front passenger seat belt whose buckle latch assembly may prevent the front passenger from fastening the seat belt. If the front passenger seat belt cannot be latched, an occupant sitting in the front passenger seat has an increased risk of injury in the event of a crash.

Fix: Hyundai will notify owners, and dealers will repair or replace the front passenger seat belt buckle, free of charge.

6 liter model year 2015 Sonata vehicles manufactured August 29, 2014, to October 28, 2014. The affected vehicles may have been assembled with an incorrect left axle shaft which may result in the shaft separating from the transaxle differential. If the left axle shaft separates from the transaxle, the vehicle may stop moving, increasing the risk of a crash. Additionally, a separated axle shaft may allow the vehicle to roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.

Fix: Hyundai will notify owners, dealers will inspect and replace the axle shaft, as necessary, free of charge.

Due to a manufacturing error, one or both of the front brake calipers may fracture. If a brake caliper fractures, brake effectiveness would be reduced, lengthening to distance required to stop the vehicle, increasing the risk of a crash.

Fix: Hyundai dealers will replace the affected brake calipers, free of charge.

A poor connection within the vehicle's wiring harness may result in a reduction of steering assist from the vehicle's motor driven power steering system or the inability to move the vehicle's shifter from the Park position. The reduction of power steering assist can increase the steering effort needed, increasing the risk of a crash.

Fix: Hyundai notified dealers to suspend sales of affected Sonata vehicles and has published recall bulletin 14-01-024 providing a service procedure to repair the affected vehicles.