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.

If the anti-lock brakes malfunction, the ABS warning light stays off and only the general brake light comes on, so drivers may not know the brakes could lock up during hard braking. This raises the risk of a crash.

Fix: The dealer will update the ABS control unit software at no charge.

The front passenger seat belt buckle can fail to latch, so a passenger may be unable to fasten it. Without a secure belt, the passenger faces a higher risk of injury in a crash.

Fix: The dealer 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.

A manufacturing error means one or both front brake calipers can crack or break. If that happens, braking is weakened, the car takes longer to stop, and the risk of a crash goes up.

Fix: Your Hyundai dealer will replace the affected front 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.