Hyundai Sonata (Hyundai) – Junction Box Software Issue (2021)
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2017 HYUNDAI SONATA
Brand
HYUNDAI
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2017
Hyundai Motor America is recalling certain 2017 HYUNDAI SONATA vehicles due to electrical system:software issues. A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Hyundai Motor America (Hyundai) is recalling certain 2015-2017 Sonata, 2016-2017 Sonata Hybrid, and Sonata Plug-In Hybrid vehicles. 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.
Reported concern (NHTSA)
A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash.
Recommended Action
Per NHTSA guidance
Dealers will update the SJB software, free of charge. Owner notification letters were mailed November 19, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 210.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026