2018 Hyundai Sonata Technical Service Bulletins

208 technical service bulletins (TSBs) are on record for the 2018 Hyundai Sonata. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10127004Dec 11, 2017Transmission and drivetrain, Electrical system. This bulletin provides information related to the Engine Control Module (ECM) and Transmission Control Module (TCM) software updates for certain 2018MY SONATA, equipped with 2.0L turbo engine and 8 speed automatic transmission. These vehicles may experience Malfunction Indication Light illumination with any of the following DTC(s) below: ? P219C: Cylinder #1 Imbalance Error ? P219D: Cylinder #2 Imbalance Error ?…
• 10126999Dec 11, 2017Equipment. Hyundai Motor America is conducting a Service Campaign to install a bolt on the A/C bracket on certain 2018 Year Sonata vehicles. Service Campaign T2O provides a service procedure to install the a/c bracket bolt.
• 10126994Dec 11, 2017Equipment. Some Sonata 2.4L (LFa) vehicles may have an A/C bracket bolt missing. Prolonged use under this condition may result in bracket damage.
• 10123302Oct 25, 2017Equipment. This bulletin provides information regarding the A/C evaporator drain hose length specification change on certain Sonata (LFa) vehicles.
• 10123305Oct 4, 2017Transmission and drivetrain. Before installing an automatic transmission, check the depth of the torque converter in the case to confirm the torque converter is fully installed in the transmission. If this is not done, the oil pump may be damaged.
• 10118671Sep 18, 2017Transmission and drivetrain. Some Sonata Hybrid (LF HEV) vehicles may experience a small oil leak from the electric oil pump (EOP) seals. If so, follow the Service Procedure in this bulletin to inspect and repair the oil seals between the transmission and EOP. No drivability issues are associated with this condition.
• 10118670Sep 12, 2017Transmission and drivetrain. The 2018 Sonata (LFA) 2.0T is equipped with an 8-speed transmission. Do not replace the transmission for any of the solenoid DTC listed below. Instead, follow the Service Procedure on Page 2 and replace the related part.
• 10117373Aug 3, 2017Equipment. If you are servicing a vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. ? Diagnostic trouble codes: ? P0705 - Range switch sensor circuit ? P0706 - Range switch range/performance ? P0707 - Range switch - open circuit ? P0708 - Range switch - short circuit or multiple inputs ? Symptoms: ? Malfunction Indicator Light (MIL) illuminated ? 4th gear fail-safe ? No…

← All problems reported for the 2018 Hyundai Sonata