Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
Failure Diagnosis
1.
In principle, ESP and TCS controls are prohibited in case of ABS failure.
2.
When ESP or TCS fails, only the failed system control is prohibited.
3.
However, when the solenoid valve relay should be turned off in case of ESP failure, refer to the ABS fail-safe.
4.
...
Hyundai Sonata LF 2014-2019 Service Manual: Spark Plug Specifications
Specification
ItemSpecificationTypeSILZKR7E8GGap0.7 ~0.8 mm (0.0275 ~ 0.0314 in.)
...