Hyundai Sonata: Driving your vehicle / Braking System

Good Driving Practices

Never move the shift lever from P (Park) or N (Neutral) to any other position with the accelerator pedal depressed. Never move the shift lever into P (Park) when the vehicle is in motion. Be sur ...

Power Brakes

Your vehicle has power-assisted brakes that adjust automatically through normal usage. If the engine is not running or is turned off while driving, the power assist for the brakes will not work. You ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Input shaft speed sensor 1 Specifications
Specification ItemSpecificationTypeHall effect sensorOperation condition (°C)°F(-40 ~ 150)-40 ~ 302Output signal (mA)High: 11.8 ~ 16.8Low: 5.9 ~ 8.4 ...

Hyundai Sonata LF 2014-2019 Service Manual: Engine Control Module (ECM) Repair procedures
Removal     When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below. [In the case of installing used ECM] 1. Perform "Neutral mode" procedure with GDS. (Refer to "Immobilizer" in BE group) 2. Insert the key and turn it to th ...