Hyundai Elantra: 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. B ...

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. ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Do Not Install a Child Restraint in the Front Passenger's Seat
Even though your vehicle is equipped with the OCS, never install a child restraint in the front passenger's seat. An inflating air bag can forcefully strike a child or child restraint resulting in serious or fatal injury. WARNING NEVER place a rear-facing or front-facing child restrai ...

Hyundai Elantra AD (2016-2020) Service Manual: PTC Heater Description and Operation
Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective diesel engine ...