Checking the Parking Brake

Check the stroke of the parking brake by counting the number of "clicks" heard while fully applying it from the released position. Also, the parking brake alone should securely hold the vehicle on a fairly steep grade. If the stroke is more or less than specified, have the parking brake adjusted by an authorized HYUNDAI dealer.
Stroke : 6 clicks at a force of 44 lbs (20 kg, 196 N)
Washer Fluid
Air CleanerHyundai Elantra AD (2016-2020) Service Manual: Output Speed Sensor Description and Operation
Description
The output speed sensor is a vital unit that measures the
rate of rotation of the transaxle's turbine shaft and output shaft, and
delivers the readings to the TCM. The sensor provides critical input
data that's used in feedback control, damper clutch control, gear
setting co ...
Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications
Fuel Delivery System
ItemsSpecificationFuel TankCapacity50 lit. (13.2 U.S.gal., 52.8 U.S.qt., 44.0 Imp.qt.)Fuel FilterTypePaper typeFuel Pressure RegulatorRegulated Fuel Pressure355 ~ 365 kPa (3.4 ~ 3.7 kgf/cm?, 48.6 ~ 52.9 psi)Fuel PumpTypeElectrical, in-tank typeDriven byEle ...