
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of additive is
recommended. Additives are available from your authorized HYUNDAI dealer along with
information on how to use them. Do not mix other additives.
*2 : The drive belt should be replaced when cracks occur or tension is reduced excessively.


*3 : Fuel filter & Fuel tank air filter are considered to be maintenance free but periodic inspection is recommended for this maintenance schedule depends on fuel quality. If there are some important safety matters like fuel flow restriction, surging, loss of power, hard starting problem, etc. replace the fuel filter immediately regardless of maintenance schedule and consult an authorized HYUNDAI dealer for details.
Scheduled Maintenance Services
Maintenance Under Severe Usage ConditionsHyundai Elantra AD (2016-2020) Owners Manual: Checking the Engine Coolant Level
â– 1.6 T-GDI
â– 2.0 MPI
Check the condition and connections of all cooling system hoses and heater hoses.
Replace any swollen or deteriorated hoses.
The coolant level should be filled between the F and the L marks on the side
of the coolant reservoir when the engine is cool.
If the coo ...
Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description
The Evaporative Emission Control System prevents fuel vapor
stored in fuel tank from vaporizing into the atmosphere. When the fuel
evaporates in the fuel tank, the vapor passes through vent hoses or
tubes to a canister filled with charcoal.
The canister temporarily holds the v ...