Hyundai Elantra AD (2016-2020) Owners Manual: Climate Control Air Filter
Filter Inspection
The climate control air filter should be replaced according to the Maintenance
Schedule. If the vehicle is operated in severely air-polluted cities or on dusty
rough roads for a long period, it should be inspected more frequently and replaced
earlier. When you replace the cl ...
Hyundai Elantra AD (2016-2020) Service Manual: Variable Intake Solenoid (VIS) Valve Description and Operation
Description
Variable Intake manifold Solenoid (VIS) valve is installed on
the intake manifold. The VIS valve controls the vacuum modulator which
activates a valve in the intake manifold. The ECM opens or closes this
valve according to engine condition (Refer to below table).
Engine cond ...