SpecificationsHyundai Elantra AD (2016-2020) Owners Manual: Head Restraints
The vehicle's front and rear seats have adjustable head restraints. The head
restraints provide comfort for passengers, but more importantly they are designed
to help protect passengers from whiplash and other neck and spinal injuries during
an accident, especially in a rear impact collisi ...
Hyundai Elantra AD (2016-2020) Service Manual: CVVT & Camshaft Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or
retards the valve timing of the intake and exhaust valve in accordance
with the ECM control signal which is calculated by the engine speed and
load.
By controlling CVVT, the valve over-lap or under-lap occurs,
which m ...