Bright-metal maintenance
Underbody maintenance
Corrosive materials used for ice and snow removal and dust control may collect on the underbody. If these materials are not removed, accelerated rusting can occur on underbody parts such as the fuel lines, frame, floor pan and exhaust system, even though they have been treated with rust protection.
Thoroughly flush the vehicle underbody and wheel openings with lukewarm or cold water once a month, after off-road driving and at the end of each winter. Pay special attention to these areas because it is difficult to see all the mud and dirt. It will do more harm than good to wet down the road grime without removing it. The lower edges of doors, rocker panels, and frame members have drain holes that should not be allowed to clog with dirt; trapped water in these areas can cause rusting.
WARNING
After washing the vehicle, test the brakes while driving slowly to see if they have been affected by water. If braking performance is impaired, dry the brakes by applying them lightly while maintaining a slow forward speed.
Repairing your vehicle's finish
Aluminum wheel maintenanceHyundai Elantra AD (2016-2020) Owners Manual: Tire Rotation
To equalize tread wear, HYUNDAI recommends that the tires be rotated every 7,500
miles (12,000 km) or sooner if irregular wear develops.
During rotation, check the tires for correct balance.
When rotating tires, check for uneven wear and damage. Abnormal wear is usually
caused by incorrect tir ...
Hyundai Elantra AD (2016-2020) Service Manual: AVN Antenna Repair procedures
Removal
Roof Antenna
1.
Disconnect the negative (-) battery terminal.
2.
Remove the roof trim.
(Refer to Body - "Roof Trim Assembly")
3.
Disconnect the roof antenna connector (A).
4.
Remove the roof antenna (A) after loosening a nut (B).
Installation
Roof Anenna
1.
Connect th ...