Hyundai Elantra AD (2016-2020) Owners Manual: Detecting sensor
The rear radars are located inside the rear bumper for detecting the side and
rear areas. Always keep the rear bumper clean for proper operation of the system.
NOTICE
The system may not work properly when the bumper has been damaged, or
if the rear bumper has been replaced or repaired.
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Hyundai Elantra AD (2016-2020) Service Manual: Tire Repair procedures
Tire Wear
1.
Measure the tread depth of the tires.
Tread depth [limit] : 1.6 mm (0.063 in)
2.
If the remaining tread depth (A) is less than the limit, replace the tire.
When the tread depth of the tires is less than 1.6 mm(0.063 in), the wear indicators (B) will a ...