Disc Brakes Wear Indicator
When your brake pads are worn and new pads are required, you will hear a high pitched warning sound from your front or rear brakes. You may hear this sound come and go or it may occur whenever you depress the brake pedal.
Note that some driving conditions or climates may cause a brake squeal when you first apply (or lightly apply) the brakes. This is normal and does not indicate a problem with your brakes.
NOTICE
To avoid costly brake repairs, do not continue to drive with worn brake pads.
Information
Always replace brake pads as complete front or rear axle sets.
Rear Drum Brakes
Your rear drum brakes do not have wear indicators. Therefore, have the rear brake linings inspected if you hear a rear brake rubbing noise. Also have your rear brakes inspected each time you change or rotate your tires and when you have the front brakes replaced.
Hyundai Elantra AD (2016-2020) Service Manual: 26 Brake Control Solenoid Valve(26/B_VFS) Description and Operation
Description
•
26 brake control solenoid valve(26/B_VFS) is attached to the valve body.
•
This variable force solenoid valve directly controls the hydraulic pressure inside the 26Brake.
...
Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications
Audio
ItemsAudioModelTFT/MONO/DISPLAY Power supplyDC 14.4VParasitic currentMax. 1mA (Head unit only)Antenna80PF 75?Tuning typePLL SYNTHESIZED TUNING
...