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.
Disc brakes wear indicator
Parking brakeHyundai Creta GS 2014-2019 Service Manual: Special service tools
Special Service Tools
Tool(Number and Name)
Illustration
Use
09581- 2T100
Piston expander
Spreading the front disc brake piston.
...
Hyundai Creta GS 2014-2019 Service Manual: Knock Sensor (KS)
Description and operation
Description
Knocking is a phenomenon characterized by undesirable vibration and noise and
can cause engine damage. Knock Sensor (KS) is installed on the cylinder block
and senses engine knocking.
When knocking occurs, the vibration from the cylind ...