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.
Please remember 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.
Hyundai Sonata LF 2014-2019 Service Manual: Battery Repair procedures
Removal
1.
Remove the air duct.
(Refer to Engine Mechanical System - "Air Cleaner")
2.
Disconnect the battery (-)terminal (A) and then (+)terminal (B).
3.
Remove the TCM.
(Refer to Automatic Transaxle System - "Transaxle Control Module (TCM)")
4.
Remove the battery mounting bracket ...
Hyundai Sonata LF 2014-2019 Service Manual: Heated Oxygen Sensor (HO2S) Specifications
Specification
HO2S [Bank 1/Sensor 1] (Linear type)
ItemSpecificationHeater Resistance (?)2.4 ~ 4.0 [20°C(68°F)]
ItemSpecificationHeater Resistance (?)Approx. 9.0 [20°C(68°F)]
HO2S [Bank 1/Sensor 2] (Binary type)
A/F Ratio (?)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4
ItemSpeci ...