Hyundai Sonata LF 2014-2019 Service Manual: Front Impact Sensor (FIS) Repair procedures
Removal
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Removal of the airbag must be performed according to the precautions/ procedures described previously.
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Before disconnecting the front impact sensor connector, disconnect the front airbag connector(s).
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Do not turn the ignition switch ON and ...
Hyundai Sonata LF 2014-2019 Owners Manual: 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.
Please remember some driving conditions or climates may cause a brake squeal ...