The SRS is virtually maintenancefree and there are no parts you can safely service by yourself. If the SRS air bag warning light does not illuminate when the Engine Start/Stop button is in the ON position, or continuously remains on, have your vehicle immediately inspected by an authorized HYUNDAI dealer.
Any work on the SRS system, such as removing, installing, repairing, or any work on the steering wheel, the front passenger’s panel, front seats and roof rails must be performed by an authorized HYUNDAI dealer. Improper handling of the SRS system may result in serious personal injury.
WARNING
To reduce the risk of serious injury or death, take the following precautions:
Hyundai Sonata LF 2014-2019 Service Manual: Stop Signal Electronic Module Specifications
Specifications
CategoryDataOperation temperature range (°C)-40 ~ 85Preserving temperature range (°C)-40 ~ 105Operating voltage (V)5.8 ~ 16Rated current (A)15
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Hyundai Sonata LF 2014-2019 Service Manual: Rail Pressure Sensor (RPS) Repair procedures
Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Measure the output voltage of the RPS at idle and various engine speed.
ConditionOutput Voltage (V)Idle Approx. 1.21,500 rpm2.2 ~ 2.56,300 rpm Approx. 3.0
Removal
1.
Turn the ignition switch OFF and dis ...