Hyundai Sonata: Blind Spot Detection system / Blind Spot Detection Unit Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the rear bumper.
(Refer to Body - "Rear Bumper")
3.
Remove the BSD unit (A) after loosening the mounting nuts.

   
Take care not to separate the bracket from rear bumper when removing the BSD sensor.
Installation
1.
Install the BSD units to the rear bumper.
2.
Install the rear bumper.
3.
Connect the negative (-) battery terminal.
   
Take care not to confuse left side (master) and right side (slave) unit when installing.
BSD units connector connect to the wiring connector.
Blind Spot Detection Unit Schematic Diagrams
Circuit Diagram ...

Blind Spot Detection Switch Components and Components Location
Circuit Diagram ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Sub Frame Repair procedures
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Hyundai Sonata LF 2014-2019 Owners Manual: Changing tires
WARNING A vehicle can slip or roll off of a jack causing serious injury or death to you or those nearby. Take the following safety precautions: Never place any portion of your body under a vehicle that is supported by a jack. NEVER attempt to change a tire in the lane of traffic. ALWAYS move t ...

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