Hyundai Sonata: Hands Free Switch. Repair procedures - Hands Free System - Body Electrical SystemHyundai Sonata: Hands Free Switch. Repair procedures

Inspection

1.
Check the hands free remote control switch for resistance between No.3 and No.4 terminals in each switch position.

Switch
Connector terminal
Resistance (±5%)
Output voltage (±0.22V)
Send
3 - 4 (RH)
40.91 kΩ
4.48 V
End of call
3 - 4 (RH)
18.91 kΩ
4.0 V
Voice
3 - 4 (RH)
10.71 kΩ
3.5 V

2.
In case of LH, check the hands free remote control switch for resistance between No.3 and No.4 terminals in each switch position.

Switch
Connector terminal
Resistance (±5%)
Output voltage (±0.22V)
Send
3 - 4 (LH)
40.91 kΩ
4.48 V
End of call
3 - 4 (LH)
18.91 kΩ
4.0 V
Voice
3 - 4 (LH)
10.71 kΩ
3.5 V


Removal

1.
Disconnect the negative (-) battery terminal.
2.
Remove the driver airbag module.
(Refer to the RT group)
3.
Remove the steering wheel.
(Refer to the ST group - "Steering column & shaft")
4.
Remove the steering wheel cover (A) after loosening the screws.

5.
Remove the steering wheel remote control switch connector (A) after loosening the mounting screws.


Installation

1.
Reassemble the steering wheel remote control switch after connecting the connector.
2.
Reassemble the steering wheel.
3.
Reassemble the driver airbag module.
Make sure the hands free remote control switch and the airbag module connectors are plugged in properly.

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