Hyundai Santa Fe: Windshield Wiper/Washer / Rain Sensor. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Body Electrical System / Windshield Wiper/Washer / Rain Sensor. Repair procedures

Removal
  
Do not damage or touch the silicone (coupling medium).
Be careful so that the silicon is not contaminated by foreign substances, dust, etc. .
Use caution, as the silicon may be damaged if you try to separate the rain sensor forcibly.
  
The dust or foreign substance on the rain sensor may have bad influence on the performanec of the rain sensor. In order to ensure accurate function of the rain sensor, protect the sensor surface with the protection cover until the sensor is installed on the bracket.
The coupling pad on the rain sensor surface is adhesive and the coupling pad may stick to the windshield during the use depending on the environment condition.
Therefore, it may be damaged when you try to remove the rain sensor from the windshield forcibly. Use caution when sepearting it from the windshield.
1.
Remove the rain sensor cover (A)&(B).

2.
To remove the latch, pull aside the latch using the cover hole with a small flat-blade screwdriver (A).

3.
Remove the rain sensor.
1)
Insert a small flat-blade screwdriver (-) into a space at the bottom(B) or top(A), between the rain sensor and bracket. .
2)
Pull the rain sensor slowly up and down in the vertical direction of the glass, then disassemble the rain sensor slowly from windshield without damaging the silicone on the sensor.

  
It may be damaged when you try to remove the rain sensor from the windshield forcibly. Use caution when sepearting it from the windshield.
When detaching the silicone under a high temperature, it may be easily damaged because of the adhesive strength of the silicone. Remove the silicone in a cool enviroment.
4.
Disconnect the wiring harness connector (B) from the rain sensor by inserting a small flat-blade screwdriver (A) into the space.

Installation
  
Check the operation of the rain sensor and the light sensor before mounting.
Check the sensor for silicon damage.
Check whether the rain sensor connector is tightened.
Check whether the rain sensor and bracket are properly tightened.
Check whether the sensor mounted area is free from foreign matters.
Recalibrate sensitivity of the swtich if the auto-wiping operation is insensitivity or too much sensitive.

In case the silicone of the rain sensor is normal or slightly damaged as shown in the below images, it can be reused.
Normal
Damage within 1.5 mm of outer part


In case the silicone of the rain sensor is damaged as shown in the below images, it should be replaced with a new silicone.
Foreign substances
Fingerprint
Damege


Damege


In case the silicone of the rain sensor is damaged it should be replaced it as shown below.
1) Remove the damaged silicone gel pad from the lens plate completely.

  
Be careful not to damage or contaminate the surface of the lens plate during removal.
2) Attach the new silicone gel pad aftet removing the silicone paper (A) then remove the transperent film (B).

  
When attaching the silicone gel pad to the sensor, be careful not to contaminate
It is very important that the silicon (coupling pad) is completely pushed against the windshield and stuck without any air bubble.

In case of replacing the damaged windshield, you may reuse the undamaged exisitng rain sensor.
The windshield glass has to be clean and free of contamination or foreign substances.
1.
Connect the rain sensor connector.
2.
Push one of the latch of spring arm (A) down until it snaps and you hear a click sound.
And then push the latch of second spring arm (B) for keeping the sensor in right position.

  
Do not snap both spring arms at the same time.
An incorrectly mounted snap connection may cause malfunctions of the rain/light sensor.

    Rain Sensor. Schematic diagrams

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    Rear Wiper/Washer

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