Hyundai Elantra: Integrated Body Control Unit (IBU) / Repair procedures
1. | Disconnect the negative (-) battery terminal. |
2. | Remove the glove box housing cover. (Refer to Body - "Glove Box Housing Cover") |
3. | Remove the IBU unit (A) after loosening mounting nuts. 
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4. | Remove the IBU after disconnecting IBU connectors. 
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1. | Connect the integrated body control module connector. |
2. | Install the integrated body control module. |
3. | Install the glove box housing cover. |
4. | Connect the negative (-) battery terminal. |
Diagnosis With Diagnostic tool |
1. | In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool). (1) | Fault Code Searching : Checking failure and code number (DTC) |
(2) | Data Analysis : Checking the system input/output data state |
(3) | Actuation test : Checking the system operation condition |
(4) | S/W Management : Controlling other features including system option setting and zero point adjustment |
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2. | If diagnose the vehicle by Diagnostic tool, select "DTC Analysis" and "Vehicle". 
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3. | If check current status, select the "Data Analysis" and "Car model". 
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4. | Select the 'IBU_BCM' to search the current state of the input/output data. 

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Other information:
HYUNDAI Air Conditioning Systems are
filled with R-1234yf refrigerant.
1. Start the vehicle.
2. Push the air conditioning button
3. Select the Face Level mode.
4. Set the air intake control to
Recirculation mode temporarily to
allow the cabin to cool quickly. When
the desired temperature in the cabin
is reached, change the air intake
control back to Fresh mode.
5. Adjust the fan speed contr..
Repair procedures
Replacement
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When removing with a flat - tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. •
Put on gloves to prevent hand injuries.1.Using a screwdriver or remover, remove the roof side molding (A).
•
Always replace the ..