2012 Hyundai Tucson FWD L4-2.4LFACTORY OEM SERVICE PROCEDURE

Repair Procedures





Removal

Smart Key Unit
1. Disconnect the negative (-) battery terminal.
2. Remove the glove box housing.

3. After disconnecting the smart key unit connector (A), loosen the smart key unit mounting bolts, and remove the smart key unit (B).

Factory service manual diagram




RF Receiver
1. Disconnect the negative (-) battery terminal.
2. Remove the glove box housing.

3. Remove the air vent housing in front of the assist seat.

4. After loosening the mounting nut (B), disconnect the connector (A) and remove the receiver (C).

Factory service manual diagram




Interior 1 Antenna
1. Disconnect the negative (-) battery terminal.
2. Remove the seat heater switch assembly.

3. After loosening the antenna nuts (2EA) and connector (B), remove the interior 1 antenna (A).

Factory service manual diagram




NOTE:
Release the connector lock (A) as indicated by the arrow, and then push-down the lock.
Make sure the connector is locked completely when installing.

Factory service manual diagram





Interior 2 Antenna
1. Disconnect the negative (-) battery terminal.
2. Remove the floor console rear panel (A) using the appropriate tool.

Factory service manual diagram




NOTE:
Take care not to damage and scratch the floor console rear panel and its related parts.
Take care not to damage the hook when removing the floor console rear panel.

3. After loosening the antenna nuts (2EA) and connector, remove the interior 2 antenna (A).

Factory service manual diagram




NOTE:
Release the connector lock (A) as indicated by the arrow, and then push-down the lock.
Make sure the connector is locked completely when installing.

Factory service manual diagram





Interior 3 Antenna
1. Disconnect the negative (-) battery terminal.
2. After loosening the mounting bolts, then remove the rear seat assembly.

3. After loosening the antenna nuts (2EA) and connector (A), remove the interior 3 antenna (B).

Factory service manual diagram




NOTE:
Release the connector lock (A) as indicated by the arrow, and then push-down the lock.
Make sure the connector is locked completely when installing.

Factory service manual diagram





Exterior Bumper Antenna
1. Disconnect the negative (-) battery terminal.
2. Lift the vehicle up using the lift.

3. Disconnect the antenna connector (A) on the center of rear bumper.

Factory service manual diagram



4. After loosening the nuts (2EA), remove the exterior bumper antenna (B).

Buzzer
1. Disconnect the negative (-) battery terminal.
2. Remove the front left fender.

3. Disconnect the connectors, then remove the buzzer (A).

Factory service manual diagram




Door Outside Handle
1. Disconnect the negative (-) battery terminal.
2. Disconnect the connector after removing the door trim.

3. After loosening the mounting bolt, then remove the key holder (A).

Factory service manual diagram



4. Remove the outside handle (A) by sliding it rearward.

Factory service manual diagram



5. Disconnect the outside handle connector (B).

Factory service manual diagram




Tailgate Switch
1. Disconnect the negative (-) battery terminal.
2. Remove the tailgate trim.

3. Disconnect the connector. After loosening the tailgate garnish mounting nuts (13EA), remove the tailgate garnish (A).

Factory service manual diagram



4. Remove the outside handle (A) after loosening the outside handle mounting screws.

Factory service manual diagram



5. Remove the other wiring connectors which connected with outside handle, then remove the tailgate switch assembly (A).

Factory service manual diagram





Inspection

Smart Key Unit
- Refer to BE group - inspection / self diagnosis with scan tool.

Smart Key Switch
- Refer to BE group - inspection / self diagnosis with scan tool.

Antenna
- Refer to BE group - inspection / self diagnosis with scan tool.

Tailgate Switch
1. Check for continuity between the tailgate latch terminals.

Factory service manual diagram



2. If continuity is not specified, inspect the switch

Factory service manual diagram





Installation

Smart Key Unit
1. Install the smart key unit.
2. Install the smart key unit mounting bolt and nut, and then connect the connector.
3. Install the glove box.
4. Install the negative (-) battery terminal and check the smart key system.

RF Receiver
1. Install the RF receiver.
2. Install the glove box housing and air vent housing.
3. Install the negative (-) battery terminal and check the smart key system.

Interior 1 Antenna
1. Install the interior 1 antenna.
2. Install the front seat heater switch assembly.
3. Install the negative (-) battery terminal and check the smart key system.

Interior 2 Antenna
1. Install the interior 2 antenna.
2. Install the floor console rear cover after connecting the connector.
3. Install the negative (-) battery terminal and check the smart key system.

Interior 3 Antenna
1. Install the interior 3 antenna.
2. Install the rear seat assembly.
3. Install the negative (-) battery terminal and check the smart key system.

Exterior Bumper Antenna
1. Install the exterior bumper antenna.
2. Install the negative (-) battery terminal and check the smart key system.

Buzzer
1. Install the buzzer.
2. Install the front left fender.
3. Install the negative (-) battery terminal and check the smart key system.

Door Outside Handle
1. Install the outside handle.
2. Install the door trim.
3. Install the negative (-) battery terminal and check the smart key system.

Tailgate Switch
1. Install the tailgate switch.
2. Install the tailgate garnish.
3. Install the tailgate trim.
4. Install the negative (-) battery terminal and check the smart key system.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.