2012 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE

Keyless Starting System: Testing and Inspection





Inspection

Self Diagnosis With GDS
Smart key system defects can be quickly diagnosed with the GDS. GDS operates actuator quickly to monitor, input/output value and self diagnosis.
The following three features will be major problem in SMART KEY system.
1. Problem in SMART KEY unit input.
2. Problem in SMART KEY unit.
3. Problem in SMART KEY unit output.
The following three diagnostic solutions will be the main solution process to a majority of concerns.
1. SMART KEY unit Input problem : switch diagnosis
2. SMART KEY unit problem : communication diagnosis
3. SMART KEY unit Output problem : antenna and switch output diagnosis

Switch Diagnosis
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel, turn the power on GDS.
2. Select the vehicle model and then SMART KEY system.

Factory service manual diagram



3. Select the "SMART KEY unit".
4. After IG ON, select the "Current data".

Factory service manual diagram



5. You can see the situation of each switch on scanner after connecting the "current data" process.

Factory service manual diagram





Communication Diagnosis With GDS (Self Diagnosis)
1. Communication diagnosis checks that the each linked components operates normal.
2. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
3. After IG ON, select the "DTC".

Factory service manual diagram




Antenna Actuation Diagnosis
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. After IG ON, select the "ACTUATION TEST".

Factory service manual diagram



3. Set the smart key near the related antenna and operate it with a GDS.

Factory service manual diagram



4. If the LED of smart key is blinking, the smart key is normal.
5. If the LED of smart key is not blinking, check the voltage of smart key battery.
6. Antenna actuation
A. INTERIOR Antenna 1
B. INTERIOR Antenna 2
C. Trunk antenna
D. BUMPER/Antenna
E. DRV_DR Antenna
F. AST_DR Antenna

Antenna Status Check
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. Select the "Antenna Status Check".

Factory service manual diagram



3. After IG ON, select the "Antenna Status Check".

Factory service manual diagram



4. Set the smart key near the related antenna and operate it with a GDS.

Factory service manual diagram




Factory service manual diagram



5. If the smart key runs normal , the related antenna, smart key(transmission, reception) and exterior receiver are normal.
6. Antenna status
A. INTERIOR Antenna 1
B. INTERIOR Antenna 2
C. Trunk antenna
D. BUMPER/Antenna
E. DRV_DR Antenna
F. AST_DR Antenna

Serial Communication Status Check
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. Select the "Serial Communication Line Check".

Factory service manual diagram



3. After IGN ON, select the "Receiver Communication Line Check".

Factory service manual diagram



4. Check the serial communication line with a GDS.
5. If the smart key runs normal, the communication of smart key unit, exterior receiver are normal.
6. If the smart key runs abnormal, check the following items.
A. Disconnection or no response of the exterior receiver communication line.
B. The exterior receiver communication line disconnection and ground connection.

Interior Antenna Actuation Check
1. Set the smart key in the following shade area and check the IG ON.

Factory service manual diagram



2. If the ignition is ON, the antenna runs normal.
3. Check the interior antenna ignition mode.
4. Set the smart key in the following shade area and actuate the antenna. Check the LED of smart key is blinking.

Factory service manual diagram



5. If the LED of smart key is not blinking, check the antenna in shade area.

Factory service manual diagram




FOB Status Check
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. After IGN ON, select the "FOB KEY STATUS INFO".

Factory service manual diagram




Factory service manual diagram




Smart Key Status Check
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. After IGN ON, select the "SMK STATUS INFO".

Factory service manual diagram




Factory service manual diagram




Neutralization Status Check
1. Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
2. After IGN ON, select the "Neutralization mode".

Factory service manual diagram




Factory service manual diagram




Factory service manual diagram




Factory service manual diagram




Factory service manual diagram




Factory service manual diagram




Factory service manual diagram



Input Switch List

Factory service manual diagram




Actuator List

Factory service manual diagram




Factory Service Tools

Use the Manual With the Right Hardware

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

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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.

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