2013-2015 Kia Optima EPB Module Failure: Warning Lights, Diagnosis, and Replacement
Diagnose the common "EPB" warning light, understand critical compatibility checks before buying a replacement, and learn why it's different from the HECU fire recall.
- This module is ONLY for 2013-2015 Optima models with the optional Electric Parking Brake (EPB) switch; it will not fit models with a foot pedal.
- This part does NOT require dealer programming. A used module with the exact part number 59700-2T700 is a viable, plug-and-play replacement.
- Do not confuse this EPB module (in the center console) with the HECU/ABS module (in the engine bay) which is subject to a serious fire-risk recall.
- Failure is most often indicated by a yellow 'EPB' warning light and the parking brake being unresponsive or stuck.
Symptoms of a Failing Parking Brake Control Module
When the EPB control module begins to fail, it will usually provide clear warnings. The most common sign is on your instrument cluster.
- EPB Warning Light: The most frequent symptom is a solid or flashing yellow "EPB" warning light on your dashboard. The owner's manual suggests a simple reset procedure for a flashing light: press the EPB switch down, then pull it up again. If the light remains on, further diagnosis is needed.
- Parking Brake Won't Engage or Release: You may find the parking brake does not respond when you operate the switch. It can get stuck in the engaged position, preventing you from driving, or fail to engage at all, creating a roll-away risk.
- "Auto Hold" Light Flashing: A problem with the EPB system can also cause the "Auto Hold" indicator light to flash.
- Audible Chimes and Messages: Your vehicle may display a warning message on the instrument cluster screen accompanied by a chime.
It's important to note that these symptoms can also be caused by a faulty EPB switch in the console, damaged wiring, or a problem with the electric motor actuators on the rear brake calipers themselves. A diagnostic scan is the best way to confirm if the module is the source of the fault.
Important: A separate, serious safety recall exists for the Hydraulic Electronic Control Unit (HECU), which is the ABS module. This is NOT the same as the EPB module. The HECU is in the engine bay and can leak brake fluid, creating a fire risk. The EPB module is in the center console and is not part of this recall. Ensure you correctly identify which system is causing your warning lights.
Buying a Used 2013-2015 Optima Parking Brake Module
A used OEM module is an excellent, cost-effective solution for a failed unit. Because these modules do not typically require expensive dealer programming, swapping in a used part is a straightforward repair. Here’s what to look for:
- Match the Part Number Exactly: You must match the OEM part number 59700-2T700. While other numbers may look similar, only this exact number guarantees compatibility for the 2013-2015 Optima with the electric parking brake option.
- Check Vehicle Options: Before ordering, confirm your vehicle has the factory electric parking brake system. This module will not work on models with a traditional foot-pedal parking brake.
- Physical Inspection: The module is located in the center console area, making it vulnerable to liquid spills. Carefully inspect the connector pins on the used module for any signs of corrosion, rust, or a chalky green or white residue, which indicates liquid damage. Do not buy a module that shows any signs of water intrusion.
- Source Vehicle: If possible, choose a part from a vehicle with lower mileage and no reported flood damage. A reliable used OEM module from a reputable seller is often a better choice than a new, unproven aftermarket part.
Programming and Installation
Does this module need to be programmed?
No, the 59700-2T700 module does not typically require dealer-level programming or VIN flashing. It is generally considered a plug-and-play part. However, some sources suggest it may need to perform a simple self-calibration sequence after installation.
Pro Tip: After installing the replacement module and reconnecting the battery, perform this auto-configuration sequence: Turn the ignition ON (engine off) and wait for 30 seconds. Then, turn the ignition OFF for at least 3 seconds. Turn the ignition back ON. This allows the new module to initialize with the vehicle's systems.
Replacement Overview
The EPB control module is located inside the center console. Replacement requires removing several trim pieces to gain access.
- Disconnect the negative battery terminal.
- Carefully pry off and remove the side trim panels and upper trim of the center console.
- Once exposed, you will see the module. Disconnect the electrical connector(s).
- Remove the nuts or bolts securing the module to its bracket and remove it from the vehicle.
- Installation is the reverse of removal. Ensure all connectors are securely fastened before reinstalling the trim.
Cost of Replacement
The cost can vary significantly depending on whether you choose a new or used part and perform the labor yourself.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $465 - $655 |
| Used OEM | $100 - $170 |
| New Aftermarket | Not commonly available |
| Shop Labor | $180 - $360 |
Frequently Asked Questions (FAQ)
Does the 2013-2015 Optima EPB module need to be programmed by a dealer?
No, dealer programming is not required for this specific part. It is designed to be plug-and-play, though it may require a simple initialization sequence after installation to configure itself to the vehicle.
Where is the parking brake module located on a 2014 Kia Optima?
The parking brake control module is located inside the center console, underneath the trim panels near the gear shifter.
What's the difference between the EPB module and the part in the HECU fire recall?
They are two completely different parts. The EPB Control Module (59700-2T700) is in the center console and controls the electric parking brake. The Hydraulic Electronic Control Unit (HECU) is the ABS pump and module, located in the engine bay, and is the subject of a major fire-risk recall (NHTSA ID 21V-331). A fault in the HECU will typically illuminate the ABS and/or ESC warning lights.
Can I drive my Optima if the EPB light is on?
Yes, but with caution. If the light is on, the parking brake may be inoperative, which is a safety hazard when parking on any kind of slope. If the brake is stuck in the engaged position, you should not drive the vehicle as it will cause extreme damage to the rear brakes.
Do I need a special tool to change my rear brake pads with an electric parking brake?
Yes. To replace the rear brake pads, you must use a compatible diagnostic scan tool to put the EPB system into "Service Mode" or "Pad Change Mode." This retracts the electric motors on the calipers, allowing you to push the pistons back. Manually forcing the pistons back without using this electronic procedure can damage the caliper actuators.
Technical Specifications
OEM Part Numbers: 59700-2T700 597002T700
Controls the Electric Parking Brake (EPB) and Auto Hold systems. Located in the center console.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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