2025 Kia K4 Seat Memory Module: A Guide to Replacement, Reset Procedures, and Programming

What the Seat Memory Control Module Does on the 2025 Kia K4

The Seat Memory Control Module is a small computer that manages the Integrated Memory System (IMS) for the driver's side. Its job is to remember and recall the precise positions of the power-adjustable driver's seat and the side-view mirrors. When a driver saves a position, the module records the data from various sensors within the seat and mirror assemblies. Pressing a recall button prompts the module to send power to the appropriate motors until the sensor data matches the saved settings. On some trims, this system may also be linked to the Head-Up Display (HUD) position. It is a key component for vehicle personalization and convenience, especially when multiple people drive the same car.

Symptoms of a Failing 2025 K4 Seat Memory Module

As the 2025 K4 is a new model, widespread, long-term failure patterns have not yet emerged. However, based on failures in similar systems, you may experience the following issues. Often, the manual seat adjustment controls will still work correctly, but the memory functions will not.

• Memory Presets Won't Save or Recall: The most common symptom is the inability to save a new seat position or recall a previously saved one. You might press the button and nothing happens, or you may hear a single beep without any seat movement.
• Intermittent Function: The memory buttons may work one day and not the next. This can sometimes be influenced by temperature or humidity.
• Erratic or Incorrect Movement: The seat may move to the wrong position, or move in the opposite direction requested. In some cases, the seat might move part of the way and then stop unexpectedly.
• Unresponsive Memory Buttons: The 'SET', '1', or '2' buttons on the door panel do not respond at all, and no confirmation chime is heard when they are pressed.

A technician would diagnose this issue by using a professional scan tool to check for Body-related Diagnostic Trouble Codes (DTCs). While specific codes for the K4 are not yet widely documented, they typically start with a 'B' (for Body), such as the B1B88 code seen in other makes for a seat motor relay fault.

Known Issues, Recalls, and Service Actions for the 2025 Kia K4

As of mid-2026, there are no recalls or Technical Service Bulletins (TSBs) specifically related to the seat memory control module for the 2025 Kia K4. However, a few campaigns have been issued for the vehicle that owners should be aware of:

• NHTSA Recall 25V548 (Kia Campaign SC349): This recall addresses improperly tightened engine connecting rod bolts, which could lead to a loss of drive power. This is a critical engine-related safety recall and is unrelated to the vehicle's electronics.
• NHTSA Recall 26V046 (Kia Campaign SC361): A software error can cause the main instrument panel display to go blank, hiding critical information like the speedometer and warning lights. The fix is a software update performed by a dealer or over-the-air. This does not directly affect the seat module, but it highlights the software-dependent nature of modern Kias.
• Service Action SA606: This non-public campaign was for a small number of early-production K4s that may have had their windshield washer fluid contaminated with engine coolant at the factory.

System Reset and Programming Requirements

DIY First Step: Integrated Memory System (IMS) Reset

If your seat memory is acting up, the first step is to perform a system initialization. This is a manual reset procedure that recalibrates the seat position sensors and can often resolve issues without needing any tools.

1. Stop the vehicle and shift into Park (P).
2. Leave the ignition ON (or the vehicle running).
3. Open the driver's door.
4. Using the manual seat controls, move the seat bottom all the way forward and the seatback all the way forward (as upright as possible).
5. Press and hold the 'SET' button and the seat 'forward slide' switch simultaneously for about 2-3 seconds.
6. A beep will sound, and the seat will automatically move all the way back, then to a central position to complete the reset.

After the reset is complete, you will need to save your desired seat positions again. If this procedure does not fix the problem, the module itself may be faulty or require professional programming.

Module Replacement: Programming May Be Required

Replacing an electronic module in a modern vehicle is rarely a simple plug-and-play process. While there is no definitive statement from Kia yet for the 2025 K4, it is highly likely that a replacement Seat Memory Control Module—whether new or used—will require programming to function correctly.

This process, often called 'variant coding', involves using a dealer-level diagnostic tool (like the Kia GDS/KDS) to introduce the new module to the vehicle's network. The tool tells the car's main computer that the module is present and configures it for the specific options on that vehicle. Without this step, a replacement module may not work at all. While some advanced independent shops may have the necessary J2534 pass-thru tools and software subscriptions to perform this, a Kia dealership is the most reliable option.

Buying a Used 2025 K4 Seat Memory Module

Given the newness of the K4, the market for used parts is just beginning to develop. However, buying a used OEM module can be a cost-effective option if you know what to look for.

• Verify the Part Number: The most critical step is to match the part number exactly. The known OEM part number is 88B70-GG000. Even a single digit difference can mean incompatibility.
• Physical Inspection: Check the module's casing for any signs of cracks, heat damage, or water intrusion. Pay close attention to the electrical connector pins—they should be straight, clean, and free of any corrosion.
• Source Vehicle: If possible, find out the trim level of the vehicle the part came from. While the part number should ensure compatibility, modules from vehicles with different features (e.g., ventilated seats vs. only heated) can sometimes have internal differences.
• Programming Risk: As mentioned, be prepared for the module to require programming. A used module that works perfectly may still need to be coded to your vehicle's VIN.

Estimated Replacement Costs

The Seat Memory Control Module is typically located under the driver's seat, making it relatively easy to access once the seat is unbolted. The prices below are estimates as of mid-2026 and can vary by location and supplier.