2011-2014 Sonata & 2014-15 Optima Power Steering Module Failure and Recall

Key Issues: 2011-2014 Hyundai Sonata & 2014-2015 Kia Optima

Owners of the 2011-2014 Hyundai Sonata and 2014-2015 Kia Optima may experience issues with the electronic power steering, often stemming from the Power Steering Control Module. These vehicles share a platform and key components, including the Motor Driven Power Steering (MDPS) system. While the most prominent issue led to a recall for the 2011 Sonata, similar symptoms can appear across all listed models.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

Hyundai Sonata (2011-2014)

For Sonatas built after October 31, 2010, Hyundai used a circuit board with an improved protective coating to prevent this specific failure.

Kia Optima (2014-2015)

While not subject to the same control module recall as the Sonata, the 2011-2014 Optima (which includes the years in this guide) has known steering issues covered by Technical Service Bulletins (TSBs):

• TSB CHA060: This bulletin addresses a "notchy" or sticking feeling in the steering wheel. The cause could be either a software glitch in the MDPS control unit or a fault in the steering motor itself. The dealer's solution is to either update the module's software or replace the steering gear assembly.
• TSB CHA044 / Customer Satisfaction Program CS1604: This addresses a clicking or noisy steering wheel, especially when stopped. The cause is a worn flexible coupling in the steering column. While this is a mechanical part, its symptoms can sometimes be confused with an electronic issue. The repair involves replacing the small, star-shaped rubber coupler.

Symptoms of a Failing Power Steering Control Module

A bad power steering control module can cause a range of symptoms. Be aware that some of these can also be caused by other failing parts in the steering system, like the electric motor or sensors.

• Sudden Loss of Power Steering: The most common and dangerous symptom is the intermittent or complete loss of power assist. The steering will suddenly become very heavy and difficult to turn, especially at low speeds.
• Power Steering Warning Light: A failure in the EPS system will almost always trigger the EPS or a steering wheel-shaped warning light on your dashboard.
• Inconsistent Steering Feel: You might notice the steering assist comes and goes, feeling normal one moment and heavy the next.
• Vibration in Steering Wheel: A failing module can send erratic signals, causing the steering motor to cycle rapidly and create a vibration felt in the wheel, particularly at low speeds.
• Whining or Clicking Noises: Erratic commands from the module can cause the electric motor to produce unusual whining or clicking sounds from the steering column area.

Associated OBD-II Codes

While a standard OBD-II scanner may not read detailed EPS codes, a more advanced scan tool might find codes related to the power steering system. A common generic code is P0637 - Power Steering Control Circuit High, which indicates a problem in the circuit. Hyundai/Kia specific codes often start with a "C" (for Chassis) and require a dealer-level scan tool for accurate diagnosis.

Buying a Used Power Steering Control Module

Given the high cost of a new module from the dealer, a used OEM part can be a cost-effective solution. However, for an electronic part like this, careful purchasing is key.

• Verify the Part Number: The most critical step. The primary OEM part number for this module is 56340-3Q000. You may also see alternate numbers like 3Q563-99580. Physically inspect your old module and match this number to the used part you are considering.
• Source from Recall-Free Vehicles: If possible, try to source a module from a 2012-2014 Sonata or a 2014-2015 Optima, as these were not part of the 2011 Sonata's circuit board recall and likely have the improved protective coating.
• Physical Inspection: Check the module for any signs of physical damage, corrosion on the pins, or evidence of water intrusion. The 2011 Sonata recall was due to environmental damage, so a clean, well-preserved part is essential.
• Ask About Programming: Be aware that this module will likely require programming or calibration to function correctly in your vehicle. Factor this potential cost into your purchase decision.

Programming & Installation

Does this module need to be programmed?

Yes, a replacement Power Steering Control Module will likely require programming or calibration. The module needs to be configured to your vehicle's specific options and communicate with other systems, such as the Steering Angle Sensor (SAS). Failure to calibrate the module can result in the power steering not working, warning lights staying on, and problems with the vehicle's stability control system. While some advanced independent shops may have the tools (like a GDS scanner) to perform this, it is often a dealer-level task. You should confirm with your mechanic before purchasing the part.

Replacement Overview

The Power Steering Control Module is typically integrated with the electric motor assembly on the steering column, located under the driver's side dashboard. Replacement involves removing the lower dash panels and knee airbag to access the steering column, disconnecting the electrical connectors, and unbolting the module/motor assembly. This is a moderately difficult job due to the tight space and the need to potentially remove the entire steering column. After physical installation, the calibration procedure must be performed.

Cost Breakdown

Prices can vary significantly based on the source of the part and local labor rates.

Frequently Asked Questions (FAQ)