2013 Lincoln MKX HVAC Module: Solving Temperature Problems and Programming a Replacement
This guide explains why your 2013 Lincoln MKX blows hot air on one side and cold on the other, and what's required to program a replacement HVAC control module.
- This module MUST be programmed to the vehicle after installation using a process called Programmable Module Installation (PMI). It is not a plug-and-play part.
- When buying a used module, you must match the engineering ID number printed on your original part's label (e.g., CA13-18C612-AG).
- The most common failure symptom is uneven heating/cooling, such as hot air on the driver's side and cold air on the passenger's side.
- New OEM modules are becoming difficult to find. A used OEM module is a viable option, but the cost of professional programming ($150-$300) must be factored in.
Symptoms of a Failing 2013 Lincoln MKX HVAC Control Module
When the HVAC control module begins to fail, it can cause a range of confusing symptoms. Often, these issues are misdiagnosed as problems with other parts, like the blend door actuators or the A/C compressor.
- Uneven Temperatures: The most widely reported symptom is one side of the cabin blowing hot air while the other side blows cold, even when both are set to the same temperature. While this can be a faulty blend door actuator, if replacing the actuator doesn't solve the problem, the module is the next likely culprit.
- Unresponsive or Erratic Controls: The climate control panel may become completely unresponsive, or it might seem to have a mind of its own, changing fan speeds or vent modes randomly.
- Blower Fan Malfunctions: The fan may fail to turn on, or it could be stuck running at full speed and cannot be adjusted.
- A/C or Defrost Not Working: A bad module can fail to send the correct signal to engage the A/C compressor clutch or the rear defrost function.
- Associated OBD-II Codes: While a failing module may not always set a code, it can be associated with codes for related components. Technicians may find codes like B11E5 or B11E6 for blend door actuators, but the root cause may be the module itself. A Technical Service Bulletin (TSB) also links poor A/C performance to a diagnostic trouble code (DTC) P06A0 stored in the Powertrain Control Module (PCM).
Pro Tip: Before condemning the HVAC module for uneven temperatures, try a system reset. A procedure found on owner forums suggests turning the engine on with the A/C off, then pressing and holding the A/C and rear defrost buttons together for 10 seconds, then pressing the A/C button twice. This can sometimes recalibrate the system and temporarily resolve glitches.
Known Issues, TSBs, and Recalls
As of mid-2024, there are no active safety recalls for the HVAC control module on the 2013 Lincoln MKX. However, Ford has issued related Technical Service Bulletins (TSBs), which are instructions for dealers on how to diagnose and repair common problems.
- TSB SSM 47850: This bulletin addresses poor A/C performance or improper climate function in some 2013-2019 Ford and Lincoln vehicles. It notes that this issue may be accompanied by diagnostic trouble code P06A0 in the PCM.
Buying a Used HVAC Control Module for Your 2013 MKX
Since new OEM modules are becoming scarce and may be discontinued, a used OEM module is often the most practical and affordable solution. However, there are critical details you must get right.
Warning: This module absolutely requires professional programming to function in your vehicle. A used module is not a plug-and-play part. If you install a used module without programming it, you will likely experience issues like the A/C not turning on, incorrect temperature readings, or features not working.
How to Verify Compatibility
The most important step is to match the engineering ID number printed on the module's label. Do not rely on the service part number for visual matching.
- Engineering Number: This is the number printed directly on the part itself (e.g., CA13-18C612-AG). This number identifies the part as it was designed and built. You must match this number from your original module to the used one you are buying.
- Service Number: This is the number used by a dealership to order a part from a box (e.g., DA1Z-19980-A). While useful for ordering, the engineering number on the part is the key to ensuring compatibility when buying used.
Before ordering, verify that the engineering ID on the used module is one of the following compatible numbers for the 2013 MKX: CA13-18C612-AG, DA13-18C612-AA, or DA13-18C612-AB.
Programming Requirements
When a new or used module is installed, it must undergo a process called Programmable Module Installation (PMI). This procedure uses a diagnostic tool to copy your vehicle's specific configuration data (including its VIN and options like heated/cooled seats) into the replacement module.
- Who can program it? A Ford or Lincoln dealership is the most reliable option. Many independent repair shops that specialize in Ford vehicles or automotive electronics will also have the necessary tools, such as the Ford IDS/FDRS scan tool or a J2534 pass-through device with a subscription to the Ford service network.
- Can a DIYer program it? Advanced DIYers sometimes use software like FORScan to perform programming. However, this is a complex process that requires saving the 'as-built' data from your original module and writing it to the new one. It is not recommended for beginners.
Cost to Replace the 2013 Lincoln MKX HVAC Module
The total cost involves the part itself, labor for installation, and a separate fee for programming.
| Item | Estimated Cost | Notes |
|---|---|---|
| New OEM Module | $200 - $400+ | Availability is limited as the part may be discontinued. Price is for the part only. |
| Used OEM Module | $50 - $150 | Price varies by recycler and condition. Ensure you match the engineering ID. |
| Remanufactured / Repair Service | $400 - $500 | You send your original module to be repaired. This avoids programming issues but involves vehicle downtime. |
| Shop Labor (Installation) | $125 - $200 | The module is located behind the center console trim, requiring some dash disassembly. |
| Shop Labor (Programming) | $150 - $300 | This is a separate, required step after installation. Prices are for dealer or specialist shops. |
Frequently Asked Questions (FAQ)
Do I have to get this module programmed at a Lincoln dealer?
No, not necessarily. While a Lincoln or Ford dealer can certainly perform the programming, many well-equipped independent auto repair shops have the factory scan tools (like Ford IDS) or J2534 pass-through devices required to do it. Always call ahead and confirm they can perform a 'Programmable Module Installation' (PMI) on a 2013 Lincoln.
Can I replace the HVAC module myself?
Yes, a moderately skilled DIYer can physically replace the module. It involves removing trim panels around the center console to access the unit. However, the vehicle will not operate correctly until the module is professionally programmed. You can save on labor by installing the part yourself and then driving the vehicle to a shop for the final programming step.
What's the difference between the engineering number and the service part number?
The engineering number (e.g., CA13-18C612-AG) is what Ford stamps on the part during manufacturing. The service number (e.g., DA1Z-19980-A) is what a dealer uses to order the part in a box. When buying a used part, the engineering number is the most reliable identifier to ensure you are getting an identical component.
My A/C blows hot on one side. Is it the actuator or the module?
It could be either. The blend door actuator is a more common failure and a less expensive part. Often, a clicking sound from the dash points to a bad actuator. If you replace the actuator and the problem persists, the HVAC control module is the next most likely cause. A professional diagnosis with a scan tool that can read live data from the module and command the actuators is the best way to be certain.
Technical Specifications
OEM Part Numbers: DA1Z-19980-A DA1Z19980A CA13-18C612-AG CA1318C612AG DA13-18C612-AA DA1318C612AA DA13-18C612-AB DA1318C612AB DA13-18C612-CA
Controls dual-zone automatic temperature, fan speed, air distribution, A/C compressor engagement, and heated/cooled seat functions (if equipped). Communicates with the vehicle over the CAN bus network.
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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- Symptoms of a Failing 2013 Lincoln MKX HVAC Control Module
- Known Issues, TSBs, and Recalls
- Buying a Used HVAC Control Module for Your 2013 MKX
- How to Verify Compatibility
- Programming Requirements
- Cost to Replace the 2013 Lincoln MKX HVAC Module
- Frequently Asked Questions (FAQ)
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