2016-2022 Honda HR-V A/C Control Module: A Guide to Failures and Replacement
Diagnose unresponsive buttons, erratic temperatures, and blower issues, and learn how to choose the right used replacement module for your HR-V.
- The biggest pitfall is buying the wrong module; you must match your HR-V's original system (Automatic vs. Manual controls).
- Common failure symptoms include unresponsive buttons, incorrect air temperature, and a fan that is stuck on one speed or won't turn on.
- A used OEM module is a cost-effective solution, often priced between $75 and $150, compared to a new OEM part which can exceed $500.
- Replacement is DIY-friendly, typically requiring only basic trim removal tools and a screwdriver, and does not require programming.
Common Symptoms of a Failing HR-V A/C Control Module
When the A/C control module in a 2016-2022 Honda HR-V begins to fail, it can cause a range of frustrating issues. Because this unit is the central command for the entire HVAC system, a fault can manifest in several ways. You might notice one or more of the following problems:
- Unresponsive Controls: The buttons or knobs on the control panel may stop working entirely or only work sometimes. You might press a button and get no response from the system.
- Incorrect Temperature Output: The system may blow only hot air, only cold air, or air that doesn't match the temperature you've selected. This happens when the module fails to properly command the blend doors that mix hot and cold air.
- Blower Fan Issues: The fan might not turn on at all, get stuck on a single speed (often high), or run continuously even when the system is off.
- Airflow Stuck in One Position: The air might only come out of the defrost vents, floor vents, or dash vents, and you're unable to switch between modes.
- Blank or Flickering Display: The digital screen on the module may go blank, flicker, or show garbled information.
- A/C System Inoperative: In some cases, a faulty module can prevent the A/C compressor from engaging, meaning you won't get any cold air.
Pro Tip: Before assuming the control module is bad, always check the simple things first. Inspect the related fuses in the vehicle's fuse box. A simple blown fuse can mimic the symptoms of a failed module and is a much easier and cheaper fix.
Buying a Used 2016-2022 HR-V A/C Control Module
Purchasing a used OEM A/C control module is a smart way to save money, as new units can be expensive. However, it's crucial to buy the correct part to avoid compatibility issues.
Compatibility is Critical: Automatic vs. Manual Controls
Warning: The single most important factor is ensuring the replacement module matches your vehicle's original equipment. The 2016-2022 HR-V was available with two different types of climate controls: a manual system (found on lower trims like the LX) and an automatic temperature control system (typically on EX, EX-L, and Touring trims). These two types of modules are NOT interchangeable. A module for an automatic system will not work in a vehicle originally equipped with manual controls, and vice-versa.
- Automatic Climate Control: Features a button labeled "AUTO" and allows you to set a specific temperature (e.g., 72°F). The module then automatically adjusts fan speed and air direction to maintain that temperature.
- Manual Climate Control: Has knobs for fan speed (with set levels like 1, 2, 3, 4) and temperature (with a blue-to-red gradient), but no "AUTO" button.
Verifying Part Numbers
The surest way to guarantee compatibility is to match the part number. The original part number is printed on a sticker on the module's housing. You may need to remove the old unit to see it. Known part numbers for the automatic climate control module include 79602-T7W-A81, 79602-T7W-A82, 79602-T7W-A83, and 79602-T7W-A84. Often, later part numbers in a sequence are updated versions that supersede the earlier ones. For example, 79602-T7W-A84 replaces the three previous versions.
What to Inspect on a Used Unit
When buying a used module, perform a careful physical inspection:
- Check the Faceplate: Look for deep scratches on the screen or button surfaces.
- Test the Buttons: Press each button to ensure it moves freely and has a positive 'click' feel. Mushy or stuck buttons are a red flag.
- Inspect Connectors: Look at the electrical connector ports on the back. Ensure there are no bent, broken, or corroded pins.
- Verify the Source: Ask the seller for the VIN of the vehicle the part came from. This can help confirm the trim level and whether it had automatic or manual A/C.
Known Issues, Recalls, and Technical Service Bulletins (TSBs) 🎬 Watch this video detailing common Honda HR-V problems and fixes
While there are no specific recalls for the A/C Temperature Control Module itself, there are some related items for the 2016-2022 HR-V's HVAC system.
- A/C Condenser Leaks: Honda issued a dealer message (NHTSA ID #10216883) searching for 2016-2021 HR-Vs with leaking A/C condensers to better understand the cause. An oil residue on the condenser might not always indicate a refrigerant leak from that part.
- Rear View Camera Recall: On 2019-2022 models, a recall (NHTSA campaign 24V384000) was issued because the rearview camera image may not display when starting the engine with a key. This was due to a design error in the audio display power circuit, which is adjacent to the climate controls.
- CVT Warranty Extension: While not directly related to the HVAC controls, a major TSB (22-025) extended the warranty on the CVT transmission for many 2016-2022 HR-Vs due to potential drive belt deterioration.
No widespread, documented failure pattern for the control module itself has led to a recall or specific TSB.
Cost of Replacement: New vs. Used
Choosing a used OEM module can lead to significant savings. Aftermarket options for this specific integrated control unit are not common.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $480 - $1100+ |
| New Aftermarket | Not Commonly Available |
| Used OEM | $75 - $150 |
| Shop Labor | $98 - $143 |
A/C Control Module Replacement Overview
Replacing the A/C control module on a 2016-2022 HR-V is generally straightforward and can be done by a DIYer with basic tools. The module is located in the center of the dashboard. The process typically involves carefully prying off surrounding trim panels, removing a few screws holding the unit in place, unplugging the electrical connectors from the back, and then swapping in the new unit.
- Difficulty: 2 out of 5
- Estimated Time: 0.5 - 1 hour
- Tools Needed: Plastic trim removal tools, Phillips head screwdriver.
Frequently Asked Questions (FAQ)
Do I need to program a used A/C control module?
For the 2016-2022 Honda HR-V, the A/C temperature control module is typically a plug-and-play part. No special programming or calibration is required after installation. However, on some other Honda models, a self-diagnostic procedure is recommended after replacement.
Can a bad A/C control module cause other electrical problems?
While not common, a severely failed module with an internal short circuit could potentially cause issues like draining the battery or interfering with other electronics on the same data bus. However, the most common symptoms are confined to the operation of the HVAC system itself.
Is the A/C control module the same as the blower motor resistor?
No. The blower motor resistor (or on some models, a blower motor control module) specifically controls the speed of the interior fan. A failed resistor typically results in the fan only working on the highest speed setting. The A/C control module is the main computer that tells the resistor what to do.
Why is my A/C blowing warm air? Is it the control module?
It could be, but it's more likely to be another issue. The most common causes for an A/C system blowing warm air are a refrigerant leak, a faulty A/C compressor, or a clogged condenser. If all other HVAC functions (like fan speed and mode control) work correctly, the control module is less likely to be the culprit.
Helpful Videos
Technical Specifications
OEM Part Numbers: 79602-T7W-A81 79602-T7W-A82 79602-T7W-A83 79602-T7W-A84
Designed for US market Honda HR-V models (EX, EX-L, Touring) equipped with automatic temperature control.
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.
- Honda HR-V:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Common Symptoms of a Failing HR-V A/C Control Module
- Buying a Used 2016-2022 HR-V A/C Control Module
- Compatibility is Critical: Automatic vs. Manual Controls
- Verifying Part Numbers
- What to Inspect on a Used Unit
- Known Issues, Recalls, and Technical Service Bulletins (TSBs)
- Cost of Replacement: New vs. Used
- A/C Control Module Replacement Overview
- Frequently Asked Questions (FAQ)
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