Did you every hear of a part called relay modular to fix your air conditioner in car?

I haven't encountered the term "relay modular" specifically used to describe a single part for fixing a car air conditioner. Car air conditioning systems use relays, but they're typically referred to as individual components (e.g., AC compressor relay, blower motor relay). The term "modular" usually implies a larger assembly or unit containing multiple components.

It's possible:

* The term is specific to a certain car make or model: Manufacturers sometimes use unique terminology.

* "Modular" refers to a repair kit: This might contain multiple relays and other related parts needed for a common AC repair.

* It's a miscommunication or misspelling: The actual part might have a different name.

If you have a part number or more details about where you heard this term (a mechanic, an online retailer, etc.), that would help clarify what it is. Providing the make, model, and year of your vehicle would also be beneficial.