In Renault vehicles, this code often indicates that the or Airbag module is having trouble "talking" to the rest of the car’s computers. 🔍 What DF104 Usually Means
In diesel models (like the Clio or Megane), DF104 can specifically point to a fault in the Thermoplunger Relay No. 2 circuit. Thermoplungers are used to help heat the engine coolant quickly in cold weather. Common Symptoms renault df104 new
Dirt or debris on the wheel ring can sometimes trigger related codes. Inspecting the wiring: The Renault DF104 New: A Deep Dive into
Renault Diesel Injection Fault Guide | PDF | Electrical Connector Thermoplungers are used to help heat the engine
Determine which module (ABS, Airbag, or Climate) is throwing the code using a professional OBD2 scanner.
The "New" model utilized the floor pan of the Renault 5 (the "Supercinq"’s predecessor) but with a critical modification: a reinforced central tunnel to house the 72-volt battery pack. The body was still fiberglass—chosen for lightness—but the front grille was redesigned to hide the new, more efficient cooling system for the motor controller. Visually, it looked like a Renault 4 that had been stung by a bee: upright, awkward, but unmistakably functional.