Modern Renault vehicles use a CAN Bus (Controller Area Network) to allow different computers (ECUs) to talk to each other. For example, the instrument cluster needs to talk to the engine to show RPM, and the ABS module needs to talk to the dashboard to show speed.
The CAN system uses two wires:
DF104 triggers when: There is a break in communication between two or more ECUs on the network. The "New" status on a diagnostic tool indicates that the fault is currently present or occurred in the most recent driving cycle and has not yet been cleared or resolved. renault df104 new
To understand the hype, we need a history lesson. In the early 1970s, Renault’s motorsport division needed a weapon for Formula France and the burgeoning European Formula Renault series.
The DF104 was not your standard Cléon-Fonte engine found in a Renault 12. It was a bespoke 1.6-liter (1565cc) inline-four racing engine. Its party trick? A crossflow aluminum cylinder head designed by Gordini, fed by two twin-choke Weber carburetors. Modern Renault vehicles use a CAN Bus (Controller
In period, it produced approximately 150 to 170 horsepower—massive numbers for a 1.6L in 1973. It revved past 8,000 rpm like a chainsaw and weighed next to nothing. It powered iconic open-wheelers like the Martini MK16 and Alpine A364.
Three factors are driving the price and demand for a "new" DF104 in 2024/2025. DF104 triggers when: There is a break in
Officially? No. Renault has no plans to re-enter the tractor business; they are busy with electric cars (Renault 4, 5, etc.).
However, the "new" DF104 is alive and well in the aftermarket. We are seeing the emergence of Continuation Tractors (similar to what Aston Martin did with the DB5). A small engineering firm in Normandy, Heritage Tracteurs, has registered a design right for the DF104 body. They are currently building 10 "Series 2" DF104s using re-cast blocks and modern internals, but with the original body dies.
These are sold as "New MFG 2025" units. The price? €68,000 before taxes.