Renault Df104 New May 2026

The "new" occurrences of this code in later models are frequently linked to the increased complexity of interconnected electronic modules:

: Often accompanied by "SERVICE" or "STOP" lights.

: Can indicate an issue with "Thermoplunger relay number 2" or a fault in the cooling fan circuits (Fan 1 or Fan 2).

: May appear as a "CAN - error communication" fault, sometimes caused by water intrusion into electronic modules. Symptoms and Dashboard Warnings

When DF104 is present, drivers typically see a combination of warning lights and messages on the trip computer:

: A critical message that may prevent the engine from starting or cause the handbrake to malfunction.