If you are searching for "DF357 Hot," it is likely because you notice the car drives fine when cold, but acts up after 20–30 minutes of driving.

The Renault fault code typically appears in vehicles equipped with a CVT (Continuously Variable Transmission) , such as the Megane or Fluence. When accompanied by a "hot" status, it indicates a critical issue within the transmission's control system . Understanding the DF357 Fault

Step 2: Analyze the Fuel Trim and Oxygen Sensors (If Injection Module)

The DF357 code is not exclusive to a single model. It has been reported across the Renault lineup, primarily in models equipped with the Advanced Driver-Assistance Systems (ADAS) that include Adaptive Cruise Control. The most commonly affected models include:

Faulty speed or pressure sensors within the transmission housing.

The DF357 hot error code can be a frustrating issue for Renault owners, but with the right knowledge and approach, it can be diagnosed and repaired. By understanding the causes, symptoms, and repair procedures outlined in this article, you'll be well-equipped to tackle this issue and get your Renault back on the road. Remember to stay proactive with regular maintenance, and don't hesitate to seek professional help if you're unsure about any aspect of the repair process.

In some cases, a TCU software reflash from a Renault specialist can resolve "ghost" codes.

If you are using Renault-specific diagnostic software like or CLIP , you will usually see these sub-codes populate alongside DF357, helping pinpoint which wheel or circuit is causing the loss of communication. How to Diagnose and Fix the DF357 Code