Frequently asked questions

Diagnosing an automatic transmission failure requires several steps: checking the fluid level and condition, performing a test drive to identify symptoms (jerking, noise, power loss), reading error codes with a diagnostic tool, and visual inspection of components. Our detailed diagnostic guides walk you through each step to quickly identify the root cause of the problem.

The cost of an automatic transmission repair varies considerably depending on the nature of the fault and the vehicle model. A simple fluid change can cost between 100 and 300 euros, while a torque converter repair can reach 1,000 to 2,000 euros. A complete overhaul or replacement can cost between 2,000 and 5,000 euros. Our resources help you accurately identify the fault to avoid unnecessary repairs and optimize costs.

Common symptoms include: jerking or jolting during gear changes, abnormal noises (grinding, clunking), power loss or difficulty accelerating, fluid leaks, engine warning light on, burning smell, and difficulty shifting certain gears. If you notice these symptoms, it is important to have your vehicle diagnosed quickly to prevent further damage.

The type of fluid depends on the model and brand of your automatic transmission. Each manufacturer specifies a particular fluid type (for example, ATF for some brands, or specific fluids like Dexron, Mercon, etc.). It is crucial to use the manufacturer-recommended fluid, as an unsuitable fluid can seriously damage the transmission. Our technical manuals detail the exact specifications for each model.

Service frequency varies by manufacturer and driving conditions. Generally, a fluid change is recommended every 60,000 to 100,000 kilometres for modern automatic transmissions, or every 2 to 3 years. For vehicles used intensively (towing, city driving), more frequent service (every 40,000 km) may be necessary. Consult your vehicle manual or our guides for recommendations specific to your model.

Some simple operations like fluid changes can be performed by experienced amateurs, but most repairs require specialized tools, in-depth technical knowledge and a suitable working environment. Complex repairs (valve body, torque converter, solenoids) should be entrusted to professionals. Our resources guide you through operations you can do yourself and help you identify when to call a professional.

Error codes are accessible via an OBD-II diagnostic tool. Each code corresponds to a specific problem (for example, P0700 indicates a general transmission problem). Our diagnostic guides include a comprehensive database of error codes with their meaning and recommended corrective actions, allowing you to quickly identify the source of the problem.