Crucially, DTC1525F3 is almost never the actual root cause of your car's problem. Instead, it is a . The vehicle’s Engine Control Unit (ECU) has detected a fault in another system (like the engine or brakes) and, as a safety measure, has disabled the Cruise Control and Speed Limiter because it can no longer trust the data coming from those systems. Common Symptoms
Check real-time values for the accelerator pedal percentage and brake switch status to ensure they toggle correctly.
This specific fault code is unique to the architecture shared across the Alliance. While the underlying technology is similar, the manifestation of the error can vary slightly by brand.
If a new switch and wiring checks pass, perform a :