What are the reasons for the transmission warning light to illuminate?

1 Answers
AdrielDella
07/28/25 6:55pm
Here are the reasons for the transmission warning light to illuminate: 1. Sporadic or persistent faults in the automatic transmission's electronic components (sensors, solenoid valves, or the control module). 2. Mechanical failures in automatic transmission models, such as engine idling or transmission slipping. After severe transmission issues, the transmission control unit will trigger a fault alert, causing the transmission warning light to illuminate. 3. Overheating of the transmission fluid can also cause the warning light to come on. This may occur due to overfilling the transmission fluid or blockages inside or outside the transmission cooler (common during high-temperature seasons). Additionally, overheating protection may activate due to slippage in the torque converter. In cases of mechanical failures like engine idling or transmission slipping, the transmission control unit will activate a fault alert and illuminate the transmission warning light.
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