What to Do When Transmission Fluid Temperature Is Too High?
1 Answers
Transmission fluid overheating is generally caused by coolant issues, so regularly replacing high-quality coolant can prevent transmission fluid overheating. Below is extended information: 1. Fluid temperature below 135°C: Generally, transmission fluid temperature should not exceed 120°, with 80° or 90° being optimal. Prolonged temperatures above this range will accelerate the degradation of transmission fluid components and usability. Under normal driving conditions, transmission fluid temperature is typically below 135°C. 2. Fluid temperature reaches 135°C: Excessive vehicle use, such as overloading towing, driving in 4WD mode set for snow or off-road conditions, or operating with excessive torque converter slippage, may cause transmission fluid temperature to reach 135°C. When the transmission fluid temperature hits 135°C, an installed transmission fluid overheating warning system will simultaneously display "Oo-135c" (Note: "Oo" stands for Oi-Overheating) and emit a chime as an alert. The purpose of the warning is to actively prompt the user to stop the vehicle, shift to neutral, engage the parking brake, and keep the engine idling, allowing the fluid circulation to enter cooling mode for rapid temperature reduction until the alarm signal disappears, thereby avoiding potential safety hazards caused by continuously rising fluid temperature.