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What does it mean when the transmission warning light comes on?

2 Answers

Rocha

07/29/25 4:36pm

Reasons for the transmission warning light coming on: 1. Transmission software issues - either the transmission software hasn't been updated for a long time or there are defects in the transmission software, causing the transmission warning light to illuminate. 2. Damage to the transmission control unit prevents the car from moving normally after shifting gears, triggering the transmission warning light. 3. Failure of internal transmission sensors causes gear engagement issues without movement, illuminating the transmission warning light. 4. Broken internal wiring in the transmission leads to communication problems, resulting in the transmission warning light turning on. 5. Damage to internal transmission gears or shifting mechanisms causes the transmission warning light to illuminate.

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ArthurAnn

08/14/25 5:54am

The transmission warning light coming on is indeed a cause for concern, as it typically indicates the transmission computer is issuing an alert. I've encountered many similar cases where the most common issues were insufficient or deteriorated transmission fluid - you should be cautious if the fluid appears black with a burnt smell. It could also be sensor failure, particularly when the vehicle speed sensor gets dirty and triggers false alarms. Modern vehicles' electronic control systems are complex; sometimes even a loose connector can trigger the warning light. The most worrisome scenario would be mechanical failure, such as worn clutch plates or gear slippage. I recommend pulling over safely and attempting to restart the vehicle first. If the light remains illuminated, don't continue driving - I learned this the hard way when I stubbornly kept going and ended up paying 8,000 yuan for transmission repairs.

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