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What is the reason for the Volkswagen yellow sun exclamation mark?

2 Answers

DeIsabelle

07/25/25 10:28am

Volkswagen yellow gear exclamation mark is the automatic transmission fault warning light, indicating that there is a problem with the transmission. The reasons for transmission failure are as follows: Internal contamination of the transmission: When an automatic transmission malfunctions, in many cases, it is not due to damage to the internal valve body, but rather the presence of stubborn dirt and impurities inside. Especially when dirt and impurities accumulate in the valve body, causing blockages, it becomes impossible to effectively regulate the oil pressure, leading to jerking, impact, and slippage issues. High temperatures damaging the transmission: High temperatures can degrade the quality and frictional properties of automatic transmission fluid, increasing friction and wear, which in turn leads to transmission noise. Additionally, sludge can form inside the transmission, causing jerking and impact. If the temperature exceeds 120 degrees Celsius, rubber sealing materials will begin to harden, eventually leading to leaks and reduced hydraulic pressure. If the temperature rises even higher, the transmission will start to slip, and this slippage will further increase the temperature.

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VanZane

08/11/25 7:42pm

I'm the kind of person who often helps friends fix their cars. Whenever I see that yellow sun exclamation mark flashing on the dashboard of a Volkswagen, I can guess nine times out of ten that it's a problem with the lights. It could be a burnt-out headlight, a blown fuse—the fuse box is usually located under the driver's seat, just check the manual; poor wiring contact like a loose plug; or even a malfunctioning controller. Fixing it yourself isn't hard—start by simply replacing the bulb, and if that doesn't work, check the fuse. But don't push your luck, especially when driving at night—it's risky, with poor visibility and a higher chance of accidents. I recommend regular maintenance of the vehicle's lighting system, such as checking bulb conditions every six months. Developing good habits can prevent unexpected breakdowns, and repair costs are usually low, with minor issues often fixed for just a few dozen bucks.

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