I'm inviting those of you who experience a sport mode error once a day and then don't get it again until the car is completely cool. This problem recurs 2-3 months after you replace the solenoid valve. I've been to many places and had many repairs done. They were all temporary solutions, and the problem recurred. If you constantly get errors when shifting from 3rd to 4th gear, this doesn't apply to you, let me say that upfront. If you experience this problem multiple times a day, you have a mechanical issue. Now, let's get to our problem. As you know, the AL4 transmission is a very sensitive product. And our problem stems from a momentary drop in pressure. This pressure drop is related to the transmission oil thickening as it cools. You know how they say to wait 3-5 minutes after starting the car to let it warm up before moving? That's what's important for your engine's health. Your transmission oil doesn't warm up while the engine is running at idle. The transmission oil warms up with the movement of the gears inside the transmission. Now, many people will say, "Start the car, but drive for a while without speeding." Yes, technically that's correct, but it doesn't work that way on the street. Driving at 30 km/h when there's a clear road ahead and cars behind you triggers tinnitus, guilt, and other health problems. When you speed up a bit, the speed becomes 50 km/h, and you shift to 3rd gear. The gap between 3rd and 4th gear is very small. The car shifts to 4th gear at 70 km/h. You usually only experience this problem while cruising in 3rd gear or when shifting from 3rd to 4th. (Some will ask, "What does pressure have to do with driving?" While you're maintaining a constant 2000 rpm, the speed continues to increase, and our transmission is considering shifting gears.) So, how do we heat the oil without making ourselves look bad or triggering the check engine light? Guys, activate SPORT mode. I activate SPORT mode as soon as I start the car. As you know, the speed limit is 50 km/h in most city areas. In SPORT mode, the car is in 2nd gear at 50 km/h. If I were using it in normal mode, it should be in 3rd gear. Now, what have I achieved? I'm going 50 km/h without the driver behind me cursing, and I'm also warming up my transmission. Through trial and error, I exit sport mode when the engine reaches 70-75 degrees. After that, I continue in normal mode. I haven't received any errors for a week. (Burakalip2026-03-05 11:58:28)