Bmw x5 e53 4.4 2001: Trans Gearbox Error, Failsafe Proog Post-General Renovation

Hello, today, after starting the car, I got a trans failsafe proog message. I connected the car to the computer, 4 same errors popped up, unfortunately I do not know what because this computer did not show their name. The gearbox is after a general renovation in April 2017, the cost of repairing is 8 thousand. After resetting the errors, the gearbox did not enter the mode, it does not jerk, the gears change, it behaves perfectly at 140 and at a lower speed. I put out the car fired and so far the error does not come back. Could this be the cause of wetness and rainfall? Or that 2 weeks ago I had a problem with the current in the car escaping and my battery was dead and then the box also went into the mode but after restarting it returned to normal and today I had to use the computer to erase the error

Well, without error codes, you don't know anything anyway. You can guess. You'll need to read the error codes after you hit Safe Mode again.

Today I read an error and an error of one solenoid valve popped out. I called the workshop that deals with crates and says that it is possible that the driver of the box gets moisture due to raining and this is the cause of the error. I will add that this error appears when it is raining

Check the solenoid valve socket and plug for moisture.

To check it, you need to disassemble the crates?

No. You have to go under the car and remove the plug. See also the box controller, it is on the right side in the pit, if water is getting there.

Ok thanks for the hint

Added after 1 [hours] 12 [minutes]:

I have an appointment for a workshop on July 30th. Today the gearbox has entered the mode, it is still raining after starting the car and driving a short distance, I guessed it, I fired the car and the error disappeared.