water flooding and F11 error

We have a Kenmore He3t washer that is 10 years old. Today I came home to find the F11 code and water all over the floor. I have noticed that the spin cycle has gotten dramatically louder recently, as if the tub was off-balanced.

From reading across the web, it sounds like the F11 error is often caused by a wiring disconnect; could the increased vibration from the spin cycle cause a disconnect?

I have not yet opened the machine up, but it sounds like there are two springs that hold the tub in place, and that these can stretch with age. It sounds like I might want to replace these springs. I think I have read that there are fittings for 4 springs. Is this true, and if so would the spin cycle be more balanced if I installed the 2 extra springs?

Is the water on the floor related to the F11 error code?

Thanks in advance for any suggestions!

I checked the connections, and one of the connectors at the MCU from the CCU was just slightly loose. Pushing in on the connector solved the "F11" problem, and the machine ran through a Drain & Spin cycle.

What do I do from here to prevent a recurrence? I assume the vibration from the tub worked the connector loose. Do the two springs and four shock absorbers that support the tub age, like automotive counter-parts? After 10 years of almost daily use, I am tempted to order new springs and shocks for the washer, to see if I can dampen the vibrations. Or is there a test for function?