Electronics spins at the XC90

Hello elk driver, I have a problem with my XC90, D5, MY 2005, about 110000km. The whole thing started yesterday as follows: First came a message that the slip protection is switched off, but that went after I had to get strong into the irons due to weather conditions. After I turned off the vehicle and the ignition key pulled the rear park assistant went on as if I had the reverse gear in it. Dwindled I put the key in the ignition lock and turned on Pos. II. But not all the lights went on. However, I could start the car. After I tested again, all the lights went on again. When the remote control to lock up I noticed that the car didn’t close immediately, had to push several times on it until the ZV worked. Today morning when I wanted to drive away, I saw the brake lights burn on the car and then the BC showed “check the brake light”. I started the car, all the lights lit as always and I went off. After a while strange things happened.