Rep Power: 0

Last week after going over 40k miles and doing an oil change I got 4 warnings that came on. Check Engine, Vehicle Stability Assist, Electronic Power Steering and Brake System are the warnings. I notice no difference in how the engine is running and the steering and braking all seem no different as well. Any suggestions before I go see the dealer about this?

 
Rep Power: 222

Check battery connections? Did they come on for a moment and then go away?

 
Rep Power: 511

check battery connections. I've seen multiple random warnings like that that randomly go away. Saw it twice, and decided to go the the dealership to figure out wtf on the second one. Dealer wanted to charge me $150 to look at it. Told them to pound sand, disconnected/reconnected my negative terminal, drove for 5 minutes, all lights were back to normal. Didn't notice any performance issues when the lights were on

 
Rep Power: 0

No, the battery connections were good. I did disconnect the negative for a few minutes then reconnected and the caution lights were still on. The next day when moving the car they were not on and stayed off the remainder of the day. However, now they are all back on again. Dealer here wants $90 for diagnostics check.