DSC, Brake and ABS Lights, Suspension inactive

[shamrock99]

So I am having a problem with my 2005 X54.8is and little confused as to how to proceed. So here's the deal, I was towing my boat up to the lake a few weeks ago, when I stopped to pay the toll I had the 3 lights go on, the DSC, BRAKE and then the ABS. as well as the suspension inactive I pulled over shut the care off fo like 5 minutes then resarted, everything went off. But then came back on the next day.
So i brought it in for an oil change at a local indy guy down the street, he changed the oil and came up with these codes,

60AF run flat
5E28 WHEEL SPEED FRONT LEFT
5E52 WHEEL SPEED FRONT RIGHT
5F3A TRANSFER CASE MALFUNCTION-INTERNAL
5DD0 CONTROLE MODULE OVERVOLTAGE
5EB1 STEERING ANGLE SENSOR

So he said it's probably just the wheel sensors and replaced both front wheel sensors, but the same lights on, So my concern is that he wants to just go down the list and replace everything that he sees on the list and this couild get very very costly.

I did disconnect the battery for about 5 minutes, everything came back on.
I also turned the wheel all the was to the left and then to the right as well. checked all the fuses etc.....

Any suggestions on how to proceed? or just throw in the towell and let the dealer have at it?