4 Yellow Warning Lights (ABS, Brake, Tire, 4x4)
 

I have been getting a series of 4 yellow warning lights (ABS, Brake, Tire pressure monitor, and 4x4 with triangle and !) on the cluster of my 2004 X3 3.0i 6sp. All four lights are popping up together. After I stop and start the SAV, they reset and then pop up again sometime during my next drive. No set pattern as to when they are occurring but they always come on together. The X3 is driving like normal without any noticeable changes. I am thinking it is a bad sensor since the four lights are coming on together. I am going into the dealer this week to have it looked at and hoping it will throw a code when it is in to help diagnose.

Has anyone ever encountered this before? I have seached this forum and the others and not found any similiar posts which leads me to believe this isn't a known or common problem. The warning lights are significant enough to put fear in me that something is mechanically wrong, bigger than a simple bad sensor.

Thanks.

Update: X3 is back from the dealer for this problem. Took 2 trips, 4 days total in the shop to hopefully completely resolve. <fingers crossed>

What was done:
1.) First trip in, fault codes were indicating wheel speed faults in sensors in tires. However, the actual sensors tested out fine. So, tech swapped them in the tires to troubleshoot. Issue returned as soon as I left the dealer.

2.) Trip two. Dealer decides to replace DSC module. Takes 3 days to complete work. Hopefully, finally resolving the issue.

However, quick drive home from the dealer now the brakes are feeling very very soft and engaging when the pedal is almost on the floor. I am reviewing the paperwork now and see that the brake fluid was changed during stop 2 at the dealer. Not sure why this would be done while replacing the dsc module but it is probably related. The saga continues .... Errrrrrrrrrrrrrrrrrrrrrr.

same issue
 

I have the same issue/ lights. Any update? Thanks.