BMW Repair: warning symbols, dynamic stability control, 2006 bmw 325i

Question
Hi
I have a 2006 BMW 325I, when driving in the mountains, i was
on a very long downhill section when a number of warning
lights came on with a warning tone.
Dynamic Stability Control DSC
Flat Tire Monitor failed
and the Brake warning symbol

at the same time the speedometer fluctuated and droped to zero
for a second and returned to normal. When i pulled over, i
turned the engine off and back on again and all the warnings
went away. i drove it for another couple hundred of miles
until at the same point on a long downhill section of road it
did it again. Can you help?

Answer
(Sorry...hit wrong button)

I'd check it out with a BMW dealer, but I think what you have may not be bad.

All of these things are related to a signal coming from sensors on your rear wheels...likely only one side.  Could be a loose connector with all the signals, or something like a bad wheel speed (ABS) sensor.  (The ABS sensor would explain everything except the flat tire monitor, and I don't know how those are wired.)

Get it checked out.  Shouldn't be expensive.