Think of found it:
Originally Posted by air_cooled
Not the cruise control cable. That cable comes from your ASC actuator.
You will note you now have a yellow triangle with ! when you start the car. This is because the actuator has no "feedback/tension" on startup self test. Hard to tell from your picture but there should be a threaded plastic sleeve that passes through the notched holed bracket.
If you cannot reconnect then secure cable away from fan. Car is safe to drive you just have no traction control.
E34 530i SECONDARY THROTTLE HOUSING TUBE ASC
Bowden cable Ads 2
part no. 17 - PN 35411163163
1997 E39 528i arctic silver on black 5sp
RIP 1994 E34 530i oxford green on tan 5sp
The Flatbed bringeth... the Flatbed taketh away