Originally Posted by
CurtCrossfire
The bas light comes on and off every so often but hasn’t come on for a month now,
This sounds like a bad wheel speed sensor to me.
the spoiler is stuck up and the car beeps when going over 90mph
There is no beep with the wing UP, only when it is DOWN and you go that fast. This tells me that your car's BCM does not know what position the wing is in.
This would lead me to want to verify the function of the wing travel limit switches, particularly the upper limit switch.
You can verify what the switches are telling the BCM at BCM connector C4, pin 28 (upper limit) and pin 29 (lower limit). At all times, one pin should be low (under .2volts) and one should be high (I'd need to check, "high" is either over 5 or over 10 volts). If the limit switches read correctly, I'd suspect the BCM itself.
But I also know that a bad wheel speed sensor will cause the wing act nutty - mostly, the way it manifests, is if you put it down, it pops right back up.
If you use the switch and it wont go down, does it then beep? If so, the BCM is telling you it cant perform the action - usually due to a wheel speed sensor's bad or missing data, but it can also be that the trunk 'closed" sensor is not indicating closed or the (Roadsters only) top controller thinks the top is not fully up or fully down.