Originally Posted by
Oldstrain
Please don’t hurt me for even asking this. I just acquired a 2007 Roadster Limited with 17k miles. It has the typical rogue, erratic, demon-possessed rear spoiler, which goes up nicely at 62 but won’t retract automatically or otherwise unless car is put thru another ignition cycle.
I have replaced the BCM, performed every known test on a brand new battery, cleaned ground contacts, and added an engine ground. There are no other glitches in the car - everything else is working correctly.
I admit I have not read every post on this, but I have read a lot of them and I don’t believe I ever saw a “final solution” to the problem outside of battery. Issues. Could someone save me some effort and advise how the spoiler issue finally washed out?
Have you tried an OBD scanner on your car. You might have a bad speed sensor.
If you don't have a scanner you can take it to Autozone or some other big store and they will scan your car for free.
If it doesn't scan as a Crossfire, enter it as a Mercedes-Benz SLK 320.
Let us know what you find out.
BTW, don't be afraid to ask any questions here.