Thread
here on fitting cruise control to a European 500
well! I'm speechless!
Thank you, that has changed my life as I wonder how on earth it works - for that steep price, it must be a little computer/CAN node in its own right, running a program in a PID control loop, it must pick up speed/brake signals from the CAN bus and send 'engine torque request' signals to the CAN bus... that would be highly dangerous if it didn't work properly!
I'm sure prices will come down, as such a device must be fairly universal for all CAN-equipped cars if the CAN messages are standardised.
The only other possibility is that it is interfaced with the engine management in the same way as my 156 cruise control - in which case, it would be a bunch of switches worth £10 - and there wouldn't be those two stored preset speeds unless the engine ECU includes that feature (which seems unlikely).
I bet it's nearly as fun with Dualogic as mine is with Selespeed; hit Resume at 40km/h and mine will accelerate in 2nd, change to 3rd, then 4th, then while still accelerating at 80km/h, impatiently it changes back down to 3rd again, then 4th, then 5th.
Many thanks again for the link.
See also
http://www.carfi.co.uk/html/cruise_control.html?gclid=CI3Z2ti4vq8CFYYepAodOj8xww which I believe confirms it is a CAN node.
My guess is that the US version uses Blue&Me software to receive/send the CAN commands, operating in a multitasking way; cruise control could then be a free download for everyone else...? I won't hold my breath for FIAT to offer that!
-Alex