I have never used my cruise control, you obviously do alot of country driving.
But yeh if you have a CEL error, the cruise control light will constantly flash and you can't use cruise control.

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[COLOR="Red"]I have the right foot of Subaru death![/COLOR]

[SIGPIC][/SIGPIC]
365hp and 515nm

New Beast to arrive April 2015 - 365hp, 450nm, 0-100 in 4.4sec. AMG Goodness!