Originally Posted by JDMJim
I was having cruise control issues yesterday. it wouldn't lock onto a speed. worked fine later in the day, so idk. But I have been having this intermittent problem
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Sounds silly, but you might try double checking your brake lights. The way most vehicles detect when to shut off the cruise during braking is via the brake light circuit. If the cruise detects any anomaly during its self test during initialization it won't activate for fear it won't de-activate when neccessary. A bad or loose bulb or contact will shut down the cruise before it even starts. And can drive you nuts trying to sort out if it is intermittent.