: It does not require batteries; it automatically powers on once connected to the vehicle's OBD-II port. Diagnostic Capabilities :
But the oracle was silent. Its LCD screen glowed amber, but it displayed only a blinking cursor. The device was locked. The "EECR1A" was infamous for this: it demanded respect. It refused to speak to anyone who hadn’t consulted its scripture—the manual. blue point eecr1a manual
I/M readiness & emissions testing