My civic exi prismatic. Gives vibration sound like mobile vibrating. Engine is off, car locked. It makes sound after every 5 minutes for 5 seconds approx.
I took off + battery terminal. But still the sound is coming after 5 minutes.
I'm pretty sure I didn't left any cell phone in car
Is it ECU making some alert? Does ecu have its backup battery? (As I have disconnected main battery by unplugging positive terminal.
Plz reply if someone online, I can't sleep with this mystery unsolved
Sent from my iPhone using PW Forums