When I am switching-ON my car a constant beep starts, which keeps making noise till I switch-OFF the engine. There's no alarm on the panel at all and drive is also normal.
Theres a continuous beep when switching-ON my car, remain constant while driving on 1998 Toyota Tercel
poss grd tab inside ign switch is malf call a mobile locksmith you may need a new lock cyl
2 more answers
possible shorted buzzer or chime.
Sounds like you have a warning "chime" or buzzer that is malfuntioning. Is the beep you speak of coming from under or behind the dashboard or somewhere else in your vehicle?