If you get a beep sound (warning chime) when the key is inserted and turned on, the problem mostly be with the SRS (air bag) system. Cleaning the Air bag connectors under the front sets might simply take care of the sound, if not the fault is severe.

This is what repair manual has to say about this....

---SRS---

Turn the ignition switch from the OFF to the RUN position and visually monitor the air bag indicator with the air bag modules or restraint system
diagnostic tools installed. The air bag indicator will light continuously for approximately six seconds and then turn off. If an air bag supplemental restraint system (SRS) fault is present, the air bag indicator will either:

• fail to light.
• remain lit continuously.
• flash.

The flashing might not occur until approximately 30 seconds after the ignition switch has been turned from the OFF to the RUN position. This is
the time required for the restraints control module (RCM) to complete the testing of the SRS. If the air bag indicator is inoperative and an SRS fault
exists, a chime will sound in a pattern of five sets of five beeps. If this occurs, the air bag indicator will need to be repaired before diagnosis can
continue.

 

The chime sound is now constant and it would not start, can some one help