Change of profile in LG RD2030 model mobile handset

Hi,
I am having one CDMA handset of LG RD2030 model. I am using this handset from last three years without any trouble.
Some how, any button got pressed and profile of the handset got converted from GENERAL to CAR, resulting which I cannot use my handset without handsfree.
Looking for a valuable suggestion to convert the mode/profile, back to GENERAL