Quick cheap fix. Give it a good wipe clean and then a wipe over with a little Vaseline on a piece of rag. when you turn off the radio just give antenna a little help down with a light but firm pressure on the top of the antenna.. Always works for me(2001 Camry Conquest V6) If you need to replace it, all that is required is to buy a new antenna rod section, undo the slotted nut at the base, turn on the radio and pull on the antenna as it extends and completely withdraw it (leave ignition key in ACC position) & note orientation of toothed section. To refit place the new section into the main unit with toothed section properly located,teeth facing to rear of vehicle, and insert to a depth of approx 400mm. Wind the cable to retract the rod by turning the ignition to LOCK. If the antenna doesn't retract twist it slightly and try again. If the antenna doesn't retract fully , install the locknut and recheck operation.. Finally check reception is OK... Note: I haven't ever had to resort to a refit as my first suggestion has always worked. The reifitting procedure is from a Camry Toyota Worhshop Manual. BOL