In older models (1998 and earlier), a single unit, the turn signal and hazard flasher, is fitted on the
Fuse panel/junction block beneath the left end of the instrument panel; on newer models (1999 and later), the ETACS-ECU and a small electronic module are built into the switch. Once the flasher unit is operating correctly one can hear an audible click during the operation, but when the turn signals fail on one side and the flasher unit does not click, or when a bulb on one side is flashing at an unusually fast rate, but the one on the opposite side is not turning on, a faulty turn signal bulb may be shown. When both turn signals do not blink, then the problem could be a blown fuse, faulty flasher unit, faulty switch or loose or open connection and a quick inspection of the fuse box should be made to determine whether turn signal fuse is blown and then inspect the wiring of the turn signal to determine whether this is short or not. In the models before 1998 the flasher is on the interior fuse block and may be changed by unplugging it and replacing it with another of the same type, making sure the new one is the same. However, with 1999 and subsequent models, one must be diagnosed and replaced by a dealer service department or a qualified technician with the required tools.