Turn signals have 4 modes right turn or left turn - moving switch "fully-up" or "fully-down" locks it into a "right" or "left" mode until cancelled right lane change or left lane change - moving the switch "partially-up" or "partially-down" against a detent signals a lane change to the "right" or "left" that is immediately cancelled upon release conditions exist where the left lane change mode does not activate. This was reported and the conditions to duplicate the situation were demonstrated. The dealer agreed that the switch should not behave in the manner demonstrated and attempted to repair the issue by replacing the switch. On delivery, the turn signal still malfunctioned under the same conditions. The vehicle was again taken to the same dealer a second time. The dealer researched the issue by recreating the conditions on other vehicles on the lot and determined that the condition is intrinsic to the design of the switch and relates a design fault in the switch and not a bad part. One generally activates the signal with ones hands still on the steering wheel. Therefore, pushing down to activate the left lane change mode, as applied with the index or middle finger, creates both a "downward" and "forward" force on the stalk due to the angle of application. When applied, that is a "downward" force to activate the left lane change signal mode along with a "forward" force as one would expect based on the angle of application, the left lane change signal mode fails the operate because the contact in the turn signal switch lifts off its mating contact and opens the circuit. I have gone through the motions to activate the left lane change signal mode, thinking that it had activated, only to find that the signal did not operate as it should have. This poses a safety hazard as other motorists are not alerted to my intentions and may not compensate for my intended lane change and also subjects me to a violation of my state vehicle code.

- Fullerton, CA, USA