Signals

Hello, I’m Pete from the Car Genius team at RepairPal. I’m sorry you’re dealing with this concern on your Toyota Tacoma. With the left front turn signal no working and all other signals and lights working properly, this can be caused by a fault with the turn signal bulb itself, a wiring concern leading to the bulb, or in some cases a fault with the ECU/control that sends out the signals to the turn signal assembly itself. I recommend to start with having the bulb itself checked as well as the wiring and connections leading to the bulb for any issues. If no concerns are found and in order to identify if this is an ECU/control unit at fault from there further electrical testing will need to be performed to identify the cause. The electrical testing needed usually involves the use of wiring diagrams and electrical test equipment which most shops/repair facilities will have to perform the testing if needed. If you’d like to find a trusted, certified repair shop in your area, you can check here: https://repairpal.com/certified. If you need more advice, or have any further questions about your vehicle, we’re here to help. Just give us a call at 877-913-1554 where we will be happy to assist!