Knock Sensor Toyota 4 Runner . If this video was helpful to you and if you would like to place a donation, here is my Venmo and PayPal information. Your knock sensor is located under the air intake manifold. Knock Detonation Sensor Fits Toyota 4Runner Lexus SC300 ... (Lillie Hawkins) Wondering if it could be knock sensor and what is the function of a knock sensor. The engine light (knock sensor) comes on when I rev the car quickly in park. All genuine Toyota Knock Sensor from us are shipped directly from authorized Toyota Dealer. Find great deals on eBay for toyota knock sensor. I asked a friend at a Toyota service dept. about it, and he says they have a special tool for the bolt. Set of 2 Knock Sensors for 4 Runner Toyota Camry Tacoma ... 1990 Toyota 4runner knock sensor Knock Sensor For Toyota Lexus Tacoma 4Runner SC400 LS400 ...