Where is the Reverse Gear Switch Located in a Car?
2 Answers
The reverse gear switch in a car is located on the transmission housing. For automatic transmissions, there is no separate reverse gear switch; it is integrated into the gear position sensor on the shift shaft. The functions of the car's reverse gear are: 1. Engaging the reverse gear allows the car to move backward, facilitating quick turns and U-turns; 2. Disengaging the reverse gear prevents the car from moving backward; 3. Activating the reverse gear switch turns on the reverse lights and activates the reverse radar. The working principle of the reverse light switch: When the reverse gear is engaged, the mechanical mechanism presses down on the switch contacts, closing the circuit, which turns on the reverse lights and triggers the reverse gear alert sound. When the reverse gear is disengaged, the switch contacts spring back, opening the reverse light circuit again.
Last week my car's reverse light wasn't working, so I took it to the repair shop where the mechanic showed me its location. The reverse light switch is mostly installed on the side or top of the transmission, and you need to lift the car to see it. I peeked under the car—it's just a small block with a wire connector, and in some cars, it's located behind the engine compartment. When replacing the switch, the mechanic said not to yank the wires forcefully and to disconnect the negative terminal of the battery first. If this thing breaks, not only will the reverse light not work, but the reverse radar and camera might also fail. Nowadays, some new cars integrate this switch with the gear position sensor, making its location even more hidden. If you're thinking of replacing it yourself, it's best to check the vehicle's manual first.
