What causes the malfunction indicator light and skid light to illuminate simultaneously in the Highlander?
2 Answers
The simultaneous illumination of the malfunction indicator light and skid light in the Highlander indicates a fault in system components, sensors, wiring, control units, or other related parts. Troubleshooting steps: Given the wide range of potential issues, it is necessary to use an OBD-II scanner to retrieve specific trouble codes. These codes help narrow down the fault scope, identify the root cause and location, and facilitate targeted repairs. It is recommended to visit an authorized 4S dealership for professional assistance. Reasons for skid light activation: The vehicle's skid prevention system, also known as the Electronic Stability Program (ESP), may trigger the skid light (ESP-OFF) due to: accidental pressing of the ESP deactivation button, loose sensor connectors, software issues causing signal transmission failures, or ABS pump malfunctions.
I've been driving a Highlander for over ten years and have encountered several instances where both the malfunction indicator light and the skid control light came on simultaneously. This is usually a sensor issue, such as a faulty wheel speed sensor affecting the skid control system's operation, which in turn triggers the engine malfunction light. It could also be caused by something loose in the chassis, like uneven tire wear or a stuck brake disc, both of which can lead to both lights warning together. I think it's important not to take it lightly. First, pull over to check the tire pressure and battery connections, and try a simple engine restart to see if the lights go away. If not, head straight to the dealership to read the error codes with a diagnostic tool. Over time, aging electronic control systems can cause more trouble, so during regular maintenance, remember to have the technician check the sensors' seals to keep them dry and prevent corrosion.
