Toyota Highlander ECU computer overhaul

A new Toyota Highlander owners found us, the owner of the reaction to this remote control car theft often malfunction, and sometimes can be controlled, and sometimes can not control. Provided by the owner under the circumstances, we in the progressive approach to troubleshooting steps. First, check the remote control for a moment, after the preliminary judgment is running low on the remote control, replace the remote control battery failure remains.
Is still intermittent can not control. Description fault is not on the remote control, so we are in the car on the circuit was examined and found in the remote control button is pressed, I heard the central locking relay any action, but the central locking of the car does not have any response. According to this failure phenomenon. We can determine the central locking computer broke down, which led to the car's central locking does not work. After the fault location is found, we disassemble the bottom of the steering wheel in the driver's position under the body ECU computer, central locking computer and ECU computer is doing at a computer board. We open the computer board, the computer found a few relays. After several tests, and found a computer control central locking relay. Although the relay action, but the control is still no response. In order to accurately determine the fault location. We also checked the car's central locking computer graphics. And along the central locking harness to look for, and finally determined to be caused by the failure of this relay.
Because do not have this new relay replacement, so we try to repair the central locking relay open. Electric iron heating, and dug up a notch in appearance on the relay. Visually, has seen internal central locking relay contacts have been ablated, leading to the relay is closed and can not turn on the computer control central locking closure. We use the tool to clean the contacts being ablated, troubleshooting a. Central locking resume normal
Due to the current moment the car passed by a large central locking relay, leading central locking relay contacts instantly ablation, poor contact. Even a long time can not be turned on after the door is closed and not open properly caused. More car repair information, please look at our ECU blog.
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