Remote control mirrors are a convenience in modern vehicles, allowing drivers to adjust their side mirrors with the touch of a button. However, like any electrical component, they can malfunction. Understanding how to diagnose and repair a remote control mirror can save you time and money. This guide provides a step-by-step approach to troubleshooting and fixing common issues with your auto’s remote control mirrors.
One common issue is a failure in the power supply to the mirror motor. This could stem from a blown fuse, a wiring problem, or a faulty defroster control unit, especially if your mirrors are heated. Units like the ThermaSync 2712-HRVM are designed to power heated mirrors and include features like automatic shut-off and remote switches, indicating the complexity of these systems.
To begin the repair, check the fuse box for any blown fuses related to power mirrors. Consult your vehicle’s owner manual for the fuse box location and diagram. If a fuse is blown, replace it and test the mirror. If the fuse blows again, there’s likely a short circuit in the wiring or a faulty motor.
Next, inspect the wiring leading to the mirror. Look for any signs of damage, such as cuts, frays, or corrosion. Pay close attention to the wiring harness where it enters the door, as this area is subject to flexing and wear. Use a multimeter to check for continuity in the wires and ensure power is reaching the mirror motor when the control switch is activated.
If the wiring is intact and power is reaching the mirror, the motor itself might be faulty. Accessing the mirror motor usually requires removing the interior door panel and potentially the mirror glass. Once accessible, you can test the motor directly with a 12V power source to see if it operates. If the motor is unresponsive, it will need to be replaced.
In some cases, the issue might not be the mirror itself, but the control switch. If neither mirror is working, the switch is a prime suspect. Less frequently, but still possible, a defroster control module, if present and integrated with mirror functions, could be the source of the problem. Modules like the ThermaSync series often include relays and timing circuits, which can fail over time.
Repairing a remote control mirror can range from a simple fuse replacement to more complex component swaps. By systematically checking the power supply, wiring, motor, and switch, you can effectively diagnose and address most common issues, restoring the functionality of your auto’s remote control mirrors. Remember to consult your vehicle’s repair manual for specific instructions and safety precautions.
