How To Fix Broken Side Mirror Car

How To Fix A Broken Side Mirror on a Car

A broken side mirror on a car is a common occurrence. Whether it's the result of a minor collision, vandalism, or simply wear and tear, a damaged side mirror can significantly compromise driving safety. Operating a vehicle with a broken side mirror is often illegal and increases the risk of accidents. Fortunately, in many cases, replacing or repairing a broken side mirror is a task that can be accomplished by the vehicle owner, saving on potentially costly professional repair fees. This article provides a comprehensive guide on how to fix a broken side mirror on a car.

Before commencing any repair work, it is essential to assess the extent of the damage. The damage may range from a cracked mirror glass to a completely detached mirror housing. The necessary tools and repair approach will depend on the assessment. A crucial preliminary step involves ensuring personal safety. Wearing safety glasses and work gloves is recommended to protect against sharp glass fragments and potential hazards. Gathering all necessary tools and materials beforehand streamlines the repair process and minimizes delays.

Assessing the Damage and Gathering Necessary Tools

The initial step involves a thorough examination of the damaged side mirror. Determine whether the damage is limited to the mirror glass itself, or if the housing, mounting brackets, and internal mechanisms are also affected. If only the mirror glass is cracked or broken, replacing the glass alone is a viable option. However, if the housing is severely damaged or detached, a complete side mirror assembly replacement is usually necessary. Check the wiring for any electric functions, such as heated mirrors or turn signals, to assess if further repair or parts will be needed.

Once the extent of the damage is determined, assemble the required tools and materials. This may include:

New side mirror assembly or replacement mirror glass
Screwdrivers (Phillips head and flathead, various sizes)
Socket set with appropriate socket sizes for mounting bolts
Pliers
Putty knife or plastic trim removal tool
Safety glasses
Work gloves
Cleaning supplies (glass cleaner, microfiber cloth)
Heat gun or hair dryer (useful for loosening adhesive)
Adhesive (automotive-grade mirror adhesive or double-sided tape)
Wire stripper and crimping tool (if electrical wiring is involved)
New wire connectors (if electrical wiring is involved)

Having all the necessary tools readily available will contribute to a smoother and more efficient repair process. Consider consulting the vehicle's repair manual for specific instructions and torque specifications relevant to the make and model.

Replacing the Mirror Glass Only

If the side mirror housing is intact and only the glass needs replacement, follow these steps:

Removing the Old Mirror Glass: This is arguably the most delicate part of the replacement. Carefully pry the old mirror glass from the housing. A putty knife or plastic trim removal tool can be used to gently separate the mirror from the adhesive backing. Apply steady, even pressure to avoid cracking or shattering the remaining glass further. If the mirror is heated, disconnect the heating element wires by carefully pulling them off the terminals on the back of the mirror.
Cleaning the Housing: Once the old mirror glass is removed, thoroughly clean the inside of the mirror housing. Remove any remaining adhesive residue, dirt, or debris. Use a glass cleaner and a microfiber cloth to ensure a clean surface for the new mirror to adhere to. A clean surface is crucial for proper adhesion and to prevent future issues.
Installing the New Mirror Glass: Apply automotive-grade mirror adhesive or double-sided tape to the back of the new mirror glass. Ensure that the adhesive is evenly distributed to provide a secure bond. Carefully align the new mirror glass with the housing and press it firmly into place. Hold it in position for the recommended time specified by the adhesive manufacturer to allow the adhesive to set properly. If the mirror is heated, reconnect the heating element wires to the terminals on the back of the mirror.
Securing the Mirror: Use tape to secure the mirror in place for a few hours, or overnight, to ensure it will adhere and set properly. This is particularly important with larger mirrors or in areas with high vibration.

Replacing the Entire Side Mirror Assembly

When the mirror housing is damaged or detached, replacing the entire side mirror assembly is generally the most effective solution. This process typically involves the following steps:

Removing the Interior Door Panel: Accessing the mounting bolts for the side mirror assembly usually requires removing the interior door panel. Use a screwdriver or plastic trim removal tool to carefully detach the panel. Start by removing any screws or clips that secure the panel to the door. Work your way around the panel, gently prying it away from the door. Disconnect any electrical connectors for power windows, door locks, or speakers before completely removing the panel.
Disconnecting the Electrical Connections: Locate the electrical connector for the side mirror assembly and disconnect it. This connector may be located behind the door panel or inside the door cavity. If the vehicle is equipped with power mirrors, turn signals, or heated mirrors, ensure that all electrical connections are properly disconnected before proceeding.
Removing the Old Side Mirror Assembly: Locate the mounting bolts that secure the side mirror assembly to the door. These bolts are typically accessible from inside the door. Use a socket wrench with the appropriate socket size to loosen and remove the bolts. Support the side mirror assembly as you remove the last bolt to prevent it from falling and causing damage.
Installing the New Side Mirror Assembly: Align the new side mirror assembly with the mounting holes on the door. Reinstall the mounting bolts and tighten them to the manufacturer's specified torque. Ensure that the side mirror assembly is securely attached to the door. Connect the electrical connector for the new side mirror assembly.
Reinstalling the Interior Door Panel: Reconnect any electrical connectors for power windows, door locks, or speakers. Align the interior door panel with the door and press it firmly into place. Reinstall any screws or clips that secure the panel to the door. Ensure that the door panel is securely attached and that all electrical functions are working properly.

For vehicles equipped with advanced features such as blind spot monitoring or power folding mirrors, the replacement process may be more complex. Consult the vehicle's repair manual or a qualified mechanic for specific instructions.

After completing the repair, thoroughly inspect the side mirror to ensure that it is properly aligned and functioning correctly. Adjust the mirror to provide a clear view of the surrounding area. Test any electrical functions, such as power adjustments, turn signals, and heated mirrors, to verify that they are working properly. A post-repair inspection can identify any potential issues and prevent future problems.

If encountering difficulties or feeling uncomfortable performing the repair, seeking assistance from a qualified mechanic is always recommended. It is important to use the correct size screws and bolts, and ensure all of the parts replaced are rated for automotive use. Proper maintenance, including regular cleaning and inspection of the side mirrors, can help prevent future damage and ensure continued safe operation of the vehicle.