Fixing Your Car's Side View Mirror

A cracked, loose, or completely detached side view mirror can be a significant hazard, not to mention a legal issue in many regions. These mirrors are crucial for maintaining situational awareness while driving, allowing you to see adjacent lanes, approaching vehicles, and potential hazards. Fortunately, many side mirror issues can be addressed with a bit of DIY effort, saving you the cost of a professional repair. This article will guide you through diagnosing common problems, understanding what you should be able to see in your mirrors, and the steps involved in fixing a broken side view mirror.

Understanding Your Side View Mirrors

Before diving into repairs, it's essential to understand the purpose and proper adjustment of your side view mirrors. According to driving instructors like Simon Miyerov, the goal is to eliminate blind spots as much as possible. When properly adjusted, your side mirrors should allow you to see the very edge of your own vehicle and the surrounding area without needing to turn your head excessively. Specifically, Miyerov advises:

• Side Mirrors: Adjust them so you can just see the tips of your doorknobs. From the right mirror, you should glimpse a sliver of your car's rear bumper or the edge of your right doorknob. From the left mirror, you should see the edge of your left doorknob. This setting ensures you're seeing the area immediately to your side and slightly behind, minimizing blind spots.
• Rearview Mirror: Position this mirror to give you a clear, unobstructed view of the entire rear window and the road behind your vehicle.

Being able to see everything clearly while stationary is key. If you find yourself constantly turning your head or relying heavily on your peripheral vision, your mirrors are likely not adjusted correctly, which can be as dangerous as a damaged mirror.

Common Side View Mirror Problems and Solutions

Side view mirrors can suffer from a variety of issues:

1. Cracked or Broken Mirror Glass

This is perhaps the most common problem. A rock thrown up from another vehicle or a minor impact can easily crack the glass. If the glass is only cracked but remains in place, it's still a safety concern as it distorts your view. If the glass has fallen out entirely, you'll need to replace it.

DIY Replacement of Mirror Glass:

Many modern side view mirror assemblies allow for the replacement of just the glass (or the glass with its backing plate). This is often a more affordable option than replacing the entire housing.

1. Identify Your Mirror Type: Side mirror glass typically comes as a direct replacement unit that adheres to the existing backing plate, or as a unit that includes the backing plate and sometimes the heating element (if your car has heated mirrors).
2. Purchase the Correct Replacement: You'll need to know your car's make, model, and year. Online auto parts retailers or local auto parts stores are good places to find the correct replacement. Ensure it matches your original mirror, especially if you have features like turn signals or heating elements integrated into the mirror housing.
3. Removing the Old Glass:
   • For mirrors with just glass replacement: Carefully pry the old glass away from the backing plate. Often, there are small clips holding it in place. A plastic trim tool or a thin, flat-head screwdriver can be used, but be gentle to avoid damaging the housing. If the glass is shattered, wear protective gloves and eyewear.
   • For mirrors with backing plate: You might need to remove the entire mirror assembly from the door, or access it from inside the car by removing the interior door panel. This is a more involved process.
4. Installing the New Glass:
   • Adhesive-backed glass: Clean the backing plate thoroughly with an alcohol wipe to remove any old adhesive or debris. Peel off the backing from the new mirror's adhesive tape and carefully align it with the backing plate. Press firmly to ensure a secure bond.
   • Clip-in glass: Align the new glass with the backing plate and gently push until it clicks into place.
5. Test: Check the mirror for stability and ensure your view is clear.

2. Loose or Wobbly Mirror Assembly

Over time, the mounting points for the side view mirror assembly can loosen, causing it to vibrate or wobble, especially at higher speeds. This can be due to worn-out bolts or a damaged mounting bracket.

DIY Tightening/Repair:

1. Locate Mounting Bolts: The side mirror assembly is typically attached to the car door with a few bolts. These are often accessible from the inside of the door panel. You may need to remove a small plastic cover or a section of the interior door trim to get to them.
2. Tighten the Bolts: Use the appropriate socket or wrench to tighten the mounting bolts. Be careful not to overtighten, as this could strip the threads or crack the plastic housing.
3. Check for Damage: If tightening the bolts doesn't resolve the wobble, inspect the mounting bracket and the housing for any cracks or damage. If the housing is cracked, you might need to replace the entire mirror assembly.

3. Detached Mirror Assembly

In more severe accidents or due to prolonged vibration, the entire side mirror assembly can become detached from the door.

DIY Replacement of Entire Mirror Assembly:

This is a more complex repair and usually requires removing the interior door panel.

1. Access the Mirror Mountings: You'll need to remove the interior door panel. This typically involves unscrewing screws hidden behind trim pieces, door handles, and window control panels, and then carefully prying the panel away from the door frame. Consult your car's manual or look for online tutorials specific to your model for detailed instructions on door panel removal.
2. Disconnect Electrical Connectors: If your mirrors have features like power adjustment, heating, or turn signals, there will be electrical connectors that need to be carefully unplugged.
3. Unbolt the Old Mirror: Locate the nuts or bolts securing the mirror assembly to the door frame and remove them.
4. Install the New Mirror: Position the new mirror assembly, ensuring it aligns correctly with the mounting holes. Reinstall the bolts or nuts and tighten them securely.
5. Reconnect Electrical Connectors: Plug in the electrical connectors for the new mirror assembly.
6. Reassemble the Door Panel: Carefully reattach the interior door panel, ensuring all clips and screws are properly secured.
7. Test: Check that the mirror is stable and all electrical functions (if applicable) are working correctly.

Tools and Materials You Might Need

For most DIY side mirror repairs, you'll likely need:

Important Considerations

• Safety First: Always wear appropriate safety gear, especially gloves and eye protection, when working with broken glass or when disassembling parts of your car.
• Check Local Regulations: Ensure your side view mirrors are correctly adjusted and free from significant damage, as driving with a broken or missing mirror can result in fines.
• Heated Mirrors: If your car has heated mirrors, ensure the replacement glass includes the heating element and that you connect the electrical wires correctly.
• Power Mirrors: Similarly, if you have power-adjustable mirrors, the new assembly will need to be connected to the car's electrical system.
• When to Call a Professional: If you're uncomfortable with disassembling car parts, lack the necessary tools, or if the damage is extensive (e.g., damaged door panel or wiring), it's best to seek assistance from a qualified mechanic.

Frequently Asked Questions (FAQs)

Q: How much does it cost to replace a side view mirror?

A: The cost can vary significantly. Replacing just the mirror glass might cost anywhere from £20 to £100, depending on the vehicle and whether it has special features like heating. Replacing the entire mirror assembly can range from £50 to several hundred pounds for the part alone, plus labour costs if you have it done professionally.

Q: Can I drive with a cracked side view mirror?

A: While you might be able to see, a cracked mirror distorts your view, increasing the risk of an accident. It may also be illegal in your area. It's best to repair or replace it as soon as possible.

Q: How do I know if I need to replace the entire mirror assembly or just the glass?

A: If the glass is cracked or has fallen out, but the plastic housing and mounting seem intact and secure, you likely only need to replace the glass. If the plastic housing is cracked, the mirror is loose and cannot be tightened, or the entire unit has detached, you'll need to replace the whole assembly.

Q: Are side view mirrors universal?

A: No, side view mirrors are typically specific to the make, model, and year of your car, and sometimes even the trim level. Features like heating, auto-dimming, turn signals, and power adjustment mean that different versions exist even for the same car model.

By understanding how to properly adjust and maintain your side view mirrors, and by knowing the basic steps for repair, you can ensure your vehicle remains safe and compliant on the road. Remember, clear visibility is paramount for safe driving.