Do you need to replace your rearview mirror? Although it might seem like a straightforward task, you need to ensure that you have the correct mirror type and that you are careful during installation not to damage the glass. Let’s start by discussing replacement.
Replacement varies depending on the type of mirror and how it is attached. In modern cars that use advanced driver assistance systems (ADAS) in the mirror, replacement must be performed by a professional. These systems are delicate and if the mirror is replaced, ADAS calibration is necessary. If your vehicle doesn’t have any of these systems, keep reading to learn how to replace your rearview mirror glass from Glass Doctor.
Watch this Video on How to Replace a Rearview Mirror
You can find a generic replacement mirror at your local auto parts store, but these kits vary significantly, and may or may not include replacement supplies. As such if needed, also purchase a rearview mirror replacement kit – which usually includes the adhesive, cleaning supplies, and hardware.
Source a Replacement Mirror
Usually, you cannot replace just the mirror glass; you must replace the entire unit. If your mirror uses auto-dimming glass or electrochromic technology, look for an OEE replacement mirror from your local car dealer. If your vehicle doesn’t use this technology, many generic rearview mirrors are compatible with different makes and models.
Check Compatibility
Carefully open the packaging as you might need to return the mirror. Take out the mirror and check to see whether it will fit at the needed angle on your windshield by placing it near your old mirror. Also check to ensure that you can adjust for proper visibility.
Remove Old Mirror
Apply a small piece of masking tape on the exterior of the glass to mark the original mounting location.
Unplug the wiring harness if the mirror uses one for an electronic compass or dimming feature.
Remove the mirror from the glass-mounted hardware – look for a screw to remove or a clip to slide it off.
Install the new mirror, attach any wires, and tighten mounting hardware.
If you need to install new mirror mounting hardware to the glass
Use a heat gun or blow dryer to soften the adhesive that holds the mounting hardware to the glass.
Apply heat to the interior of the windshield where the mirror hardware is mounted and gently wiggle the mount free. You may need a helper to heat the glass while you remove the hardware. Note: Too much heat will break the windshield, so exercise caution.
You may need to use a thin piece of piano wire or fishing line to break the bond between the glass and the mirror mount. Work the wire/line between the glass and the mirror mount using a flossing motion to break it free. Only apply force parallel to the glass, don’t try and tear the hardware off or it might bring a piece of glass with it.
Prep Surface
Remove old adhesive with a single edge razor blade using care to not scratch the glass. Wipe the surface clean with a rag and glass cleaner and allow it to dry before proceeding. If your windshield replacement kit came with any cleaning or prep wipes, use them now.
Install the Mirror
Not all kits are the same; follow the manufacturer's instructions closely.
If the kit comes with an activator, apply it to the windshield and the mounting hardware. Allow the activator to dry for a few minutes if needed.
Apply the glue to the mirror mounting hardware, not the windshield itself. Use the tape you placed on the exterior of the windshield to find the original mounting location and install the mirror mount. Refer to the manufacturer's instructions for glue cure times.
Once the glue is fully cured, install your new rearview mirror
Why You Shouldn’t Drive if Your Rearview Mirror Falls Off
Driving without a rearview mirror not only presents a plethora of possible safety hazards, but it’s also illegal in many jurisdictions.
Potential consequences include:
Limited visibility: The rearview mirror provides crucial visibility of vehicles approaching from behind. Without it, your decision-making can become impaired as you may attempt to switch lanes or quickly stop without a proper assessment of the traffic behind you.
Compromised safety in reversing: While a rearview mirror primarily assists with monitoring traffic behind you while driving forward, it's also essential for reversing safely. Your ability to see obstacles behind you is severely diminished without it, exacerbating the risk of backing into another vehicle or pedestrian.
Reduced Awareness: You’ll likely need to turn your head away from the road in front of you to evaluate the scene behind you without a rearview mirror. This diverts your attention away from potential hazards that can increase the likelihood of a collision.
Legal requirement: In many areas, driving without a rearview mirror is illegal and could result in fines or penalties if caught by law enforcement. For example, in California, you can receive a fine, with more penalties potentially added on by the specific city or county.
What Can Cause A Rearview Mirror to Fall Off
There are a variety of factors that can compromise your rearview mirror’s integrity. Sometimes it may be the result of general wear and tear, but you’ll have more control over other possibilities, such as impact or excessive weight.
Let’s take a look at some of the more common reasons that rearview mirrors break down:
Adhesive failure: The rearview mirror is typically attached to the windshield using a special adhesive. Over time, this glue can weaken due to temperature changes, exposure to sunlight, or aging, causing the mirror to detach.
Age and wear: The materials of the rearview assembly, such as the mounting bracket or mirror housing, can naturally degrade with time, reducing their ability to maintain a secure attachment to the windshield.
Excessive weight: Hanging heavy objects from the mirror, such as air fresheners, parking permits, or decorations, can strain the attachment point, eventually causing it to fall off.
Corrosion: Decomposition of the metal components within the mirror assembly can weaken the integrity of the attachment, resulting in the mirror breaking. This is more likely to occur if your interior is exposed to moisture or contaminants.
Impact: A sudden impact, such as a collision, hitting a pothole, or even slamming the car door, can cause the rearview mirror to become dislodged. These possibilities can be mitigated by practicing safe driving and being gentle with your vehicle in general.
How Much Does It Cost to Replace A Rearview Mirror
The price to replace your rearview mirror will depend on the make and model of the vehicle, the type of mirror, and whether you’re replacing just the glass or the entire assembly.
Generally, for a standard passenger automobile, a glass replacement will range from $10 to $50, while the complete assembly will set you back anywhere between $50 and $200.
At Glass Doctor, we can’t guarantee a price for your rearview mirror replacement without first examining your requirements in person, but we can guarantee this: once our service professionals provide you with a final estimate, that’s the price that you’ll pay. There are no hidden fees or surprise charges.
Let Glass Doctor Help with Auto Glass Services
Glass Doctor can help replace your rearview mirror and much more. Our service professionals provide auto glass services including windshield replacement and repair and ADAS calibration.
Schedule a glass repair or replacement today.
