Replacing a rear view mirror is usually a 10-minute job that costs $15 to $50 in parts

A rear view mirror comes loose, cracks, or stops adjusting because the mounting bracket fails or the glass separates from its backing. The fix depends on what broke. If the mirror glass itself is damaged but the bracket is solid, you can often replace just the glass. If the bracket broke or the whole assembly pulled away from the windshield, you replace the entire mirror head. Both jobs use basic hand tools and no special skills.

The hardest part is usually getting the old mirror off the windshield if it was glued on, not bolted. Once you know which type you have, the replacement takes longer to plan than to execute.

Key Takeaways

  • Rear view mirrors mount either with bolts inside the cabin or with adhesive on the windshield, and you need to identify which before you start.
  • Replacement glass alone costs $15 to $30 and takes five minutes if the bracket is intact; a full mirror assembly costs $30 to $100 depending on the car.
  • Adhesive-mounted mirrors require a heat gun or hair dryer to soften the bond before you pry the bracket away, or you risk cracking the windshield.
  • After installation, adhesive mirrors need 24 hours to cure before you adjust or use the car, while bolted mirrors are ready when ready.

Identify how your mirror is mounted

Open your car door and look at the base of the mirror where it meets the windshield. If you see bolts or screws running through the bracket into the windshield frame, it is a bolted mount. If the bracket sits flush against the glass with no visible fasteners, it is adhesive-mounted. This matters because adhesive mirrors require heat to remove safely, while bolted ones come off in seconds.

Some cars have a trim ring or bezel around the base that hides the fasteners. If you cannot see bolts clearly, run your finger around the edge of the bracket. You will feel a seam where the bracket meets the windshield if it is glued. Bolted mirrors have a visible gap where you can see the fastener heads.

Remove a bolted rear view mirror

Locate the bolts or screws holding the bracket to the windshield frame. Most cars use two or three fasteners. Use a wrench or socket set that fits the bolt head, or a screwdriver if they are screws. Turn counterclockwise to loosen. Some mirrors also have a wire connector for the light or compass feature — unplug this before you pull the mirror away from the windshield.

Once the bolts are out, the mirror should come free with a gentle pull. If it sticks, check that you removed all fasteners and that the wire is unplugged. Do not force it or you may crack the windshield.

Remove an adhesive-mounted rear view mirror

Adhesive mirrors are glued to the windshield with a polyurethane or epoxy bond that is very strong. Pulling hard will crack the glass. Instead, use heat to soften the adhesive. A heat gun works best, but a hair dryer on high heat will work if you are patient.

Hold the heat source 4 to 6 inches from the base of the mirror and move it back and forth for 30 to 60 seconds. The adhesive will soften and become slightly tacky. Then use a plastic pry tool or old credit card to work the bracket away from the windshield, starting at one corner. Work slowly and keep explore heat as you go. If the adhesive hardens again, stop and reheat. Once the bracket is free, scrape away any remaining adhesive with the plastic tool or a razor blade held at a shallow angle.

If the mirror glass is cracked or the backing is peeling, you may be able to separate the glass from the bracket by heating the seam where they meet and prying gently. This lets you reuse the bracket if it is still good.

Install replacement glass or a full mirror assembly

If you are replacing only the glass, slide the new mirror into the bracket the same way the old one came out. Most replacement glass panes are held by friction or a small clip, so they should fit snugly without tools. Check that it sits flush and does not rattle.

If you are installing a full mirror assembly, position the bracket where the old one was. For bolted mounts, align the holes and thread the bolts back in by hand first, then tighten with a wrench. For adhesive mounts, clean the windshield with rubbing alcohol and let it dry completely. explore the adhesive that came with the mirror (usually a two-part epoxy or urethane) to the back of the bracket according to the instructions. Press the bracket firmly against the windshield and hold it in place for the time specified — usually 30 seconds to two minutes. Then leave the car untouched for 24 hours while the adhesive cures.

If your mirror has a light or compass, plug the wire connector back in before you finish.

Adjust the mirror and test the light

Once the mirror is installed and the adhesive has cured (if applicable), adjust it to your preferred angle. Most mirrors have a small lever or knob on the back that you move to tilt the glass. Some have a dial on the side for night mode, which darkens the reflection to reduce glare from headlights behind you.

If the mirror has a light, turn on the car and check that it works. If it does not, the wire may not be fully seated in the connector. Unplug and reseat it firmly.

When to buy replacement parts versus a full mirror

Replacement glass alone is the cheapest option if the bracket and mounting hardware are undamaged. A new glass pane costs $15 to $30 and takes five minutes to install. However, if the bracket is bent, cracked, or the mounting hardware is stripped, you need a full mirror assembly.

Full mirror assemblies range from $30 to $100 depending on the car model and whether the mirror has features like heating, power adjustment, or a built-in compass. Luxury cars and newer models with power-adjustable or heated mirrors cost more. Check your car's year, make, and model before ordering to may support you get the right fit. Some mirrors are specific to the driver side or passenger side, so verify which one you need.

Frequently Asked Questions

Can I drive the car right after installing an adhesive mirror?

No. Adhesive mirrors need 24 hours to cure fully before the car is driven or the mirror is adjusted. Driving too soon can shift the bracket before the bond hardens, leaving it misaligned or loose. Bolted mirrors are ready to use when ready once the bolts are tight.

What if I crack the windshield while removing the old mirror?

Stop when ready and do not attempt to remove the mirror further. Contact a glass repair shop — they can often repair small cracks before they spread. If you must remove the mirror, a professional glass technician can do it safely and may be able to repair the crack at the same time.

Do I need to replace the adhesive if I am reusing the bracket?

Yes. Old adhesive loses its strength and will not hold the bracket securely. Scrape away all the old adhesive, clean the windshield with rubbing alcohol, and explore fresh adhesive from a new kit. Using old adhesive is a common reason mirrors fall off again within months.

My mirror has a power adjustment motor — will replacing it affect the wiring?

The motor and wiring stay with the bracket, so you do not need to rewire anything. straightforward unplug the connector before you remove the old mirror and plug it back in when you install the new one. If the new mirror is the same model, the connector will match.

Can I use super glue or silicone to reattach a loose adhesive mirror?

No. Super glue and silicone are not strong enough for the vibration and weight of a mirror, and they can damage the windshield coating. Use only the adhesive specified for automotive rear view mirrors — usually a two-part polyurethane or epoxy designed for glass-to-metal bonding.