Fixing a car mirror depends entirely on the type of damage. For a loose interior mirror, you can often tighten the set screw at the base. If the mirror housing is broken but the mount is secure, you'll likely need to replace the entire assembly. For an exterior side mirror that's been knocked off, the repair involves checking the wiring for power features and reattaching it to the door bracket, which may require a new mounting plate.
The most common issue is a loose interior mirror. Locate the small set screw where the mirror arm meets the windshield mount. Using the correct size Allen wrench or screwdriver, turn it clockwise to tighten. If the mirror is dangling by its electrical cord for an auto-dimming or compass feature, the mount may be broken. These are typically attached to the windshield with a special adhesive, and a professional replacement is the safest option.
For exterior mirrors, the process is more involved. If the mirror is physically broken but the housing and motor are intact, you can often buy just the glass piece, which clips into place. If the entire assembly is damaged, you'll need to replace it. Modern mirrors with blind-spot monitoring or heating elements require careful handling of the electrical connector.
| Repair Type | Typical Cost (Parts Only) | DIY Difficulty | Professional Cost (Parts & Labor) | Common Cause |
|---|
| Tighten Interior Set Screw | $0 | Easy | N/A | Normal vibration |
| Replace Interior Mirror Glass | $15 - $40 | Easy | $75 - $150 | Impact damage |
| Replace Interior Mirror Assembly | $50 - $200 | Moderate | $150 - $300 | Broken mount |
| Replace Exterior Mirror Glass | $25 - $100 | Easy/Moderate | $100 - $250 | Impact, vandalism |
| Replace Exterior Mirror Assembly | $150 - $600+ | Moderate/Difficult | $300 - $800+ | Collision |
| Re-attach Exterior Mirror | $0 - $50 (for bracket) | Moderate | $100 - $200 | Minor impact |
Before starting, check your car's manual for specific instructions. For exterior mirrors, disconnect the car battery to avoid short circuits. If the repair involves the windshield mount or complex wiring, consulting a professional is the most reliable and safest choice.
