Power folding side mirrors typically fail at the small motor or gears inside the mirror housing. Curb strikes are the most common trigger - the gears strip when the mirror is forced. Here is the ranked diagnosis.
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After a curb hit, garage scrape, or forcing the mirror by hand, plastic gears inside the folding mechanism strip. Motor runs but mirror does not fold or folds at random. Replace the gear set or the entire mirror. Cost: $60 - $300. DIY: Medium. Severity: Low.
Get a Free AI Diagnosis →The small motor inside the mirror burns out. You hear nothing when pressing the fold button. Replace the motor or the complete mirror assembly. Cost: $150 - $500. DIY: Medium. Severity: Low.
Get a Free AI Diagnosis →The switch that triggers folding fails. Mirror lock auto-fold (when locking the car) may still work even if the dash switch does not. Swap-test by trying both ways. Cost: $30 - $200. DIY: Easy. Severity: Low.
Get a Free AI Diagnosis →Many cars have a menu setting that turns auto-fold on or off. Family member changes it without telling you. Check the settings menu before assuming hardware failure. Cost: $0. DIY: Easy. Severity: Low.
Get a Free AI Diagnosis →After a battery disconnect or mirror replacement, the motor forgets endpoints. Manually fold and unfold the mirror by hand once or twice to recalibrate (works on most Toyotas, Hondas, Hyundais). Cost: $0. DIY: Easy. Severity: Low.
Get a Free AI Diagnosis →Work through these in order. Stop as soon as you find the cause - you usually do not need all four.
In the infotainment or settings menu, look for "mirror fold on lock" or "auto fold." Make sure it is enabled. This is the free fix that solves about 15% of cases.
Push the mirror gently inward by hand. It should pivot without crunching. If it crunches or feels gritty, the internal gears are stripped. If it pivots smoothly, the issue is electrical (motor, switch, or wiring).
Press the fold switch with your ear against the mirror housing. A faint motor whir = motor runs but gears are bad. Silence = no power reaching the motor (switch, fuse, or wiring).
If only one direction (in or out) fails, the switch contact for that direction is bad. Replace the switch or, on some cars, swap the dash button assembly. Cheap, easy fix.
If your scanner shows one of these B-codes (body) along with the symptom, run a free AI diagnosis to confirm.
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The plastic folding gears stripped. The motor still runs but cannot turn the mechanism. Replace the gear set ($30-$80) or the entire mirror assembly ($150-$500).
$60 - $700 depending on whether you need just the gear set, the motor, or the full mirror. Aftermarket complete mirrors are usually the cheapest option.
Yes on most cars - it is designed to fold by hand if pushed. If yours crunches when you try, the gears are already stripped.
Partial gear strip - the teeth on one direction of rotation are gone. Mirror folds (works) one way but cannot unfold the other.
On most modern cars yes - check the settings menu under "doors" or "convenience." Some require the dealer to enable with a scanner.
No - and you can crack the housing. Pull the door panel and inspect the gears or replace the mirror.