Your mirrors fold on one side and not the other, or they stop halfway like they have forgotten where home is. That is usually a lost position reference, not a dead motor, and you can often fix it in your driveway. After reading this you will be able to re-teach the mirrors their folded and unfolded positions, spot the difference between a calibration fault and a mechanical one, and know when to stop fiddling and book a technician. Give it 15-30 minutes, most of which is spent waiting between attempts.
One thing up front: folding mirror motors run on your car's 12V system, so this is owner-level work. Nothing here involves the high-voltage traction battery, and you should not go poking at that regardless of what a forum tells you.
What you need before you start
- Your car's key fob, plus the spare if you have one (a dying fob battery causes weird body-control behaviour)
- The owner's manual, paper or PDF. Mirror reset procedures are model-specific and the manual is the only trustworthy source for yours
- A dry, level parking spot with room for both mirrors to swing fully
- 10-15 minutes of patience, and a second 10-15 minutes if the first attempt fails
- A phone to photograph the mirror's resting position, genuinely useful for spotting a bent bracket later
- No account, no app and no special tool required for the basic reset
Step 1: Rule out the boring causes first
Before you reset anything, check the obvious. A mirror that will not fold is often a mirror that has been knocked, iced up, or is fighting a fold-on-lock setting you forgot was on.
Press the fold button on the door switch pack and watch both mirrors. If one moves and the other is silent, you have an asymmetry to diagnose. If both are silent, suspect a fuse, a switch or a setting before you suspect calibration.
Check the fold-on-lock option in your settings menu if your car has one. Some cars fold mirrors when you lock and that can mask a switch fault. Also clear any ice or grit from the hinge gap with your hand, not a screwdriver. A mirror that is physically jammed will not calibrate no matter how many times you cycle it.
Tip: if only one mirror misbehaves, swap nothing yet. Note which side it is and whether it fails going out, going in, or both. That detail narrows the fault fast.
Step 2: Find your model's reset procedure in the manual
There is no universal reset sequence. Some cars re-learn positions automatically after a few full fold and unfold cycles. Others need a specific button hold, a menu option, or a body-control module relearn done with a scan tool.
Open the manual index and look under "mirrors", "door mirrors", "folding mirrors" or "comfort features". Write down the exact steps on paper so you are not thumbing through pages with the ignition on.
If your manual does not mention a reset, that is information too. It usually means the car expects the mirrors to self-calibrate, or that the procedure is dealer-level.
Tip: if you drive an EV, the body-control behaviour can differ between model years even on the same nameplate. Our EV model directory is a quick way to confirm exactly which generation you own before you follow a procedure you found online.
Step 3: Put the car in the right state
Most reset procedures want a specific power state. Typically that means ignition on with the engine off, or the car in accessory mode, and the doors closed.
Get the car into that state, then leave it alone. Do not open doors mid-procedure. Many body-control modules abort a mirror relearn if a door switch changes state, and you will chase your tail wondering why it will not take.
Tip: on push-button cars, accessory mode is usually ignition on without pressing the brake. Confirm in your manual rather than guessing.
Step 4: Run a full fold and unfold cycle
This is the core of most resets. With the car powered as above, press the mirror fold button and let the mirrors travel all the way in. Wait two or three seconds after they stop. Then press again and let them travel all the way out, and wait again.
Do this three to five times, slowly. The pause at each end is the part people skip: the module needs to see the mirror hit its mechanical stop and hold there to record that as the reference point.
Tip: if your car folds on lock, you can often do the same thing by locking and unlocking with the fob, pausing between each. Same principle, less button mashing.
Step 5: Use the manual mirror adjustment to re-teach position
On some cars the fold position is tied to the mirror glass adjustment. The procedure is to select the left mirror with the adjustment switch, run the glass fully up, down, left and right to its stops, then repeat on the right.
You are doing the same job as Step 4 but for the glass motors rather than the fold motor. If your manual describes a glass relearn, follow it exactly, including which mirror to select first.
Tip: move the glass slowly and let it click at each stop. Fast flicks past the limit can be ignored by the module.
Step 6: Try the fob and lock-cycle method
If the button method does nothing, cycle the locks. Lock the car, wait for the mirrors to fold (if they do), then unlock and let them unfold. Repeat a few times with a pause at each end.
On cars where the mirrors fold on lock, this is often the only relearn the owner can trigger without a scan tool. It costs nothing to try and it either works or it does not.
Tip: stand where you can see both mirrors. Watching one side tells you half the story.
Step 7: Disconnect and reconnect the 12V battery (only if your manual allows it)
A body-control module that has glitched can sometimes be cleared by a 12V power cycle. This is low-voltage work, but it is not risk-free: some cars lose radio codes, seat memory, clock settings or window one-touch positions, and a few need a relearn afterwards.
Only do this if your owner's manual describes a battery disconnect procedure, and follow it. Disconnect the negative terminal, wait a few minutes, reconnect, then run through Steps 4 and 5 again.
Tip: if your car has any high-voltage system, do not start undoing battery connections you do not recognise. The 12V aux battery is fine to touch; the traction battery is not, and anything that looks like a big orange cable is off-limits. Our diagnostic and fuse guides explain which circuits are safe for an owner to check.
Step 8: Check the fuse and the switch
If the mirrors are completely dead, find the mirror or body-control fuse in the manual's fuse chart and check it. A blown fuse is a five-minute fix and explains a lot of "my mirrors stopped working" stories.
While you are there, listen to the switch. A click that sounds weak or intermittent points to a failing switch pack, which no amount of resetting will fix.
Tip: if you have already replaced a fuse and it blows again, stop. That is a short circuit and it needs a technician, not another fuse.
Step 9: Know when to stop
Stop and see a qualified technician if any of these apply:
- The mirror motor grinds, clicks loudly or moves in jerks
- The mirror housing is loose, cracked or visibly bent
- A fuse blows repeatedly
- The reset procedure works but the fault returns within days
- Your manual says the relearn requires a scan tool
A mirror that re-learns and then forgets is usually a failing motor, a damaged position sensor or a wiring fault in the door loom. That is diagnosis with a multimeter and a wiring diagram, not a driveway job for most owners.
Tip: photograph the fault before you book it in. A short video of the mirror failing is worth more to a technician than a description.
Pro tips
- Do the reset with the car clean and dry. Grit in the hinge is a common reason a relearn will not stick.
- If one mirror folds slower than the other, the slow one is usually the one about to fail. Note it now.
- Do the procedure twice in a row if the first attempt half-works. Modules sometimes need a second pass to store the reference.
- Check your car's settings menu for a fold-on-lock toggle. Turning it off, resetting, then turning it back on fixes a surprising number of glitches.
- If you are comparing two cars and folding mirrors matter to you, check whether the feature is standard or an option on each trim. Head-to-head EV comparisons are a quick way to see that before you buy.
- Keep a note of the date and what you tried. If it goes to a garage, that history saves diagnostic time.
Common pitfalls
- Skipping the pause at each end. The module needs to see the mirror hold at its stop. Rushing the cycle is the single most common reason a reset fails.
- Following a procedure for the wrong model year. Mirror behaviour changes between facelifts. Verify your exact model before you trust a forum post.
- Forcing a jammed mirror by hand. You can strip the gearbox. Clear ice and grit first, then use the switch.
- Assuming a dead mirror is a calibration fault. No movement at all points to power or switch, not position memory. Check the fuse before you reset anything.
- Disconnecting the battery without reading the manual. You can lose radio codes and window one-touch settings, and on some cars you will need to relearn those too.
Useful resources
Your owner's manual is the only source that is guaranteed correct for your car, so start there. If you want to understand the wider electrical picture before you dig further, the EV troubleshooting guides cover the safe owner-level checks and draw the line clearly at high-voltage work. The free EV calculators and tools are handy if you are also working out running costs or charging times while you are thinking about your car. And the EV blog has more owner-focused fixes if this one leads you to another niggle.
FAQ
How long does a mirror reset take? The procedure itself is usually a few minutes. Allow 15-30 minutes total so you can try it twice and check the fuse in between.
Why does only one mirror fail to fold? Asymmetry usually means a mechanical or wiring fault on that side, not a calibration issue. Check the hinge for grit or damage first, then the door loom.
Will disconnecting the battery damage my car? It can reset radio codes, clock and window one-touch settings, and some cars need a relearn afterwards. Follow your manual's procedure and never touch high-voltage components.
Can I reset folding mirrors without a scan tool? Often yes, using the fold button or the lock cycle. Some models require a scan tool, and your manual will say so.
Do folding mirrors work in freezing weather? They can stall if ice binds the hinge. Clear the gap before you cycle them, and avoid forcing them by hand.
Final word
Most folding mirror faults are a lost reference point, and a slow, deliberate fold-and-unfold cycle fixes them more often than people expect. Work through the steps in order, pause at every stop, and give it a second attempt before you give up. If the fault keeps coming back, that is your car telling you it needs a proper look, and there is no shame in handing it over.
