Key won’t turn in the ignition

Get it checked soon

A key that won’t turn is usually the steering-wheel lock binding — and if not, a worn key, a worn lock cylinder, or the shifter not fully in Park.

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What this usually means

A stuck key feels alarming, but the most common cause isn’t a fault at all. Most cars lock the steering column when the key is removed, and if the wheels were turned against a curb — or the wheel moved after shutoff — the lock pin ends up loaded with spring pressure that physically prevents the cylinder from rotating. The fix is a two-hand move: turn the steering wheel gently back and forth while turning the key, and the pressure releases. If that ritual is needed constantly, or the key feels gritty and vague, the wear is real: keys and lock cylinders grind against each other for years, and either can wear past the point of lining the pins up. Automatics add one more gate — the ignition won’t release unless the shifter is fully seated in Park.

Most likely causes

high
Steering wheel lock under pressureBy far the most common cause. The column lock is spring-loaded against the key cylinder — wiggle the steering wheel left and right while turning the key and it usually frees immediately. Not a defect, just how the lock works.
high
Worn keyYears of use round off the cuts that lift the lock pins to the right heights. A worn key gets progressively fussier — try your spare; if the spare turns easily, the daily key is the problem, and a fresh copy cut from the spare is the cheap fix.
medium
Worn or failing ignition lock cylinderThe pins and springs inside the cylinder wear too, making every key feel sticky or requiring a jiggle to turn. It typically worsens gradually until the cylinder needs replacement.
medium
Shifter not fully in ParkOn automatics, an interlock keeps the ignition from turning (or releasing the key) unless the transmission is properly in Park. Push the shifter firmly into Park, or try turning the key while in Neutral.
low
Debris in the keyway or a damaged keyPocket lint, a bent key, or the wrong key from the ring blocks the pins mechanically. Inspect the key and keyway before assuming worse.

Is it safe to drive?

Get it checked soon. There’s no safety issue once the car is running — the risk is being stranded when the key finally refuses to turn at all, which tends to happen away from home. If the wiggle-the-wheel trick works, drive on and address the underlying wear soon. Avoid forcing the key hard: snapping a key off in the cylinder converts a cheap fix into a locksmith visit.

Typical fix & cost

Start free: wiggle the steering wheel, seat the shifter firmly in Park, and test the spare key. A new key cut from the spare (or by code from a dealer or locksmith) solves worn-key cases cheaply, though transponder keys cost more to duplicate and program. A worn cylinder is replaced by a locksmith or shop — costlier on cars where the cylinder must be matched to the keys and immobilizer. A dry graphite-based or lock-specific lubricant can help a sticky cylinder; avoid oily sprays that gum up the pins over time.

Typical range: $20–$500

A basic key copy is cheap; transponder keys cost more; a lock-cylinder replacement with programming is the high end.

The price depends on which cause it turns out to be — so confirm the cause before paying. Diagnose this for my exact vehicle →

Frequently asked

Why won’t my key turn even though it’s the right key?

Nine times out of ten the steering-wheel lock is binding the cylinder. Turn the wheel gently side to side — one direction will have a little give — while turning the key, and it should release. If it happens constantly, the key or cylinder is likely worn.

Should I spray WD-40 into the ignition?

Use a dry graphite or dedicated lock lubricant instead. Oily general-purpose sprays attract dust and can gum up the cylinder’s pins over time, making the problem worse. And if the real cause is the steering lock or a worn key, no lubricant will fix it.

Do I need a dealer to fix a worn ignition cylinder?

Not always. An automotive locksmith can often rekey or replace a cylinder — frequently for less than a dealership — and handle transponder programming. Cars with keys tied tightly to the immobilizer may still need dealer equipment, so it’s worth a phone call to compare.

Seeing this on your car? Get a diagnosis specific to your exact year, make and model — RedlineAi ranks the likely causes against real recall and complaint data, with an honest confidence score.

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Related symptoms

Car won’t start and makes no sound at all Shifter is stuck in park Car won’t start (clicks or cranks but won’t fire)

This is general guidance, not a substitute for a hands-on inspection. Cost ranges are broad estimates to set expectations, not quotes. For safety-related issues, have the car inspected by a licensed mechanic before driving.