What would cause a key not to turn in the ignition?

Often, a key won’t turn because the steering column is locked, the key is worn or the ignition cylinder is seized, or the transmission isn’t fully in Park. Other common causes include debris in the lock, a stiff or cold mechanism, or a misaligned steering wheel.

There are several broad categories of failure that can prevent turning the key. This article breaks down the mechanical, electrical, and security-system factors, plus practical steps you can take to diagnose and address the problem. Understanding the difference helps you decide whether to try quick fixes at home or call a mechanic or locksmith.

Mechanical causes

These are physical issues with the ignition lock, steering column, or related hardware that can stop the key from turning. The items below cover the most frequent scenarios and how to check them.

• Steering wheel lock engaged or heavy resistance in the steering column. Gently wiggle the wheel left and right while turning the key to release the lock.


• Key worn, bent, or damaged. A worn key may no longer align the lock’s tumblers; try a spare or get a new key cut.


• Ignition lock cylinder seized or worn. Debris, corrosion, or wear inside the cylinder can prevent rotation or make turning difficult.


• Shift interlock or gear not in Park (automatic) or neutral. Some vehicles won’t let the key turn if the transmission isn’t fully in Park or Neutral and the brake may need to be pressed.


• Key not fully inserted or blocked by dirt or damage. Debris or a bent key can obstruct proper engagement.


• Extreme cold or lack of lubrication causing stiffness. A dry or frozen lock can feel jammed and may need careful lubrication or warming.

Diagnosing mechanical causes often starts with verifying the steering wheel isn’t locked, inspecting the key for wear, checking that the gear is in the correct position, and inspecting the ignition cylinder for obvious obstruction or corrosion.

Electrical and security system factors

In some cars, electronic or security-system problems can affect how the ignition responds, even if the key itself could mechanically turn. The following points cover common electrical or immobilizer-related causes.

• Faulty ignition switch or wiring. Wear or damage behind the ignition can make turning the key feel stiff or produce no response.


• Immobilizer or transponder problems. If the vehicle’s anti-theft system doesn’t recognize the key, the engine may not start, and some cars may exhibit delayed or no ignition engagement.


• Battery or electrical faults in a smart-key system. For cars with keyless/remote systems, a dead car battery or a weak key fob battery can prevent the system from responding or cause the key to feel unresponsive.


• Blown fuses or bad relays in the ignition circuit. Electrical faults can render the ignition circuit inactive, giving the impression that the key won’t turn.

If the key turns but the car won’t start, or if you notice electrical symptoms (dash lights flicker, no response when turning the key), the issue is more likely electrical or security-related and may require professional diagnosis and, if needed, programming of the ignition/immobilizer system.

When to seek professional help

If you cannot resolve the issue quickly with the steps above—or the key refuses to turn despite a clean key and proper gear—contact a locksmith or your vehicle manufacturer’s dealership. Ignition cylinder replacement, steering-column service, or programming for immobilizer systems can require specialized tools and expertise.

Summary

A key that won’t turn typically points to a mechanical jam (steering wheel lock, worn key, seized cylinder) or a misaligned gear position, with electrical or security-system issues as a secondary possibility if turning is possible but starting fails. Start with simple checks—wiggle the wheel, inspect the key, verify Park/Neutral and braking—then consider lubrication or replacement of worn components. If problems persist, professional evaluation is recommended to prevent further damage and ensure safe operation of the vehicle.

How to fix unresponsive car keys?

Battery replacement – If the key fob is unresponsive, the first step is often to replace the battery. This is a simple and inexpensive fix that can often restore functionality. Button replacement – In cases where the buttons are broken or stuck, they can sometimes be replaced.

Why would a key go in but not turn?

A key that won't turn but goes in can often be fixed by lubricating the lock with a graphite-based lubricant or a silicone-based spray and gently wiggling the key. For car ignitions, the steering wheel lock or a misaligned gear shift can be the culprit, while for a door lock, it could be a bent key, debris, or a misaligned door frame. If these steps fail, the lock or key may be worn or damaged and may require a locksmith. 
For door locks

• Lubricate the lock: Spray a graphite-based lubricant or a silicone-based spray into the keyhole. Avoid oil-based products like WD-40, as they can attract dirt over time. 
• Insert the key and jiggle: Insert the key, then gently turn it while wiggling it back and forth. This helps the lubricant work its way into the pins. 
• Check the key: Make sure the key isn't bent or damaged. 
• Check door alignment: Ensure the door is not putting side pressure on the latch. You can test this by trying to turn the key while the door is ajar. 

This video demonstrates how to fix a door lock that won't turn: 58sbluesxtYouTube · May 9, 2021
For car ignitions

• Check the gear shift: Make sure the car is fully in Park or Neutral. 
• Disengage the steering wheel lock: Gently turn the steering wheel from side to side while simultaneously trying to turn the key. This releases pressure on the ignition lock cylinder. 
• Lubricate the ignition cylinder: Use a small amount of graphite or a dry lubricant spray, then insert and turn the key. A small straw attachment helps. 

You can watch this video to learn how to disengage the steering wheel lock: 51sWorld DrivingYouTube · Feb 7, 2019
If the lock still won't turn

• Call a locksmith: If you've tried these steps and the key still won't turn, the lock cylinder or key is likely worn or damaged and may need to be replaced. A locksmith can diagnose and fix the problem. 

This video shows what to do if the key still won't turn after trying lubrication: 55sChris NotapYouTube · Jun 5, 2025

Can I spray WD-40 in an ignition switch?

No, you should not spray regular WD-40 into an ignition switch because it can attract dirt and dust over time, making the problem worse and potentially causing damage. It is best to use a graphite or dry silicone lubricant specifically designed for locks and ignition cylinders. 
This video demonstrates how to lubricate a sticky ignition switch with graphite lubricant: 56sTwoWheelObsessionYouTube · Jan 14, 2018
Why you should avoid WD-40

• Attracts dirt: WD-40 is a solvent and water displacer, but its oily residue can attract dirt and dust, which will mix with the lubricant to form a gritty paste. This can cause the lock mechanism to seize up, making the key difficult to turn. 
• Can cause damage: Its solvent properties can also potentially damage plastic components within the ignition switch, and its tendency to thicken over time is not ideal for lock cylinders. 
• Temporary fix: While it might provide a temporary fix, the long-term effects are negative and can lead to a more serious and costly repair. 

What to use instead

• Graphite lubricant: This is a dry lubricant that will not attract dirt and is ideal for lock cylinders. 
• Dry silicone spray: Similar to graphite, this is a dry, non-stick lubricant specifically made for locks that will not attract dirt and residue. 
• Contact cleaner: If the issue is dirt and grime, an electrical contact cleaner can be used to clean the contacts first, followed by a proper dry lubricant. 
• How to apply: Spray the dry lubricant directly into the key slot and work the key in and out several times to distribute the lubricant evenly.