Why is my Subaru not letting me turn the key?
Most often, the key won’t turn because of a steering lock, a worn ignition cylinder, a damaged or unrecognized key, or a gear/interlock issue.
When the key won’t turn in a Subaru, the problem can be mechanical (steering column lock, ignition cylinder wear, or a worn key) or safety-related (gear in Park, brake interlock, or immobilizer). The guide below outlines the common causes, safe diagnostic steps, and when to seek professional help.
Common reasons your Subaru key won’t turn
These are the typical causes behind a key that won’t rotate, from quick checks to more involved problems.
- Steering wheel lock or stiff steering column: The wheel can lock when the key is removed or when the column is under load, preventing the ignition from turning.
- Gear selector or interlock not satisfied: In automatics, the key often won’t turn if the shifter isn’t fully in Park or the brake interlock isn’t engaged.
- Worn or damaged key (or transponder issue): A worn blade or failing immobilizer chip can prevent the key from being recognized or turning smoothly.
- Ignition lock cylinder wear or fault: Over time the cylinder can seize or become loose, making turning difficult or impossible.
- Immobilizer/key recognition problems: If the immobilizer doesn’t recognize the key, the car may prevent starting or turning, especially in newer models with advanced anti-theft.
Concluding: If the problem persists after these checks, avoid forcing the key and consider professional evaluation to prevent damage to the ignition system.
Steering wheel lock and column issues
Many Subaru models feature a steering lock that engages if the wheel is turned after the key is removed. Gently applying pressure to the steering wheel while turning the key, and ensuring the wheel isn’t under load, can release the lock. If the wheel is stubbornly locked, stop and seek service to avoid bending or snapping the ignition cylinder.
Gear interlock and Park position
Most automatics require the transmission to be in Park (or the brake interlock to be satisfied) before the key can turn. Verify the lever is fully in Park, press the brake pedal firmly, and then attempt the key again. If the shifter indicator seems misaligned, the interlock may be malfunctioning and will need inspection.
Key and immobilizer issues
A worn or damaged primary key or one with an aging transponder can fail to communicate with the immobilizer, preventing smooth turning or starting. If you have a spare mechanical key, test it in the ignition to rule out a key-specific problem. If the immobilizer is suspected, a dealer or locksmith can diagnose and, if needed, re-key or reprogram the system.
Ignition cylinder wear or fault
Aging ignition cylinders can seize or become loose, making turning difficult. If you notice a grinding sensation, unusual looseness, or persistent sticking, the cylinder likely needs inspection or replacement by a qualified technician.
Safe steps to try at home
Before attempting any DIY checks, avoid forcing the key, which can cause costly damage. Start with simple, non-destructive checks to narrow down the cause.
- Make sure the car is in Park (automatic) or the clutch is fully depressed (manual), and press the brake pedal before attempting to turn the key.
- Gently wiggle the steering wheel left and right while turning the key to release a possible steering-column lock.
- Inspect the key for wear or damage. If you have a spare mechanical key, try using it to determine if the issue is key-related.
- Check for debris or objects in the ignition slot and ensure you are using the correct key for your model/year. Clean the blade if grime is present.
- If the key turns but the engine won’t start, the issue may be the immobilizer. Document the key ID (if visible) and contact a Subaru dealer or licensed locksmith for a diagnostic and potential re-programming.
Concluding: If these steps don’t resolve the issue, or you hear grinding, clicking, or notice the cylinder remains sticky, seek professional service promptly to avoid further damage or safety risks.
Summary
When your Subaru won’t turn the key, the most common causes are a locked steering column, a gear/interlock issue, a worn or damaged key, or a failing ignition cylinder. Begin with safe checks—steady pressure with the wheel unweighted, Park/brake confirm, and try a spare key—and avoid forcing the key. If the problem persists, consult a Subaru dealer or a licensed automotive locksmith for a precise diagnosis and proper repair.
