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uk Transport & mobility emergencies

What to do if…
your physical car key is damaged, broken, or will not turn and you cannot unlock or start the vehicle

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy UK guide

Short answer

Stop forcing or repeatedly turning the key. Deal with any roadside danger first, then inspect the key, try an undamaged spare once, or contact your breakdown provider or a vetted auto locksmith.

Do not do these things

  • Do not force a bent, cracked, twisted, or partly broken key into a door lock or ignition.
  • Do not twist the key with pliers or use another tool for extra leverage.
  • Do not strike, drill, prise, or probe the lock or ignition.
  • Do not put glue or lubricant into the lock unless the vehicle handbook or a qualified professional specifically directs you to.
  • Do not push a broken key fragment further into the lock.
  • Do not try to force open a door or window with homemade tools.
  • Do not continue if the key flexes, the lock grinds, or resistance increases.
  • Do not attempt repairs beside moving motorway traffic or place a warning triangle on a motorway carriageway.

What to do now

  1. Deal with road danger first. If the vehicle is causing an obstruction and you can reach the controls safely, switch on the hazard warning lights. On a motorway or other high-speed road, follow the Highway Code breakdown procedure. If you cannot reach a place of relative safety or leave the vehicle safely, stay inside with seat belts and hazard lights on and call 999 immediately, asking for the police.

  2. Remove the key gently if it comes out without force. Check the metal blade for bending, cracks, twisting, heavy wear, or missing pieces. Do not reinsert a visibly damaged key.

  3. Try an undamaged spare key once, if available. Use the normal procedure in the vehicle handbook. If the spare works normally, stop using the damaged key.

  4. Check the handbook if the door will not unlock. Confirm where the mechanical lock is located, whether it has a removable cover, and how the physical key should be used. Make only a gentle attempt with a straight, undamaged key.

  5. Try one gentle steering-lock release only if the ignition key is undamaged. Secure the vehicle as directed in its handbook. Move the steering wheel gently towards the side where it has a small amount of movement while applying light turning pressure to the key. Stop if the key bends, remains firmly stuck, or the handbook gives different instructions.

  6. Leave a broken fragment in place. If part of the key is lodged in the door lock or ignition, do not push, glue, drill, or probe it. Note whether any part remains visible so you can tell the person attending.

  7. Contact appropriate help if the checks fail. Call your existing breakdown provider and ask whether your cover includes key or lock assistance, or contact a vetted auto locksmith experienced with vehicle keys and locks.

  8. Give clear details when requesting help. Provide your exact location, vehicle make, model, year and registration number, whether the vehicle is locked, whether the key is visibly damaged, whether a fragment is inside the lock, and whether an undamaged spare exists.

What can wait

You do not need to decide now whether to replace every lock, buy several spare keys, change breakdown cover, or make an insurance claim. Permanent repairs, key programming, dealer quotations, and replacement comparisons can wait until you and the vehicle are safe and the immediate problem has been assessed.

Important reassurance

Stopping before applying more force protects the damaged key and lock from further attempts. A non-turning ignition key may sometimes involve pressure on the steering lock, while visible key damage or a lodged fragment is better left for professional assessment.

Scope note

This guide covers immediate safety, limited gentle checks, and arranging access or recovery. Diagnosing the lock, extracting a broken key, programming a replacement, or repairing the ignition may require an auto locksmith, breakdown service, vehicle dealer, or garage.

Important note

This is general information, not vehicle-specific mechanical, security, legal, or roadside safety advice. Follow the vehicle handbook and instructions from the emergency services, road operator, breakdown provider, or professional attending the vehicle.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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