"My key is stuck in the ignition" is one of the more panic-inducing car problems — especially in a supermarket car park with a queue forming behind you. The good news: about 70% of stuck-ignition cases are solved by a simple steering-wheel wiggle that most drivers don't know about. The remaining 30% need a Cornwall mobile auto locksmith — typical cost £100-£250 — and almost never need a main dealer or recovery. This guide walks through the diagnostic sequence and what each scenario costs.
The three problem types
1. Key won't turn (most common, usually free to fix)
The steering lock has engaged. Modern cars have an anti-theft steering lock that automatically activates if you turn the wheel after taking the key out. To release: gently rock the steering wheel left and right while simultaneously turning the key. The wheel needs to be unloaded a fraction so the lock pin can retract. 10 seconds, no cost.
If wiggling doesn't work, try with the brake pressed (auto cars) or the clutch pressed (manuals) — some immobilisers require these.
2. Key won't come out (common, usually free to fix)
On automatics: the gear selector must be in Park. Even fractionally short of Park (between R and P, or P-but-not-fully-engaged) prevents key release on most modern cars. Push the gear lever firmly into Park, often you have to depress the brake while doing so.
On manuals: rare but happens. Usually a worn ignition wafer — jiggle the key gently while pulling. If persistent, lubricate (graphite or PTFE, NOT WD-40) and work in/out 10 times.
3. Key snapped in the ignition (rare, professional job)
Brass keys fatigue over 5-10 years of daily use. If your key snapped while turning, you have two pieces: the bow (the head, which you're holding) and the cut blade (still in the ignition). Don't try to extract the blade yourself. Modern ignition barrels are tightly fitted and DIY tools (screwdrivers, paperclips) usually push the fragment deeper, damaging the barrel.
Cornwall mobile auto locksmith costs:
- Fragment extraction + new key cut and programmed: £100-£250
- Fragment extraction + barrel replacement (if damaged): £250-£500
Other causes (less common)
Failed ignition barrel
Internal pin or spring failure inside the barrel. Symptom: key turns but doesn't engage anything, or the barrel feels "loose" / rotates without effect. Needs replacement. £250-£500 in Cornwall for most mainstream cars.
Dead key fob battery (proximity key cars only)
On push-button-start cars, the fob doesn't actually go in the ignition — it just needs to be inside the cabin. A dead fob battery prevents start. Most cars have a backup: hold the fob against the start button physically to use it like a transponder. Check your manual; battery replacement £3-£10 from any supermarket.
Engine fault triggering immobiliser
Some immobiliser faults prevent the key turning, especially after a battery jump-start. Symptom: dashboard immobiliser light stays lit. Try locking and unlocking the car with the fob 2-3 times; sometimes resyncs. If persistent, mobile auto locksmith can run diagnostics — £40-£100.
What NOT to do
- Don't force the key. Brass keys snap easily once they're stressed. Once snapped, the job goes from "free fix" to £100-£250.
- Don't use WD-40 in the ignition. Leaves a sticky residue that gums up the pin chambers over time. Graphite, PTFE, or silicone only.
- Don't try to "fish out" a snapped key fragment with a screwdriver or paperclip. Almost always makes the damage worse.
- Don't recover the car to a main dealer. Recovery fees + dealer labour = £300-£600 minimum. A mobile auto locksmith comes to you for £100-£250 in most cases.
When to call a locksmith vs the AA / breakdown
For ignition problems, a mobile auto locksmith is almost always the right call — they have specialist tools, OBD diagnostic equipment, and replacement parts in the van. The AA / RAC can usually only diagnose and recommend a follow-up; they rarely carry the parts to fix an ignition on the spot.
Exception: if your car is undrivable and you're stranded (e.g., car won't start, you're on a busy road), call your breakdown provider first for safety / recovery, then arrange a locksmith to attend the recovery location.
Stuck ignition key in Cornwall right now? Submit your postcode — we'll match you with a Cornwall mobile auto locksmith who'll come to wherever you're parked, usually within 1-2 hours.
Frequently asked questions
Why won't my car key turn in the ignition?
Most common cause: the steering lock has engaged. Gently rock the steering wheel left and right while turning the key — the lock pin retracts when the wheel is unloaded. Works around 70% of the time, takes 10 seconds, costs nothing. If that fails, try with the brake pressed (auto) or clutch pressed (manual).
Why won't my key come out of the ignition?
On automatics, the gear selector must be fully in Park — even fractionally short prevents key release on most modern cars. Push the lever firmly into Park (often with the brake pressed). On manuals, jiggle the key gently while pulling; if it's a worn wafer, a graphite lubricant puff usually frees it.
What if my key has snapped in the ignition?
Don't try to extract the fragment yourself — screwdrivers and paperclips push it deeper and damage the barrel. Call a Cornwall mobile auto locksmith. Typical cost: £100-£250 for extraction plus a replacement key cut and programmed. If the barrel is damaged in extraction, add £100-£250 for replacement.
Should I call the AA or a locksmith?
For ignition issues, mobile auto locksmith is almost always better — they have the specialist tools and replacement parts. The AA / RAC will usually diagnose and recommend a follow-up callout. If you're stranded somewhere unsafe, call breakdown for recovery first, then arrange a locksmith to attend.
How much does it cost to fix a stuck ignition in Cornwall?
£100-£200 for extraction and lubrication (most cases). £200-£400 if the ignition barrel needs replacement. £100-£250 if the key is snapped and needs replacing. All typically 50-70% cheaper than a main dealer for the same work, and the locksmith comes to your car rather than you needing recovery.