Last updated: May 2026
Broken Key in Ignition or Door Lock
Professional extraction in Exeter and Devon — replacement key cut and programmed the same visit
A key snapped in the ignition or door lock is stressful — but it is a very fixable problem when handled correctly. We extract broken key fragments across Exeter and Devon using professional extraction tools designed for the job, assess the barrel condition honestly, and cut and programme a replacement key on the same visit. One call, one visit, problem resolved.
What’s Included
Why Car Keys Break — Understanding the Root Cause
A key does not break randomly. In almost every case there is an underlying cause — and identifying it matters, because the same cause can lead to a second break or a barrel failure if left unaddressed.
The mechanics of a broken key
Car key blades are manufactured from nickel-silver alloy — a material chosen for its combination of hardness and workability. Under normal operating loads, a quality key blade lasts many years without failure. When a key breaks, one of four things has typically happened: the blade had an existing crack or notch that propagated under normal stress; the rotational resistance in the barrel exceeded the blade’s tensile strength; the key was forced rather than turned smoothly; or the blade was a poor-quality replacement that did not meet the original material specification.
Of these, worn ignition barrel is by far the most common cause. As barrel wafer tumblers wear over years of use, they create uneven resistance — the key has to work harder to rotate the cylinder. Eventually, the blade fails at its weakest point, typically where the blade profile is narrowest or where a worn cut has created a stress concentration.
Why the blade matters as much as the barrel
Key blades cut from poor-quality blanks — particularly low-cost online blanks — often have incorrect profile geometry that creates binding at specific points in the rotation. This concentrates stress on parts of the blade that should not be load-bearing. If your key broke from a non-original blank, the barrel may be perfectly fine and the problem lies entirely with the blank specification. We assess both on arrival.
The IMI training standard for auto locksmiths covers correct key blank identification — using the wrong blank specification is one of the most avoidable causes of key failure and premature barrel wear.
How It Works
Ignition vs Door Lock — Two Different Scenarios
Where the key broke significantly affects the approach, the likely barrel condition, and the urgency of the situation. Here is what each scenario typically means.
- Usually breaks during start attempt — higher rotational load
- Vehicle may be stranded — cannot drive away
- Engine may be stuck in start position if key turned fully
- Barrel wear is the most likely underlying cause
- Barrel assessment essential before cutting new key
- If engine running, do not try to switch off using fragment
- Usually breaks during lock or unlock attempt
- Lower rotational load — often a cleaner break
- Vehicle can still be locked and unlocked via remote
- Barrel damage less common than with ignition breaks
- Fragment position is fixed — simpler extraction in most cases
- Boot lock breaks are treated the same way as door lock
Do Not Attempt DIY Extraction — Why It Makes Things Worse
The most common complication on broken key extraction jobs is not the original break — it is what happened after. Here is what most DIY extraction attempts do and why each makes professional extraction harder.
The right thing to do is leave the fragment exactly where it is, stop inserting anything into the lock, and call us. A clean, undisturbed fragment is almost always straightforward to extract. A fragment that has been pushed deeper, turned, or accompanied by adhesive is a genuinely difficult job. The difference is not the original break — it is what was attempted afterwards.
All Makes Covered Across Exeter and Devon
We carry out broken key extraction across all major makes on Devon roads. Ford and Vauxhall ignition barrels are among the most frequent extraction jobs we see — typically older models where barrel wear has been developing for years. Land Rover Defender ignition barrels are common in rural East Devon and Somerset, where working vehicles accumulate high key-cycle counts. BMW key breaks are less common but more complex given the EWS/CAS security architecture that must be addressed in the replacement key. We carry extraction tools and common key blanks for all these platforms in the van.
Covering Exeter and Devon
We attend broken key extraction calls across Exeter city centre, Marsh Barton, all surrounding suburbs and throughout Devon and Somerset. Based near Honiton in East Devon, we cover most of the area within 45–60 minutes for emergency calls. For non-emergency situations — a door lock break where the car can still be used remotely — we can book a convenient time.
Frequently Asked Questions
Can you always extract without damaging the barrel?
In most cases yes. Professional extraction tools are designed to grip and remove the broken fragment without forcing or scoring the barrel walls. However, if the key has already been pushed deeper by a DIY extraction attempt — which is the most common complication we encounter — or if the fragment broke in a position that wedges against the tumblers, extraction becomes more difficult. We assess the situation honestly on arrival and tell you if there is any risk before proceeding. We never attempt extraction that we are not confident in.
Do I need a new key after extraction?
Yes — the broken key cannot be repaired. Once we have extracted the fragment, we cut a new key blade to your vehicle’s specification and programme it on the same visit. You drive away with a complete, working replacement key. We recommend also ordering a spare key at the same time — it costs significantly less done simultaneously than as a separate visit later.
How long does broken key extraction take?
Extraction itself typically takes 15–40 minutes depending on how deep the fragment is, the position it broke in, and whether any prior attempts have complicated the situation. Add key cutting (10–15 minutes) and programming time for a total visit of approximately 60–90 minutes. We give a realistic estimate after initial assessment on arrival.
My key broke because the ignition was already stiff — does the barrel need replacing?
Quite possibly. A key that snaps during normal use rather than as a result of an impact almost always does so because the rotational resistance in the barrel exceeded the blade’s tensile strength — meaning the barrel was forcing the key to work harder than it should. We assess the barrel condition as part of every extraction job. If the wafer tumblers are worn to the point where the problem will recur, we advise barrel replacement honestly. See our ignition repair service for detail on what barrel wear looks like and what replacement involves.
Should I try to remove it myself before calling?
No — and this is important. The most common complication we encounter on broken key extraction jobs is a fragment that has been pushed deeper, turned further, or damaged by a DIY attempt using pliers, screwdrivers or improvised tools. These methods feel like progress but almost always make the professional extraction harder and sometimes impossible without barrel removal. Do not insert anything into the lock before we arrive. Leave the fragment exactly where it is.
The key broke in the door lock, not the ignition — is that different?
The extraction process uses similar tools but the approach differs because a door lock presents different access and the tumblers are oriented differently to an ignition barrel. Door lock extractions are generally slightly more straightforward because the rotational position is fixed and there is less risk of the fragment being in a starting position that locks the mechanism. We cover both ignition and door lock extractions across all makes and models.
Part of the key is in the lock and part broke off outside — what should I do?
Do not attempt to turn the remaining fragment with pliers — this is the most common mistake and it almost always pushes the fragment into the barrel in a worse position. Leave everything exactly as it is and call us. Bring the broken-off section with you — even if it looks useless, it confirms the key profile and blade length, which helps us identify the correct blank for the replacement.
My key snapped while the ignition was turned — the engine is running. What do I do?
If the engine is running with a fragment in the ignition, do not attempt to switch it off using the remaining fragment — you risk pushing it further and jamming the barrel in a position that prevents the engine being switched off at all. If possible, drive to a safe location and leave the engine running until we arrive — we can extract the fragment and then address switching the ignition to off position safely. Call us immediately and describe the exact situation. This is a priority callout and our 24 hour service covers exactly this scenario.
Key Snapped? Call Now.
Do not attempt removal yourself. Leave the fragment in place and call us. Extraction, barrel assessment and new key — all one visit.