DISP / SCN-ALL-LOST
By scenario / Lost all keys
Lost Car Key No Spare Cost: $250 to $750 All-In
Losing every working key to your car is the most expensive scenario in this catalogue. The locksmith or dealer must decode or VIN-cut the blade from scratch, fully reset the immobiliser, then pair every new key. This page breaks down every component of the bill, the typical totals by car category, and the structural reasons the all-keys-lost uplift exists.
On a mainstream smart fob car (Honda Civic, Toyota Camry, Ford F-150 mid-trim) at a planned Tuesday-afternoon call, all-keys-lost runs $350 to $500. The base smart fob is $240 to $360. Lock decoding adds $60 to $120. Full immobiliser re-pair adds $40 to $100. Add a second key in the same visit ($150 to $200) and you walk away with two paired keys, no return visit, total $500 to $700.
The same job at 11pm on a Saturday in a hotel car park climbs to $550 to $750. After-hours surcharge adds $50 to $100. If the car is in an inaccessible spot (basement parking, gated lot the locksmith cannot reach), towing to a more accessible location adds $75 to $200. The compounding effect of emergency timing plus a difficult location is what turns a routine all-keys-lost into a $750 night.
On a European luxury all-keys-lost (BMW, Mercedes, some VW/Audi), the dealer path is often unavoidable and the total climbs to $600 to $1,200. Towing $100 to $200 to the dealer. Dealer service appointment 1 to 7 days, during which you are without the car. Dealer parts and labour for the smart fob $400 to $800. Ignition module re-pin if required, another $150 to $300. The total is dominated by the parts cost, which the locksmith path cannot reduce because the parts are dealer-restricted.
Cost breakdown
AKL-01
Standard key replacement (baseline)
What it would cost if you had one working key. Smart fob mid-pack: $260 to $360. Transponder: $100 to $200. Premium smart fob (BMW Display Key): $400 to $700.
AKL-02
Lock decoding uplift
Locksmith removes the door cylinder, decodes the pin pattern, generates the bitting code, then cuts the new blade to match. Adds 20 to 40 minutes on site.
AKL-03
VIN-cut blade (alternative to decoding)
On many makes, the cut code is derivable from the VIN through a manufacturer database. Locksmith pulls the code, cuts the blade. Faster than decoding (no lock removal) but requires manufacturer database access.
AKL-04
Full immobiliser re-pair
On all-keys-lost, the immobiliser must be reset and every new key paired from scratch. Some makes require a longer pairing sequence than the standard add-a-key flow. Adds 20 to 40 minutes.
AKL-05
After-hours / weekend call-out
Saturday evening, Sunday, or weekday after 9pm. Applies if you choose emergency dispatch instead of waiting until morning.
AKL-06
Towing to dealer (worst case)
Required on a small subset of vehicles where the ignition module must be removed and re-pinned at the dealer service bay (some BMW, Mercedes, certain Range Rover, some 2015+ VW MQB). Not needed on mainstream cars.
Section 02 / Why all-keys-lost costs more
Four structural reasons the bill jumps
First, no template. When you have one working key, the locksmith uses it as a physical template to cut a matching blade (no decoding needed) and as an authentication credential to add the new key to the immobiliser (no full re-pair needed). With zero working keys, both steps must happen from scratch.
Second, lock work. The locksmith either removes the door cylinder to physically decode the pin pattern, or pulls the cut code from the VIN through a manufacturer database. Decoding adds 20 to 40 minutes on site, sometimes requires partial door trim removal, and risks scratching painted surfaces (legitimate locksmiths protect with masking tape). VIN cutting is faster but requires manufacturer database access, which not every locksmith has.
Third, immobiliser reset. The car's Powertrain Control Module stores the list of accepted key credentials. On a normal add-a-key flow, the locksmith uses the existing key's credentials to authenticate the addition. On all-keys-lost, the locksmith must enter the immobiliser's emergency pairing mode, which often requires a longer security delay (some makes enforce a 10 to 30 minute “security wait” specifically to thwart car-theft attempts).
Fourth, two-key cost amortisation. Most owners ask the locksmith to pair two new keys during an all-keys-lost visit (one primary, one spare) because the marginal cost of the second key is low ($80 to $150) compared to the original call-out and decoding (which is sunk cost by then). This pushes the total up but is the right move; without a spare immediately, you are one lost key away from doing the whole expensive dance again.
Section 03 / How to avoid the all-keys-lost scenario
The cheapest dollar in the car-key world
The single highest-ROI piece of car-key spending is buying a spare key before you need it. A planned spare key on a mainstream smart-fob car runs $240 to $360 from a locksmith on a Tuesday afternoon. The same fob bought reactively after losing your only key, with after-hours surcharge and lock decoding, runs $400 to $600. The spare-key investment pays for itself the first time it prevents an all-keys-lost call.
Better yet, a valet key spare (where supported) at $30 to $80 covers the all-keys-lost prevention case for one-quarter of the full spare cost. The valet key starts the engine, unlocks the doors, and gets you to a planned daytime appointment to add a new master fob. See the valet key cost page for the full case.
Storage matters. The spare needs to be somewhere you can reach when you have lost the primary, which often means not in the same handbag, the same car, or the same coat pocket. Common patterns: a sealed envelope in a household drawer, a magnetic hide-a-key box attached under the chassis (older cars only, modern car bodies are mostly plastic underneath), a trusted neighbour, or a relative within driving distance.
Section 04 / Provenance
Where the numbers come from
- RepairPal estimator for all-keys-lost labour and parts ranges by ZIP, as of May 2026.
- YourMechanic labour-rate database.
- Locksmith Ledger for all-keys-lost pricing trends and after-hours surcharge norms.
- BLS 49-9094 Locksmiths and Safe Repairers for wage data.
- ALOA for licensed-locksmith standards and the all-keys-lost certification cohort.
- Manufacturer service documentation (Toyota, Honda, Ford, GM, Chrysler, BMW, Mercedes) for documented immobiliser security delay procedures.
Frequently asked
- 01
How much does losing all car keys cost in 2026?
Total all-in cost typically lands between $250 and $750, depending on car make, model, time of day, and whether towing is needed. A mainstream smart fob (Honda, Toyota, Ford) at planned Tuesday-afternoon pricing runs $350 to $500. The same job at 11pm Saturday with towing required runs $550 to $750. A BMW or Mercedes all-keys-lost at the dealer runs $600 to $1,200 because of the higher base part cost.
- 02
Can a locksmith handle all-keys-lost on most cars?
Yes for Toyota, Honda, Nissan, Hyundai, Kia, Ford, GM, Chrysler, Jeep, Dodge, Mazda, Subaru, and most Lexus/Acura/Infiniti. The locksmith arrives, decodes the door cylinder or cuts by VIN, programs every key from scratch in your driveway. No tow needed. The exceptions are European luxury (BMW, Mercedes, some VW/Audi MQB), where the ignition module sometimes needs dealer-only software, and a small number of high-security applications where towing to a dealer is mandatory.
- 03
What if I am locked out of the car when I have lost all keys?
First, the locksmith uses non-destructive entry tools (slim jim, air wedge, long-reach reaching tool) to unlock the door without damaging it. This is typically $50 to $120 standalone, often bundled into the all-keys-lost total. From inside the car the locksmith can access the door cylinder to remove and decode it, or work from the ignition column directly on some makes. The lockout and the key replacement are usually a single dispatch.
- 04
Will my insurance cover all-keys-lost?
Standard auto insurance does not. Keys are treated as personal property. Comprehensive coverage may pay if the vehicle was stolen and the keys went with it (e.g. the thief took your keys after a break-in). Roadside assistance covers a lockout service call but not the cost of cutting and programming new keys. A handful of insurers (and some manufacturer programs like Honda Care) offer a key replacement add-on for $2 to $5 a month, with a typical cap of $400 to $1,000 per claim.
- 05
Is it cheaper to tow to the dealer instead of having a locksmith do it on-site?
Almost never. Towing adds $75 to $200, dealer labour and parts adds $100 to $300 over locksmith pricing, and you lose 1 to 3 days waiting for a service appointment. Tow-to-dealer is the right path only when the make requires dealer-only programming (BMW, Mercedes, some VW MQB, and the lockless-ignition Tesla cases handled by Tesla Service Center).
- 06
How long does an all-keys-lost call take?
On mainstream cars, 60 to 120 minutes on site. Lock decoding or VIN cutting takes 20 to 40 minutes. Programming the first new key from scratch takes another 20 to 40 minutes. Cutting and pairing a second key (so you have a spare immediately) adds 10 to 20 minutes. Most owners get two keys done in a single visit because the marginal cost of the second key is low compared to coming back later.
- 07
What documentation do I need for an all-keys-lost call?
The vehicle title or registration to prove ownership, photo ID matching the registered owner, and the VIN (which the locksmith can also read from the dashboard plate). If you are not the registered owner (e.g. a household member registered in someone else's name), have the registered owner present or with phone authorisation. Locksmiths who skip the documentation check are a red flag, regardless of how convenient that feels in the moment.
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