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Lost Car Key Replacement in St Albans Without the Original
Herts Car Keys replaces lost car keys in St Albans without the original key. Darius makes a new key from the vehicle itself and programs it at the roadside, at a home or at a workplace. For supported vehicles the car stays where it is. The typical response is around 30 minutes.
- £120Car keys start from
- 30 minTypical response
- 12 monthsWarranty on every key
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- Over 7,000jobs completed
- 5.0from 130+ Google reviews
- SERMI approvedDBS checked and fully insured
- 12 month warrantyon every key
What Lost Car Key Replacement Covers
Lost car key replacement is the making of a new key for a vehicle when no working key remains. The trade name for the job is all keys lost. Herts Car Keys takes on the job for cars, vans and light commercial vehicles when a key is lost, stolen or shut away with no spare.
The new key is supplied in the same way as any car key replacement, with one difference. No working key exists to copy, so the key is made from the vehicle itself.
With no key to copy, the job starts at the vehicle. Darius reads the key data from the vehicle itself, cuts a blade to that pattern and programs a new chip to the immobiliser through the diagnostic port. The job covers standard keys, transponder keys, remote keys and smart keys, and for supported vehicles the whole job is finished at the roadside.
A lost key job takes longer than a spare key, because the vehicle has to be opened, the lock or the key data has to be read, and the immobiliser has to accept a key it has never seen. Darius states the time at the vehicle with the price.
Lost Car Key Replacement in 4 Steps
Darius replaces a lost car key in four steps.
Open the vehicle with non-destructive entry methods when it is locked.
Cut a new blade for the locks of the vehicle.
Program the new key to the immobiliser where the key carries a chip.
Test the locking and starting functions of the new key with the driver.
Where a Car Key Is Lost Changes the Job
A lost car key reaches Herts Car Keys in three situations, and each one is handled at the vehicle.
Lost at Home
The car stands on the drive or in a garage and goes nowhere. Darius comes to the home, opens the car where it is locked and makes the new key there.
Lost Away From Home
The car stands in a car park, at a workplace or at the roadside. The new key is made at that spot, so the car is driven home instead of recovered.
Lost With the Car Locked
The car is locked with no way in. Non-destructive entry opens the door first, then the new key is made and tested.
First Steps After a Car Key Is Lost
Four checks come before a lost car key is replaced.
- Check coats, bags and the last place the key was used.
- Look for the spare key before a new key is ordered.
- Read the car insurance policy for key cover.
- Call Herts Car Keys with the make, the model, the year and the location of the vehicle.
Lost Smart Keys and Keyless Cars
A lost smart key is replaced in the same way as a lost transponder key, with one extra step. The smart key system has to register the new key for keyless entry and keyless start, as well as for the immobiliser. For supported vehicles Darius registers the new smart key at the vehicle, cuts the emergency blade inside it and tests the keyless functions at the doors and at the start button.
A keyless car with every key lost stays locked until the door is opened with non-destructive entry. The door lock on a keyless car is often hidden behind a cap on the handle, and Darius opens it without damage to the cap or the handle.
Lost Car Key Replacement Prices
Car keys from Herts Car Keys start from £120. A lost car key costs more to replace than a spare key, because the key is made when every key is lost and no key exists to copy. The exact price depends on the make, the model year and the key type, and Darius confirms it before work starts.
- Car keys start from£120
- Typical response30 min
- Warranty on every key12 months
- Exact price confirmedBefore work
Lost and Stolen Car Keys
A stolen car key is a security risk as well as a missing key, because the stolen key still starts the car. Report a stolen key to the police and to the insurer. Tell Darius that the key was stolen when the lost key job is booked.
A stolen key is treated as a security job as well as a key job. The insurer is told before the new key is made, because many car insurance policies include key cover and some insurers set out their own steps. Darius is told that the key was stolen on the call, so that the job is planned with the security of the vehicle in mind.
Response Time for Lost Car Keys
The typical response to a lost car key in St Albans is around 30 minutes. Darius travels from Welwyn Garden City, so the time depends on traffic and the location of the vehicle.
The service runs 24 hours a day, 7 days a week. It covers St Albans city centre, Fleetville, Marshalswick, Sandridge, Colney Heath and Bricket Wood, and towns within around 15 miles of Welwyn Garden City.
The time at the vehicle depends on the make, the model year and the key type. A plain transponder key for an older car is made faster than a smart key for a recent car, because the immobiliser systems differ in how they accept a new key. Darius states the expected time at the vehicle when he confirms the price.
Darius Handles Each Lost Key Job
Darius is the owner of Herts Car Keys and the locksmith on every lost key job. He has six years in the trade and has completed over 7,000 car key and lockout jobs.
SERMI Approved, DBS Checked and Fully Insured
Herts Car Keys holds approval under the SERMI scheme, which gives an independent locksmith a recognised route to manufacturer security data for the makes that take part. Darius holds a DBS check and carries full insurance for work on customer vehicles.
12 Month Warranty on Every Key
Every key supplied by Herts Car Keys carries a 12 month warranty.

Recent Lost Car Key Job by Herts Car Keys
Every key was lost for a 2018 Skoda Karoq in this job.
Call Herts Car Keys About a Lost Car Key
A lost car key in St Albans is replaced at any hour. Call 07308 888825 or send a WhatsApp message with the make, the model, the year and the location, and Darius confirms the price before he sets off.
Spare Keys, Programming and Emergency Help
Three pages sit next to lost car key replacement.
A spare car key is the opposite job. It is copied from a working key before the last key is lost, and it costs less.
Car key programming pairs the chip in the new key with the immobiliser of the vehicle.
The emergency auto locksmith line takes lost car key calls from the roadside 24 hours a day.
Car Makes Covered for Lost Keys
Herts Car Keys replaces lost car keys for most car makes. Each of the makes Darius works on most has a page that covers its keys. Tesla is not covered at present, and Mercedes replacement key work is limited to supported models up to 2015.
Frequently Asked Questions
Call 07308 888825Can you replace lost car keys for all makes and models?
Herts Car Keys replaces lost car keys for most car makes. Tesla is not covered at present, and Mercedes replacement key work is limited to supported models up to 2015.
How long does it take to replace lost car keys?
The typical response is around 30 minutes. The time at the vehicle depends on the make and the key type, and Darius states it with the price.
Do you provide mobile lost key replacement in St Albans?
Yes. Herts Car Keys is a mobile service, and the new key is normally made at the vehicle, at the roadside, at a home or at a workplace.
Can you replace lost smart keys and keyless entry fobs?
Yes. For supported vehicles, smart keys and keyless entry fobs are programmed to the vehicle with tools such as Smart Pro, Autel and Lonsdor.
Is your service available in emergencies?
Yes. Herts Car Keys is open 24 hours a day, 7 days a week, including nights and weekends.
Do you provide spare key cutting after a lost key incident?
Yes. A spare key is made alongside the replacement key when the driver asks for one.
Are your locksmiths certified and experienced?
Herts Car Keys has one locksmith, Darius. He is SERMI approved, DBS checked and fully insured, with six years in the trade and over 7,000 jobs completed.
How much does it cost to replace a lost car key?
Car keys from Herts Car Keys start from £120, and a lost car key costs more to replace than a spare key. The guide to replacement car key cost explains what changes the price.
What should I do if I lose my car keys?
Check the last place the key was used, look for the spare key and read the insurance policy for key cover. Then call an auto locksmith with the make, the model, the year and the location of the vehicle.
Can a lost car key be replaced without the original?
Yes. The new key is made from the vehicle itself, so no original key is copied.
What is checked before a lost car key is replaced?
Darius checks identification and proof that the customer is entitled to a key for the vehicle before work starts.
Is a new ignition required when a car key is lost?
No. The new key is cut to the existing locks and the existing ignition, so the locks stay as they are and the new key works in them.
Can a lost car key be replaced the same day?
Yes. For supported vehicles the new key is made at the vehicle on the same visit, and the typical response to St Albans is around 30 minutes.