Key stolen? The 24-hour plan

Updated 1 July 2026 · 4-minute read

Hour 0 — right now: secure the car

If the car is parked in a public place or on a quiet street, move it somewhere safer: a well-lit car park, your driveway if that's where it is, a petrol station forecourt, or anywhere with CCTV. Don't leave the keys in the ignition if they're in the car (and don't reach for them — assume the thief is watching). The priority is to remove the opportunity.

Hour 0–1: report to police

Call 101 (non-emergency) to report the key theft. Tell them:

• When and where the key was stolen (date, time, location)
• How it was stolen (pickpocket, burglary, mugging, lost)
• What kind of key (basic, fob, keyless)
• Vehicle make, model, registration
• Where the car is now

You'll get a crime reference number on the phone. Write it down — your insurer will ask for it.

If the theft was violent, threatening or in progress, call 999 instead.

Hour 1: call your insurer

Find your policy number (in your documents, app, or on your renewal email). Call the claims line. Tell them:

• Policy number
• Crime reference number (from step 1)
• Vehicle registration and where it is now
• Brief description: "Car key stolen. Vehicle is secure, not taken. I want to claim for key replacement."

They'll open a claim, give you a claim reference, and confirm what's covered. Most will pay for the locksmith invoice, the new key, and (if applicable) lock changes. Some cover onward travel and accommodation.

Hour 1–4: call a locksmith

Call us on 07803 473728 (24/7) to:

1. Get the stolen key deleted from the car's immobiliser and central locking — this is the critical step. The old key becomes useless, even if cloned.
2. Cut and program a new key on the spot.
3. If it's a master key that opens more than one car (some manufacturers), discuss whether the other vehicle needs the same treatment.

Time matters. The sooner the old key is deleted, the less window a thief has to act.

Hour 4–24: protect your home and the new key

• Change the locks on your front door if the stolen key had your home address on a keyring. (Or at least be aware that a thief who stole your car key may also have your home address.)
• Cancel any valet parking accounts linked to the vehicle.
• Place the new spare key in a Faraday pouch in a non-obvious place at home — not the hallway table, not a drawer near the front door. Bedroom is best.
• Consider an aftermarket immobiliser (CanPhantom, Ghost, etc.) so a cloned key alone won't start the car. We install these mobile across North Wales.
• Update your DVLA record if your address has changed (your key may have had the old address attached via a delivery slip or parking pass).

What the locksmith actually does at the car

1. Connects a diagnostic tool (Autel, XTOOL, or dealer-grade for VAG/BMW) to the OBD port.
2. Reads the vehicle's immobiliser data — the list of currently paired keys.
3. Deletes the stolen key from the list.
4. Adds the new key — either from a working original or generated from scratch if all keys are gone.
5. Tests the new key for start, lock/unlock, and (if applicable) remote-start functions.
6. Provides an itemised invoice for your insurance claim.

For most modern cars this takes 30–60 minutes. Some older cars take 10 minutes. A few high-security systems (BMW CAS4+, Mercedes FBS4, latest Audi MIB3) take 90 minutes. The locksmith will tell you on the phone.

Cost in 2026

Typical North Wales prices for a stolen-key replacement:

• Older car (2005–2015): £120–£180 — delete + 1 new key.
• Modern car (2016–2020): £180–£260 — delete + 1 new key + coding.
• Premium / keyless (BMW, Merc, Audi 2017+): £220–£400 — full diagnostic + new key + secure pairing.
• No working key at all (total loss): add £80–£150 — additional diagnostic time to extract the immobiliser data from the vehicle first.

Common mistakes to avoid

1. Waiting until the morning. Many thefts happen the same night. The first 24 hours are critical.
2. Not getting a police reference number. This is the single most common reason claims get reduced. Call 101 the same day.
3. Just programming a new key without deleting the old one. The stolen key will still start the car. Always ask the locksmith explicitly: "Are you deleting the stolen key from the immobiliser, or just adding a new one?"
4. Not telling the insurer for weeks. Most policies require notification within 24–48 hours. Late claims are reduced or declined.
5. Storing the new spare key near the front door. If they stole the original, they may have seen where you keep your keys. Move the new one.

Special cases

Work keys: if the stolen key was a work vehicle, tell your employer immediately. They'll need to inform their insurer and may have a procedure for re-coding.

Spare key was with the stolen set: if the thief took both the main key AND the spare, the car is genuinely un-driveable until a locksmith attends. This is a 999-style emergency response from us — we prioritise these calls.

Key taken during a burglary: the key was probably taken along with car keys, wallet, phone. Replace the locks on your front door too. Your home insurance may cover this under "replacement locks after burglary".

Vehicle was also taken: the priorities change. North Wales Police (999) take over the scene. You do the above steps after the vehicle is recovered.

How North Wales Police can help

North Wales Police have a vehicle crime team and use ANPR (automatic number plate recognition) across the region. If your car is taken, the ANPR cameras at Welsh border crossings, ferry terminals and major routes can pick it up. Give them the registration and they'll add it to the watch list immediately. The crime reference number ties your report into the wider investigation.

Stolen key right now? Call 07803 473728 — we can be in your drive in 20–45 minutes anywhere on the North Wales coast, deleting the stolen key and cutting you a fresh one on the spot.