Matt East of Inta-Lock replaces and programmes Mazda car keys in Leicester, at the place where the car is parked, for supported models.
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A Mazda starts only with a key that its immobiliser system recognises, so a new Mazda key is cut and then registered with the car. The work covers a lost key, a worn or broken key, a spare and a key the car has stopped accepting.
Matt is with you within the hour in Leicester, and the same day across Leicestershire. The phone is answered 24 hours a day, and a quote is agreed before work begins.
Five Mazda key jobs are attended at the car, and the method of each sits on its own service page.
Support for a given Mazda model and year is confirmed on the call, from the registration.
Five items on a Mazda and its key set shape the call, and each row states what Mazda owner manuals say and what to pass on.
| Mazda item or sign | What the Mazda owner manual states | What to do before the call | What to tell Matt |
|---|---|---|---|
| Key code number plate | A code number is stamped on a plate attached to the key set. The manual says to detach the plate and store it in a safe place away from the vehicle. | Look for the plate, or the written copy of the number, among the papers kept at home. | Whether the code number is held. Matt confirms on the call whether it is used for the car. |
| Auxiliary key | On equipped models a metal auxiliary key sits inside the transmitter and pulls out while the knob is pressed. | Check whether the auxiliary key is still with the remaining key set. | Whether the transmitter, the auxiliary key or both are missing. |
| Advanced keyless entry | On some models the doors and the liftgate or boot lid lock and unlock while the key is carried. | Note whether the Mazda starts from a button with the key in a pocket. | That the car uses a keyless key, along with the registration. |
| Security indicator light | When the engine does not start with the correct key and the light stays on or keeps flashing, the manual points to a fault in the immobiliser system. Where the light flashes continuously on the move, the manual says not to shut off the engine. | Watch what the light does when the ignition is switched on. | Whether the light stays lit, flashes or goes out, and whether the engine turns over. |
| Remaining keys | After a key is lost, the electronic codes of the remaining keys and the immobiliser system are reset, and a key that has not been reset does not start the vehicle. | Gather each remaining Mazda key and keep them with the car. | How many keys remain and how many are missing. |
The table gives the wording of Mazda owner manuals for recent models. Equipment differs between models and years, so the registration settles which rows apply to a given Mazda key.
A Mazda key cut and registered with the car, at the address where it is parked in Leicester.
Call Matt on 0116 442 2084Mazda owner manuals use four terms for the key. The key itself is a transmitter with lock and unlock buttons, and the auxiliary key is the metal blade stored inside it. The keyless entry system covers the remote buttons and starting the engine with the key left in a pocket or a bag. The advanced keyless entry system, fitted to some models, adds locking and unlocking while the key is carried.
The immobiliser system is the fourth term. Mazda states that it allows the engine to start only with a key the system recognises, and that each key carries a unique electronic code. A Mazda that cranks or stays silent with the correct key in the car, with the security indicator light lit or flashing, is a fault to diagnose before a key is replaced, which is the work set out under immobiliser diagnostics.
Advanced Diagnostics, Abrites, Autel, Xhorse and SPVG are used for automotive key programming and diagnostics. Which route applies to a Mazda key depends on the model, the year and the key system, and it is confirmed on the call.
Five steps take a Mazda key job from the first call to a tested key.
A quote is agreed before work begins.
Mazda key equipment differs by model and by model year, and Mazda marks the advanced keyless entry system as fitted to some models only. Mazda ranges sold in the United Kingdom in recent years include the Mazda2 and Mazda3 hatchbacks, the CX SUV family with the CX-30, CX-5 and CX-60, the MX-30 and the MX-5 sports car. Earlier Mazda cars are still driven as well.
No list of supported Mazda models is printed here. Matt identifies the car from the registration and confirms support for that Mazda key before he sets off.

A Mazda key job is taken, attended and finished by Matt East, the owner of Inta-Lock. Matt trained as a locksmith in 2011 and moved into automotive work, with key cutting and programming equipment, in 2019.
Local garages and main dealers have referred key work to him since 2021, and more than 1,000 jobs stand behind the Mazda key cut on the day.
Inta-lock Auto Locksmith Leicester, the Google listing of the business, holds 4.9 out of 5 from 51 Google reviews. The reviews appear below as customers wrote them, for car key work across makes.
View all Google reviewsEXCELLENT
Based on 51 reviews
Posted on Google![]()
Logan MaxTrustindex verifies that the original source of the review is Google.
Inta-lock Auto Locksmith in Leicester did a fantastic job with my Audi keys. The service was professional and efficient, and they sorted me out with a new key quickly. Competitive pricing and friendly service. Highly recommend them.Posted on Google![]()
Ian WrightTrustindex verifies that the original source of the review is Google.
Swiftly gave a quote, Turned up when he said. Replaced lock swiftly and had card payment organised. Very satisfied with work and efficient and polite service.Posted on Google![]()
Alan JohnsonTrustindex verifies that the original source of the review is Google.
Needed a spare key for our Mini - Matt’s response to our enquiry was very quick, concise and included all the information we needed. Matt was available to come to our house to do the work very quickly, arrived on time and carried it all out as agreed with no issues. Great customer servicePosted on Google![]()
Prakash GurungTrustindex verifies that the original source of the review is Google.
This guy swearingPosted on Google![]()
Santini BasraTrustindex verifies that the original source of the review is Google.
Matt was great, came and sorted out our issue very fast, was very friendly and really flexible. Would def work with him again.Posted on Google![]()
Abidur MasumTrustindex verifies that the original source of the review is Google.
Quick and Efficient. Highly recommend.Posted on Google![]()
Rachel TelferTrustindex verifies that the original source of the review is Google.
Matt looked after us brilliantly. A very efficient service, highly recommend.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
A Mazda key is made at the address where the car is parked, on a drive, in a works car park or at the roadside, in Leicester and across Leicestershire. Matt is with you within the hour in Leicester, and the same day across Leicestershire.
Three Mazda key situations hand their method to a service page, and four adjacent makes have key pages of their own.
A Mazda with no working key left is given a new key at the car on supported models, and the method is set out under lost car keys.
Where the vehicle supports it, missing electronic keys are removed from the immobiliser memory, so a lost Mazda key no longer starts the engine. A mechanical blade still turns a physical lock unless that lock is changed or rekeyed.
Mazda advises owners to keep a spare key in case one is lost. A second Mazda key is cut and registered while a working key is present, and that job belongs to the spare car keys service.
The owner manual of a recent Mazda model states that up to six keys work with the keyless functions of one vehicle, so a household with several drivers stays within the limit of the system.
Mazda key fob faults are handled under the car key fob repair service. Whether the remote is repaired or takes another route is confirmed after the fault is identified.
Mazda owner manuals link buttons that stop responding and a shorter working range to a weak key battery, and they describe a way to start the engine when the key battery is dead. A red KEY warning on the dashboard is a separate sign, and Matt asks about it on the call.
Toyota, Honda, Nissan and Suzuki are listed beside Mazda on the Car Makes hub, and each make has a key page of its own.
The code number plate is a small plate attached to a Mazda key set, with a code number stamped on it for use when a replacement key is made.
Mazda tells owners to detach it and keep it in a safe place away from the vehicle. Say on the call whether the number is held.
A security indicator light that stays on or keeps flashing when the engine does not start with the correct key points to a fault in the Mazda immobiliser system.
That is the wording of the Mazda owner manual. Tell Matt what the light does, because a system fault and a missing key are different jobs.
The remaining Mazda keys start the car after a lost key is dealt with only where they are reset together with the immobiliser system.
Mazda states that a key which has not been reset does not start the vehicle, so each remaining key is brought to the car for the visit.
The metal key, which Mazda calls the auxiliary key, sits inside the transmitter on equipped models and pulls out while the knob on the transmitter is pressed.
Say on the call whether the auxiliary key is still held when the transmitter is lost.
A red KEY warning on a Mazda dashboard shows that the keyless entry system has detected a problem, according to the owner manual of a recent model.
Report the warning on the call along with the registration, and the cause is identified at the car.
No, the connected services app Mazda supports offers remote door locking on equipped models and is not a car key.
It is managed through the connected services setup of Mazda, not cut or programmed as a physical key. Inta-Lock works on the physical key, the locks and the immobiliser.
Supported Mazda key work is carried out where the car stands in Leicester, at a home, a workplace or the roadside.
Matt confirms on the call whether the Mazda model and year is supported before he sets off.
Yes, a quote is agreed before work begins on a Mazda key.
The figure depends on the key system, the model, the year and how many keys remain, so no price list is published.
Have the registration and the remaining Mazda keys to hand, then call Matt.