24/7 Mazda Locksmith Dorset, Hampshire, Salisbury

Auto Locksmith Specialists works across the full Mazda range — Mazda2, Mazda3 and Mazda6, the MX-5, the CX-3, CX-30, CX-5, CX-60 and CX-80, and older models including the Mazda5, CX-7 and RX-8. That covers several different key types. Earlier cars use a plain blade or flip key on the MAZ24 or MAZ24R profile with a transponder in the head. The 2004–2011 RX-8 and some MX-5s of the same period use the flat card-style advanced key. Current Mazdas use a smart key fob with Advanced Keyless Entry and push-button start. We cut and programme replacements on-site, at the roadside or on your drive, without the car going to a Mazda dealership.

Coding a key to the immobiliser

Every Mazda key with a transponder has to be coded to the car's immobiliser, not just cut. Older Mazdas commonly use a Texas 4D-63 80-bit transponder; from around 2015 the range moved to the ID49 Hitag Pro chip, shared with Ford. Coding a new key means gaining security access to the immobiliser using data tied to the vehicle's VIN. A Mazda will hold several registered keys, and there is an on-board registration procedure — but it only works if you already have two keys that start the car. With one key, or none, it needs proper diagnostic equipment. We carry it.

Locked out, or a worn ignition

Mazda smart keys contain an auxiliary blade, and on most smart-key models there is one hidden lock cylinder behind the driver's door handle — driver's door only, and it takes an awkward angle. If that blade is inside the car with everything else, we use non-destructive entry and leave the door frame, glass and trim as we found them. Worn ignition barrels are a regular Mazda call-out on higher-mileage Mazda3, Mazda5 and Mazda6 models: the tumblers wear, the key turns stiffly, then one day it won't turn at all. We repair or replace the barrel and match it to your existing key where the model allows.

Key-not-detected faults and all keys lost

A red KEY warning light with "Key Not Detected" or "Low Key Fob Battery" is the other common one. Sometimes it is just the fob battery — Mazda's own workaround is to press the brake and hold the fob against the start button. Sometimes it is water ingress, a damaged fob or lost programming. We diagnose it on-site. All-keys-lost is handled too: we generate and code a new key from the vehicle's own data, with no working key needed. All Mazda models, across Dorset, Hampshire and Salisbury, 24 hours a day.