Losing your car keys on the Sunshine Coast is more complicated than it used to be. The days of a simple metal key that any hardware store could copy in two minutes are largely over. Modern vehicles use transponder chips, rolling-code remotes, smart proximity keys and push-button ignitions — and replacing any of them requires specialist equipment. Here's everything you need to know before you call.
The Four Types of Car Keys
Understanding what type of key your vehicle uses is the first step to understanding what replacement will involve and cost.
1. Traditional Metal Key
Basic cut metal keys with no electronics. These were common on vehicles up to the mid-1990s and some budget models into the early 2000s. They can be cut from a key profile or from the vehicle's key code. If you have a working spare, any locksmith can copy it. If you have no key at all, the locksmith decodes the lock and cuts to code — straightforward and relatively cheap.
2. Transponder Key
The most common type on vehicles from the late 1990s onwards. The key has a microchip embedded in the plastic head. When you insert the key and turn the ignition, the car's immobiliser system sends a signal to the chip; if the chip responds with the correct code, the engine starts. Without the correct transponder code, the engine will crank but not fire. Cutting the metal blade is not enough — the chip must also be programmed to match your specific vehicle.
3. Remote Key Fob
A transponder key combined with a remote control for central locking. Extremely common from the mid-2000s. The blade transponder and the remote functions both need to be set up. If just the remote stops working (flat battery, water damage), the transponder portion often still functions and only the remote needs to be reprogrammed or the battery replaced — much cheaper than a full replacement.
4. Smart Key / Proximity Key
No blade at all — the car detects the key in your pocket or bag and allows push-button start. Common on vehicles from roughly 2010 onwards and now standard on most new cars. These are the most expensive to replace because the physical housing, the electronics, and the push-start pairing all need to be set up simultaneously. Some vehicles also require the old key to be present during programming to delete it from the system — which creates complications when the key is completely lost.
Not sure what type of key you have? Tell us your vehicle's make, model and year when you call. We can usually identify the key type and give you an accurate quote from that information alone.
How Transponder Programming Works
Transponder programming is the process of telling a vehicle's immobiliser system to recognise a new key. There are two main methods:
- On-board programming (OBP): Using the vehicle's own programming sequence (often involving inserting a working key and following a specific procedure). This only works if you still have at least one working key.
- Diagnostic programming: Using a specialist OBD-II diagnostic tool connected to the vehicle's data port. This can add keys even when no working key exists. Different vehicle brands require different software — a tool that works on Toyota won't necessarily work on BMW or Ford.
CoastAll carries professional-grade programming equipment covering a wide range of makes common to the Sunshine Coast market — Toyota, Mazda, Hyundai, Kia, Ford, Holden/GM, Honda, Subaru, Mitsubishi and more. For European and prestige marques (BMW, Mercedes, Audi, Volkswagen), we can advise on a case-by-case basis.
Locksmith vs Dealership — Cost and Time Comparison
The dealership is often the first place people think of for car key replacement. It's worth understanding the real differences:
| Factor | Automotive Locksmith | Dealership |
|---|---|---|
| Typical turnaround | Same day, often within 2 hours | 1–5 business days (parts sourced) |
| Transponder key (common makes) | $250–$400 | $400–$700+ |
| Smart key / proximity key | $350–$600 | $600–$1,200+ |
| Remote programming only | $80–$150 | $150–$300 |
| Will come to your location | Yes — mobile service | Vehicle must be towed in |
| Proof of ownership required | Yes | Yes |
The dealership has one real advantage: they have direct access to your vehicle's factory key codes and OEM key blanks. For very new or unusual vehicles, or where the locksmith's software doesn't support the model, the dealership may be the only option. A good automotive locksmith will tell you honestly if they can't do your vehicle, rather than guess.
What Information You'll Need to Provide
Before we can supply and program a replacement key, we need to verify a few things. Have the following ready:
- Vehicle Identification Number (VIN): Found on the dashboard (visible through the windscreen, driver's side), on the door jamb sticker, or on your registration papers. The VIN lets us source the correct key blank and in some cases retrieve the key code.
- Proof of ownership: Queensland registration certificate, insurance papers in your name, or a purchase receipt. We are legally required to verify you own the vehicle before cutting and programming a key.
- Photo ID: Driver's licence matching the registered owner details.
- Make, model and year: Helps us bring the right blank and programming equipment from the van.
If the car is registered to someone else (fleet vehicle, family member's car), we'll need written authorisation from the registered owner plus their contact details. This is for your protection and ours.
Can You Get a Spare Key Cut While We're There?
Yes — and we strongly recommend it. Having at least one spare key programmed at the same visit is significantly cheaper than a separate callout later. The labour for programming a second key at the same time is far less than the cost of a second service call. For most vehicles, having two working keys is also the safer setup for future programming needs, since many on-board programming procedures require a working key to be present.
A Note on Electric Vehicle Key Fobs
EVs like the Tesla Model 3 and Y, BYD Atto 3, and MG ZS EV use proximity/smart key systems, and in some cases (Tesla in particular) the vehicle is primarily controlled via a smartphone app with a physical card key as backup. Replacement card keys for Tesla are generally available from Tesla Service directly and aren't cut by locksmiths. For other EV brands, standard smart key programming procedures apply and we can assist with most models. Confirm with us before booking if your vehicle is electric.