Transponder Key Programming Gold Coast | Chip Keys

Why your key turns but the car won't start

Almost every car built from about 1995 onwards has a factory immobiliser. It was brought in to kill hot-wiring, and it worked — car theft fell off a cliff because of it.

There's a small chip — the transponder — moulded into the plastic head of your key. It has no battery. When you put the key in the ignition, a coil around the barrel wakes the chip up with a short burst of radio energy, and the chip answers back with a unique code.

The car's computer checks that code against the ones it has stored. Match, and it releases the fuel and ignition. No match, and the engine will crank or fire briefly and die, or not fire at all — and you'll usually see a small key or car symbol flashing on the dash.

So a key that turns the barrel is only doing half the job. The metal blade operates the lock. The chip starts the engine. They're two separate things and they fail separately.

Which fault have you got?

If you're not sure which one you've got, ring and describe it. Ian has heard all of these before and he'll tell you if it isn't a locksmith job.

What's happening	Usually means	Who fixes it
Key turns, engine cranks but won't fire, immobiliser light flashing	Chip not being recognised	Locksmith
Key turns, absolutely nothing happens, no dash lights	Flat battery or ignition switch	Mechanic / auto electrician
Starts fine with one key, not with the other	That key's chip has failed or lost its programming	Locksmith
Started fine yesterday, nothing today, same key	Chip failure, or the car has dropped its stored codes	Locksmith — ring first
Car starts but the remote won't lock the doors	Remote or fob fault, not the transponder	Locksmith
Key won't physically turn in the barrel	Worn key or a failing ignition barrel	Locksmith
Recently had a hardware-store copy cut, and it won't start the car	It was cut but never programmed	Locksmith

Programming and cloning are not the same thing

Worth knowing before you pay anyone, because plenty of operators do one and call it the other.

Cloning copies the code off your existing chip onto a blank chip. The car can't tell the two apart. It's quick and it works — but because the car only ever knows one code, you can't delete a lost key. If a cloned key goes missing, the only way to lock it out is to change the codes on the whole vehicle.

Programming registers a genuinely new code into the car's own memory. It takes longer and it needs the right equipment, but the car now knows each key separately — which means a lost or stolen key can be deleted while your remaining keys keep working.

Spare key, all your existing keys accounted for → cloning is usually fine and usually cheaper
A key has been lost or stolen → programme it properly and delete the missing one. Cloning here leaves a working key out in the world.

Ian will tell you which one your situation calls for. If cloning does the job he'll say so rather than charging you for the longer route.

"I had one cut and it still won't start"

This is a weekly phone call.

A key kiosk or hardware store cuts the blade. That's it. The blade will open the door and turn in the ignition, and the car will not start, because nothing has been programmed into the immobiliser.

You haven't been ripped off exactly — you bought a cut key and you got a cut key. It just isn't a car key yet. Ian can programme the chip in the head of the one you've already had cut, provided it's the right type of blank, which is usually cheaper than starting again.

Bring it out and he'll have a look.

What Ian can do at the car

Programme a new transponder key from scratch
Programme a spare while you've still got a working key
Clone an existing chip where that's the right answer
Delete lost or stolen keys from the car's memory
Reprogram a key that's stopped being recognised
Programme the chip into a blade someone else has already cut
Supply and code remotes and fobs
Repair or replace a worn ignition barrel

Where every key is lost on certain older Toyota, Lexus and Honda models, the normal programming route via the OBD port doesn't work at all — that job needs an ECU reflash.

Check the model list →

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Ian's been doing this since the chips arrived

Transponder immobilisers turned up in the Queensland market in the mid-90s and Ian has worked on them the whole way through — which matters most on older vehicles, where the programming route is often the one nobody supports anymore and the dealer's answer is a shrug or a new module.

Makes covered: Holden, Ford, Toyota, Subaru, Lexus, Mazda, Mitsubishi and most other common makes.

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Transponder key pricing

Programme a spare (working key present)Confirm: price
Clone an existing chipConfirm: price
New transponder key, all keys lostConfirm: price
Reprogram a key that's stopped workingConfirm: price
Programme a chip into a blade you already have cutConfirm: price
Delete a lost key from the car's memoryConfirm: price
Remote / fob supplied and codedConfirm: price

Prices vary by vehicle. Make, model and year gets you a real number.

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“Absolutely brilliant service. Had our spare car keys stolen — they chased up replacements in quick time, then travelled outside their normal service area to reach us on holidays. Cannot recommend highly enough.”

Jamie O'Neil

“Absolute legend! Genuinely helped me over the phone without making a cent for himself — saving me a potential $500. Will definitely recommend to anyone in need.”

Mick Barnao

“Highly recommend this business. Excellent customer service, excellent knowledge and excellent work. Professional manner matches his high-quality work.”

Sara Bonham

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Not an emergency

Get a price on a chip key

Describe the symptom and give Ian the make, model and year — he'll tell you whether it's a locksmith job before you pay anyone.

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Transponder key questions

Does my car have a transponder key?

Almost certainly, if it was built from around 1995 on. If the key has a plastic head rather than being plain metal, that's usually where the chip lives.

Can a transponder key be programmed at the car, or does it go to a dealer?

At the car, in nearly every case. That's the whole point of a mobile workshop.

How long does programming take?

Typically under an hour once Ian's there, depending on the vehicle and how many keys are being done.

Does the chip have a battery?

No. The transponder is powered by the coil around the ignition barrel. If your key has buttons, those run on a battery — but the chip doesn't, so a flat remote battery won't stop the car starting.

My remote stopped working but the car still starts. Why?

Because they're two separate systems. The remote runs on a battery and talks to the central locking; the chip is passive and talks to the immobiliser. A flat remote battery is a common and cheap fix.

Can you delete a stolen key?

Yes on most vehicles, provided the key was programmed rather than cloned. That is the reason the distinction between programming and cloning matters.

Will programming a new key wipe my existing ones?

On some vehicles, programming a new key requires all keys to be re-registered, so bring every key you've got to the appointment. Ian will tell you when you ring whether yours is one of those.

Do I need to prove the car is mine?

Yes — photo ID plus rego papers or something linking you to the vehicle.

Transponder Key Programming — Gold Coast