Australian owned · OBD anti-theft
Modern thieves don't smash windows. They plug into your OBD port and clone your key in 60 seconds. OBD Shield PRO stops them dead.
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Most popular
choose your protection
One-time price. Free AU shipping. 30-day money-back guarantee.
how it works
OBD Shield PRO re-pins your OBD-II port so any scanner gets nothing — while your included adapter restores full diagnostics instantly.
Follow the included guide to swap a few wires in your OBD-II port — about 10 minutes, no special tools.
Any scanner or key-programmer now returns nothing — the ECU won't talk without your adapter.
Plug in the included adapter any time for full diagnostics. 100% passive — nothing to power or fail.
the hardware
Relay boxes and key-programmers all rely on the OBD-II port. OBD Shield PRO re-pins that port so they get nothing — while your adapter keeps full access.
what's in the box
this takes under 60 seconds
Relay boxes and OBD key-programmers are cheap, silent, and everywhere. A thief plugs into your port, clones a key, and drives off before you wake up.
do the maths
Even when insurance pays, you don't get away clean. Enter your details — this is what one stolen car costs before the payout arrives.
Figures are yours to adjust — defaults are typical, not a quote.
Excess + 3 years of higher premiums — before the hassle.
how we compare
Every other option either misses the attack, costs forever, or can be hacked.
| OBD Shield PROBest | Wireless OBD dongle | GPS tracker | Steering lock | Factory alarm |
|
|---|---|---|---|---|---|
| Blocks OBD key-cloning | ✓ Yes | ✕ | ✕ | ✕ | ✕ |
| Stops theft (vs just reporting it) | ✓ Prevents | ✕ | Tracks after | Slows | Alerts only |
| Can't be hacked | ✓ No electronics | ✕ All 77 tested had flaws | ✕ | N/A | ✕ |
| Collects zero data | ✓ Nothing | ✕ Often tracks you | ✕ Always tracks | N/A | N/A |
| Battery drain | ✓ Zero | Yes | Yes | None | Minimal |
| Ongoing cost | ✓ None — one payment | Some | ✕ Subscription | None | None |
| Price | — once | $30–150 | $150 + ~$150/yr | $50–120 | Included |
Competitor prices are typical AU market ranges and vary by retailer.
security by design
Researchers tested 77 wireless OBD dongles — every one had security flaws. OBD Shield PRO is purely mechanical: no chip, no signal, no data.
USENIX "Plug-N-Pwned" study — all 77 dongles tested had at least two vulnerabilities
not all security stops OBD theft
| OBD Shield PROBest | Steering lock | GPS tracker | Factory alarm | Do nothing |
|
|---|---|---|---|---|---|
| Blocks OBD / mouse-jacking access | |||||
| Stops theft before it starts | Slows | Alerts | |||
| No monthly subscription | |||||
| One-time cost | |||||
| Fully reversible, no warranty impact | Wiring | ||||
| Works on OBD-II vehicles (US 1996+, AU/EU 2006+) | Varies | Varies | |||
| Can't be defeated in seconds | Cut | Yanked |
why owners choose it
Steering locks and alarms don't stop a thief plugging into the OBD port. This removes the access point they actually use.
100% passive — no battery, no app, no firmware, no subscription. Fit it once and forget it.
Your included adapter restores complete diagnostics in seconds, so servicing is unaffected.
Install it, hand your keys to any auto-electrician and ask them to pull a code from your OBD port. If they can, send it back within 30 days for a full refund — and keep the warning stickers. We'd rather eat the cost than have you find out the hard way.
Backed by a 2-year hardware warranty — double the 1-year industry standard — and no subscription, ever.
Protect My Cargood to know
OBD Shield PRO works on any OBD-II compliant vehicle — US-spec from 1996, and AU/EU from 2006 onward. If it's not right for you, return it within 30 days.
You re-pin your OBD-II port using the included guide (about 10 minutes). After that, any scanner or key-programmer plugged into the port gets no ECU communication — so thieves can't read or clone a key. Your included adapter restores the normal pinout whenever you need diagnostics.
Yes. Plug in the included OBD Shield PRO adapter and full diagnostics are restored instantly — hand it to your mechanic when needed.
No. It's 100% passive — no power draw, no electronics to fail, and it doesn't interfere with your vehicle's own systems. The change is fully reversible.
Yes. The protection is at the OBD-II port, which every modern vehicle uses for diagnostics — including keyless and push-button-start cars. Thieves target that port regardless of how you start the car.
Yes. It's a passive modification to your own vehicle's diagnostic port and doesn't alter emissions, safety, or driving systems. Diagnostics remain fully available to you and your mechanic via the included adapter.
Hand over the adapter and the new owner keeps full access, or reverse the re-pinning in minutes using the guide. Either way, nothing is permanent.
1× OBD Shield PRO adapter, 1× quick installation guide, 2× security warning stickers, and a storage pouch.
30-day money-back guarantee plus a 2-year hardware warranty.
Take 10% off your first order. Use code SHIELD10 at checkout.