Locked Keys in the Audi A5 Cabriolet Boot: What Actually Works
Why the A5 Cabriolet Is Harder Than It Looks
If you’ve locked your key inside the boot of a B8 Audi A5 Cabriolet (2009 to 2017), the usual tricks don’t apply. On the A5 Coupe and Sportback, rear seat release levers are accessible from inside the cabin — fold the seats and you can crawl through to the boot. On the Cabriolet, those levers are inside the boot itself. The soft top mechanism takes up the space that would otherwise allow a pass-through, so there’s no way in from the cabin side. You can’t reach the boot from the rear seat without the boot already being open.
Carista can change the boot locking setting, but needs the ignition on to connect. No key, no ignition. Loop closed.
Your Options, Ranked by Speed
1. Breakdown Cover — Try This First
If you’re an AA, RAC, or Green Flag member, call them before anything else. A key locked in the boot qualifies as a breakdown under most standard policies. You don’t need the car to have stopped running mechanically. A patrol will attend and attempt to open the boot lock. On some Audis with a fully deadlocked boot, general-purpose entry tools may not work, but it costs nothing extra under your membership and is often the fastest initial response. RAC members can reach someone on 0333 2000 999, or log the job via their app.
2. Mobile Auto Locksmith
The most reliable option with or without breakdown cover. An auto locksmith works directly on the boot lock cylinder — the same barrel the physical key goes into. A specialist with Audi or VAG vehicle experience can usually pick or manipulate the lock without damaging the car. Mobile locksmiths cover most UK cities and larger towns, including evenings and weekends.
When you call, ask if they have experience with Audi A5 or B8-platform vehicles. A locksmith who mainly works on domestic doors may struggle with a car lock.
3. Audi Roadside Assistance or Dealer
Viable if you have an active Audi Assistance plan. Without one, it tends to be slow and expensive. Dealers need the VIN to cut a key and typically require several days, and the cost is substantial. Not a first call.
Once You’re Back In: Fix the Setting
With your key in hand and the ignition on, open Carista and go to the boot or trunk locking options. Switch it away from “always locked.” Standard mode means the fob’s boot button works normally, with the physical key kept as a genuine backup rather than the only method.
Worth cutting a spare at this point too. For emergency boot access you don’t need a fully coded transponder key — a blade-cut spare that turns the barrel is enough. A locksmith can usually cut one from your original, and far faster than a dealer.
Why This Trips Up Cabriolet Owners Specifically
The “always locked boot” setting is a legitimate security feature, useful when leaving the car with a valet or in a public car park. On most cars, even with that setting active, the rear seats give you a fallback. The Cabriolet removes that fallback because the convertible roof mechanism physically occupies the space behind the rear seats.
Practicality reviews of the A5 Cabriolet do mention that the rear seats fold. What they don’t mention is that you can’t trigger them from inside the cabin — on the Cabriolet that’s done from inside the boot. That’s the detail that catches people off guard when it actually matters.