Locked Key in Audi A5 Cabriolet Boot: 3 Ways to Get In (and the Coding Fix)

ByKenji Alvarez

Your key is in the boot and you can’t open it. Here’s the order of play.

This exact scenario comes up more than you’d expect with the B8 Audi A5 Cabriolet (2009–2017). The combination of a boot-only key lock setting and a soft-top body that has no ski hatch or through-load option makes it genuinely awkward to resolve on your own. Three approaches, roughly in order of speed.

Step one: try the rear seat cabin handle

Officially, folding the A5 Cabriolet’s rear seatbacks forward requires a release lever inside the boot. But a number of owners have found the cabin-side handle at the top of each seatback works independently, without needing the boot lever at all. Give it a firm pull. If it gives, you’ll have a gap wide enough to reach through and retrieve the key.

It doesn’t work on every car. If the seatback stays locked solid, move straight to step two.

Step two: call Audi Assist before a private locksmith

In the UK, Audi Roadside Assistance is run through the AA and operates around the clock. If your cover is still active, they can dispatch a mobile locksmith at no charge to you. The current contact number is listed on the official Audi UK roadside assistance page. The technicians they send know the VAG platform, which matters when the job needs to be done without causing damage.

If your Audi Assist has lapsed, check your AA or RAC membership level before calling a private firm. Both services carry lockout kits, and some membership tiers include key-in-vehicle cover as standard. Worth a quick check before you commit to a callout fee.

Step three: specialist auto locksmith

A dedicated auto locksmith is not the same as a household locksmith. They carry tools designed specifically for vehicle openings and deal with this kind of job regularly. In the UK, checking for accreditation from the Master Locksmiths Association is a reasonable filter — the MLA vets and inspects its members. Response times in most towns and cities are typically fast.

Always ask for a quote before work starts. Costs vary by location and time of day, with out-of-hours callouts running noticeably higher. It’s also worth asking whether the locksmith has worked on VAG or German vehicles before — the boot mechanisms on B8 Audis have their quirks.

Why the Cabriolet is harder than the Coupe or Sportback

The A5 Coupe and Sportback both offer some rear access to the boot area — either a ski hatch or split-folding rear seats that can be released from the cabin. The Cabriolet gives that up entirely. The folding roof mechanism sits directly behind the rear seat area, which means the boot is a completely sealed compartment. Carbuyer puts the Cabriolet’s boot at 380 litres with the roof up — fine for a convertible, but completely cut off from the interior once the lid is shut.

The boot lock coding is a separate problem. On B8-platform Audis, the default behaviour is for the central locking button on the door handle to also release the boot. That setting can be changed through VCDS or Carista — sometimes deliberately for added security, sometimes by accident during a coding session. Once changed, the physical key is the only way in. That’s the trap the original poster walked into, and it’s common enough that forums have threads on it going back years.

Fixing the setting once you have the key back

With Carista (iOS or Android, OBD-II dongle required) or VCDS, recoding the boot unlock behaviour is a short job. Open the central locking module in the coding section and look for the boot lid unlock option. Setting it back to open with the central locking button restores normal operation and means you won’t need the physical key for every boot opening.

One alternative worth knowing about: some owners set the boot to open on the second press of the unlock button rather than the first. It keeps a small security advantage without requiring the physical key every time — and prevents accidentally popping the boot when you just want to unlock the doors.

Sources


Similar Posts