Audi Key Replacement: Spare Keys, Fob Compatibility and Quotes

An Audi spare-key quote should identify more than a fob that looks right. It needs to match the vehicle, its fitted functions and the work required. A car with one reliable key is also a different service request from a car with none.

Use this guide to compare replacement options before buying hardware. If you have already lost the last working key, go to the lost Audi key guide for the support checks and booking steps.

Decide which problem you are trying to solve

Adding a spare: Keep the working key available and confirm that the proposed service is an additional-key job for the exact vehicle. Do not assume support for a spare also means support when every key is missing.

Replacing a damaged fob: Explain whether it still starts the engine, whether the buttons respond and whether the case or blade is damaged. Diagnosis may be needed before deciding which parts must be replaced.

Replacing a key that no longer starts the car: A new fob is not automatically the answer. Report warning messages, vehicle battery problems and any other known fault so the provider can separate key replacement from diagnosis.

No working key remains: Select the all-keys-lost service and check the restrictions below before booking.

Check service availability before comparing prices

Koala does not currently offer all-keys-lost service for:

• Audi A4, A5, Q7, SQ7 and TT from model year 2018 onward.
• Any Audi from model year 2022 onward.

Contact the Audi dealer for those all-keys-lost cases. Spare-key service is a separate request and must be checked by exact model and year while a working key remains. These are Koala's service limits; they are not a universal timeline of Audi immobilizer technology.

Start with the model page for A4, Q5, Q7 or the full Audi catalog. Select the actual year rather than a nearby one. Model names alone do not establish the compatible key or the service available.

Understand what the replacement includes

A mechanical blade, electronic start authorization and remote access are separate functions. On a vehicle with a transponder key, a correctly cut blade does not by itself provide the electronic authorization needed to start. A smart fob may support additional convenience functions, depending on the fitted equipment.

Ask the provider to identify the correct part and functions for your Audi. The VIN, model year, build details, equipment and existing key information may be needed. Do not buy a part solely because its button count and case match the old one.

If a listing mentions KESSY, a platform code or an immobilizer generation, ask how that applies to your actual vehicle. A broad label does not establish compatibility. For a functional comparison, see Audi smart keys and transponder keys.

A current Audi price example

For the 2017 Audi A4, the calculator lists spare key $290–$380 and all keys lost $350–$455. The 2017 Audi A4 estimate opens that model year directly.

These are estimates for that vehicle selection, not prices for every A4 generation or every Audi. For A4, A5, Q7, SQ7 and TT from 2018 onward, the published spare-key estimate is $550–$715; all-keys-lost service is not offered. Other Audi models can have different pricing. Confirm the exact year, compatible hardware and service scope before booking.

Compare complete proposals

Confirm the required hardware, supported service, parts availability and timing. Check that the complete quote includes every agreed item before booking.

Check before buying a customer-supplied key

Contact the provider before ordering. Ask whether that particular key is accepted, whether it is compatible and what happens if it cannot be programmed. A previously used or incorrectly specified fob may not be suitable for the required procedure. An online seller's claim is not a substitute for confirmation from the person performing the work.

The same principle applies to a key with a damaged shell: ask whether the current electronics can be reused before ordering a new electronic key. Repairability depends on the condition of the part.

Book a supported Audi job in Jacksonville

For a spare, see key duplication; for replacement hardware, see key fob replacement. If a blade will not turn or is stuck, explain the ignition problem when requesting service.

Koala is mobile across Jacksonville and the Beaches. Call +1 (904) 515-9573 or request an estimate with your exact Audi model, year and number of working keys. We confirm service support, parts availability and an estimated arrival time before dispatch, and the complete price before work begins.