How to add a new key – Volkswagen Golf MK5 (2006)
This is a complete step-by-step procedure for adding a new key to a Volkswagen Golf MK5 (2006) using a diagnostic tool. The guide is intended for DIY users and shows the real process used on this vehicle.
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Technical overview
| Item | Details |
|---|---|
| Vehicle | Volkswagen Golf MK5 (2006) |
| Applicable models | Golf MK5 (2005–2009) with the same immobilizer system |
| System | Immobilizer / Key programming |
| Difficulty | Medium |
| Time required | ~15 minutes |
| Prerequisites | All keys present, stable battery voltage |
Used tools
I’ve used Xtool D8s scan tool paired with key programmer Xtool KC100.
How to Add a New Key to a VW Golf Mk5 (Step-by-Step Summary)
- Buy a blank key
Order a compatible blank key (with remote and transponder). Cheap aftermarket keys work fine.
Buy blank key on aliexpress: ➡️Key: https://s.click.aliexpress.com/e/_c3pjThZd
(key number: 1K0 959 753 G) - Cut the key blade
Visit a locksmith and have the blade cut to match your original key.
After this step, the key will:- Unlock/lock doors mechanically
- Turn the ignition
- Not start the engine (immobilizer active)
- Prepare diagnostic & key programming tools
Connect your diagnostic tool and external key programmer. Enter immobilizer / special functions for Volkswagen and select the correct Golf Mk5 instrument cluster. - Read immobilizer data
Read immobilizer (IMMO) data from the cluster. If EPROM read fails, IMMO data read is usually sufficient. - Create a “dealer key” (pre-programming)
Place the new key into the programmer coil and generate a dealer key.
At this stage, the key is pre-programmed but still won’t start the car. - Add the key to the car (final pairing)
Use the “Add key directly” function and follow on-screen instructions.
After completion:- Immobilizer warning light disappears
- Engine starts normally
- Key is fully paired
- Clear fault codes
Scan the vehicle and clear all DTCs caused by earlier start attempts with an unrecognized key. - Program the remote control (central locking)
- Enter Module 46 – Comfort System
- Go to Adaptation → Channel 00 (reset all remotes)
- Set the number of keys (e.g. 2)
- Within 15 seconds, insert each key and press any remote button
- Turn signals flash = remote successfully programmed
Video tutorial
The video below shows the real key programming procedure performed on a Volkswagen Golf MK5 (2006).
Additional Information & Compatibility Notes
Before using or purchasing any diagnostic tool for this procedure, always verify compatibility with your exact vehicle model, year and system configuration. Supported functions may vary depending on software version, hardware revision and regional limitations.
Alternative tools
- XTool IP900BT + XTool KC100
- Best OBD2 scanners for key programming
Related guides & background information
Legal & safety notice
Key programming and immobilizer-related procedures may be restricted in certain countries and should only be performed on vehicles you legally own or are authorized to service. Always verify local regulations before carrying out immobilizer programming.
Ensure stable battery voltage (ideally use a battery charger or maintainer) before starting the procedure. Do not disconnect the diagnostic tool, turn off ignition, or interrupt the programming process while immobilizer data is being read or written, as this may result in immobilizer lockout or a non-start condition.
If unsure about the immobilizer generation, transponder type or tool compatibility, confirm these details before proceeding. Incorrect programming may disable existing keys and require additional reprogramming.
Proceed carefully and at your own responsibility.
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