Opel Corsa C 2006 Key Programming steps with Opcom Iamcarhacker

By Juraj · Last updated August 15, 2026

This guide shows how to program a new transponder key to a Corsa C immobiliser using Opcom.

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Video: How to program a new key on a Corsa C with Opcom

This video shows how to check transponder status in the measuring blocks and program a new key to the immobiliser.

Supported vehicles

Vehicle
corsa-c

Technical overview

Vehicle	Opel Corsa C
Year	2006
System	Immobiliser-II
Procedure type	New transponder key programming
Difficulty	Easy
Time required	~ 15 min
Prerequisites	Opcom / VAUX-COM interface, valid security code, blank transponder key

Step-by-step procedure

Get the security code first

This is its own job, covered in a separate guide. [How to find the security code to Opel Immobiliser 2 system]

Check the current transponder status before programming anything

Opcom path: Special Functions > Immobiliser, then open Measuring Blocks.

The status field tells you what you're working with before you commit to a programming attempt:

💡Pro tip: What the transponder status actually means. "Correct TP-Key" means the key is already programmed and working. "Unknown key" means the chip itself is fine, it's just not programmed yet, this is what a fresh blank key shows. "Invalid" or "does not contain valid transponder" means the chip is wrong or dead, no amount of programming will fix that.

Enter the security code to unlock the immobiliser functions

All the Special Functions and Programming buttons stay greyed out until a correct code is entered. A wrong code triggers a lockout timer instead, anywhere from 10 seconds to 21 hours 20 minutes, so don't guess here.

Program the new key

Opcom path: Programming > Program Transponder-Keys > New.

Use "New" for a fresh blank chip that's never been programmed to any car. Use "Old" only if the key was already programmed to this same immobiliser before and you're re-adding it.

🔧My experience: What I actually used. I put in a brand new ID40 PCF7935 blank. I'd heard the cheap superchip clones can be hit or miss on this immobiliser generation, so I skipped that route and went with the plain ID40 instead. Cycle the ignition after the key is written.

Repeat for additional keys if needed

Only one key programs per cycle. If you need two or three keys total, cycle the ignition and repeat the Program Transponder-Keys step for each one.

Verify

Back to Measuring Blocks. The new key should now read "Correct TP-Key" instead of "Unknown key."

⚠️Warning: If programming fails. Check the measuring blocks for the transponder status before trying again. A failed attempt usually means one of: wrong transponder type, no chip actually present in the key, the chip already programmed to a different car, or picking "New" on a key that was actually already programmed elsewhere.

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Legal & safety notice

This procedure modifies vehicle system settings through the control module. Incorrect use may cause faults or warning lights. Always ensure the vehicle is secured and follow proper safety procedures.