Question 1

What is Component Security (CS) on VAG?

Accepted Answer

Component Security (sometimes called "Component Protection") is the generalized electronic protection used by the VAG group since 2002 to link the main electronic modules of a vehicle: engine ECU, instrument cluster, Comfort (BCM), certain ADAS modules. Each module contains a unique cryptographic identifier, and all share a common CS code for the vehicle. Replacing any of these modules with a standard module (new or used) triggers a "Component Protection active" lock until the CS code is used to pair it.

Question 2

What is the difference between VAG pin code, SKC code, and CS code?

Accepted Answer

These three terms refer to related but distinct elements. The "VAG pin code" is a generic term. The "SKC" (Secret Key Code) is the 4-digit code used for operations on the Immo III immobilizer (generation prior to 2002-2004). The "CS code" (Component Security code) is used by Immo IV (from 2002-2004): it is a more complex 7-digit code, necessary for module replacement and car key coding interventions. On a modern vehicle (2005+), it is the CS code that is needed — and it is the one we read in this service.

Question 3

Why €69 instead of €49 (Renault / PSA)?

Accepted Answer

The VAG Immo IV system is technically more complex than Renault or PSA immobilizers: Component Security protects multiple modules (not just the ECU), the cryptographic algorithms are more recent and robust, professional reading tools (ODIS, VCDS, Autel IM608) are more expensive to license. This additional cost remains very advantageous compared to Audi or VW dealership rates, which commonly charge €150 to €300 for providing a CS code.

Question 4

My Audi / VW displays “Component Protection active”, is it related to the CS?

Accepted Answer

Yes, directly. This message appears when the vehicle detects that a module (cluster, ECU, Comfort…) is not paired with its neighboring components. This typically happens after: replacing a used cluster that is not recoded, replacing an engine ECU that is not re-paired, unvalidated Comfort exchange. The only way to resolve this lock is to pair the new module with the vehicle's CS code — we provide this code as part of this service.

Question 5

Can you read the CS code from a used cluster?

Accepted Answer

Yes, but with an important note: the CS code read from a used cluster corresponds to the original vehicle of that cluster — not to your vehicle. This code is therefore used to virginize the used cluster (reset it to "virgin" state so it can be paired with your vehicle). We also offer the complete virginization service if you wish. Alternatively, some clusters can be reset to virgin state without a code if the operation is done before mounting on your vehicle.

Question 6

Which older VAG models are not covered by Immo IV?

Accepted Answer

VAG models prior to 2002 use Immo II or Immo III (for example: early Golf IV, Passat B5 before phase II, Audi A4 B5, early A6 C5). These vehicles use an SKC (4-digit Secret Key Code) and not a CS code. The reading procedure is different: we offer it on request (contact us with the exact model). Generally lower price, as the system is less complex.

Question 7

How long does the service take?

Accepted Answer

In the workshop (vehicle present) via VCDS or ODIS: 30 to 45 minutes, result the same day. Via sending the units (engine ECU + instrument cluster, direct EEPROM reading): 48 to 72 business hours after receipt. The CS code is transmitted to you via secure email (or handed over in person if service is in the workshop).

Question 8

Can you also code a VAG car key or virginize a module?

Accepted Answer

Yes, in the workshop we offer: (1) coding of new or reconditioned VAG car keys (price depending on model, €150-400 all-inclusive), (2) virginization of instrument cluster (resetting the cluster to pair it with a new vehicle — price €89-149 depending on generation), (3) virginization of engine ECU (for ECU replacement), (4) complete Component Protection pairing after module replacement. These services are subject to dedicated quotes — contact us with your specific need.

Reading CS Pin Code Immo IV — Volkswagen, Audi, Seat, Škoda

Interested in this service?

Reading CS Pin Code Immo IV — Volkswagen, Audi, Seat, Škoda

Applicable VAG Vehicles

Volkswagen

Audi

Seat and Škoda

When Do You Need the Immo IV CS Code?

Particularities of the VAG Component Security System

Methods for Reading the CS Code

Option 1: On-Vehicle Reading (workshop)

Option 2: Extraction from Sent Units (100% remotely)

Why a Higher Price than Renault/PSA (€69 vs €49)?

Service Process

Why choose Incarline?

Recognised expertise

1-year warranty

48-72h turnaround

Frequently asked questions