Manufacturer: VAG (VW, AUDI, SKODA, SEAT)
Brand: SIEMENS
Model: SIMOS PPD1.2
Function: Immo off
Emulator: No
Immo off Siemens SIMOS PPD1.2: VAG models
The Siemens SIMOS PPD1.2 ECU is widely used in 2.0 TDI diesel engines across VAG brands such as Volkswagen, Audi, Seat, and Skoda. Immobilizer-related issues in these ECUs often prevent the vehicle from starting, especially after ECU replacement or retrofitting. This guide details a reliable immo off procedure for the SIMOS PPD1.2 ECU, using tested tools and verified methods to disable the immobilizer function entirely.
Whether you’re working on a VW Passat or an Audi A3 Quattro, this solution applies to a broad range of supported models.
Supported vehicle models with Siemens SIMOS PPD1.2 ECU
The ECU’s application list spans several carmakers; for example:
- Audi A3 8P / 8PA (incl. Quattro & DSG variants)
- Audi A3 Sportback 2006
- Seat Leon FR 1P1 (6MT & 6AT)
- Seat Altea 5P1 / Freetrack 5P5
- Seat Toledo 5P2
- Skoda Octavia RS / Combi RS (1Z3 / 1Z5)
- Volkswagen Jetta 1K (multiple engine codes)
- Volkswagen Bora 1K5
- Volkswagen Vento 1K5
- Volkswagen Sagitar 1K
- Volkswagen Touran 1T1 / 1T2
- Volkswagen Passat 3C
All models listed are equipped with 2.0 TDI engines from 2005–2007 using the SIMOS PPD1.2 ECU.
Siemens SIMOS PPD1.2 immo off: necessary tools and software
To perform an immo off on a SIMOS PPD1.2 ECU, you will need the following tools and software:
- CK Decode: An immo off online software specifically designed for immobilizer removal.
- Diagnostic interface: OBD2 cable or any compatible diagnostic interface to connect your vehicle’s ECU to your computer.
- Computer or laptop: With a stable internet connection to access CK Decode.
- Basic tool kit: Screwdrivers and other tools to access the ECU if needed.
SIEMENS SIMOS PPD1.2 Immo off with CK Decode
Using CK Decode for the immo off procedure is straightforward. CK Decode is an online tool that simplifies the immobilizer removal process. Here’s how to use it:
- Download CKDecode through this link
- Click on the Functions Tab and select VAG – SIEMENS – SIMOS PPD1.2 – Immo off
- Read the Flash with your interface and upload the file
- Click Process button
- Write the file processed by CKDecode
