Siemens PPD1.5 Immo Off: VAG (Audi · Volkswagen)
Immo Off on the Siemens PPD1.5 on the MPC561/2 processor control unit for vehicles of the VAG group: Audi, Volkswagen. Upload the dump — free analysis and check; apply the operation and download the ready file in your portal account.
Disabling the immobilizer in the ECU firmware — the engine starts without binding to a key and BCM.
| Operation | Immo Off |
|---|---|
| Control unit | Siemens PPD1.5 |
| Car makes | VAG — Audi, Volkswagen |
| Processor (MCU) | MPC561/2 |
| Access / memory | EXT FLASH [AM29BDD160G] |
| EXT FLASH | AM29BDD160G |
| Method | Online, from the ECU memory dump (.bin) |
| Applicability check | Free |
| Checksums | Recalculated automatically |
| Result | A ready file to write to the unit |
Siemens PPD1.5 Immo Off — 6 vehicles
Operation Immo Off is supported for the Siemens PPD1.5 block on vehicles of the VAG group (Audi, Volkswagen). In the list: Audi A4, Volkswagen Passat, Volkswagen Passat Variant. Upload the dump — the system detects the version and checks applicability for free.
| Make | Model | Version | Year |
|---|---|---|---|
| Audi | A4 | 2.0 TDI (170) Quattro | 2006 |
| Volkswagen | Passat | 2.0 TDI 6MT | 2005 |
| Volkswagen | Passat Variant | 2.0 TDI 6MT | 2005 |
| Audi | A4 | 2.0 TDI (170) | 2006 |
| Audi | A4 | 2.0 TDI (170) DPF | 2006 |
| Volkswagen | Passat | 2.0 TDI 6AT | 2005 |
Siemens PPD1.5 Immo Off — for VAG (Audi, Volkswagen)
Immo Off is disabling the immobilizer right in the engine control unit's firmware. After the operation the ECU stops checking the key tag against the BCM, CAS or EWS and starts the engine without binding to the car.
When you need Immo Off
- Installing a used (donor) unit — an ECU from another car is not matched to your key and BCM.
- Lost or broken keys — you need to start the engine while keys are being restored.
- Board repair or processor replacement — after servicing, the immobilizer binding is lost.
- Moving the ECU to a bench — starting the engine outside the car, without the factory security system.
What you get: the unit starts the engine without the immobilizer — the key tag and BCM are no longer checked.
Siemens PPD1.5 memory and reading
The Siemens PPD1.5 unit uses on the MPC561/2 processor the following: EXT FLASH — AM29BDD160G. The Immo Off operation works on the EXT FLASH [AM29BDD160G] area — that is the one to read out and upload. If OBD reading is not available for this unit, the dump is taken on the bench via Bench or Boot mode.
For the Siemens PPD1.5 block on the MPC561/2 processor the «Immo Off» operation runs online from the ECU memory dump (access — EXT FLASH [AM29BDD160G]). Read the file via OBD, Bench or Boot and upload it — the system detects Siemens PPD1.5 and checks whether the operation applies for free. You'll get the ready file with recalculated checksums in your portal account.
Frequently asked questions
Immo Off on Siemens PPD1.5 — short and to the point
What does Immo Off do on Siemens PPD1.5?
Disabling the immobilizer in the ECU firmware — the engine starts without binding to a key and BCM.
Which file should I upload?
The ECU memory dump (access EXT FLASH [AM29BDD160G]), read via OBD, Bench or Boot. Upload the file — the system detects Siemens PPD1.5 for free and checks whether the operation applies.
How much does Immo Off cost?
Uploading and analyzing the file is free. Applying the operation and downloading the ready file happen in your portal account (40 €).
Are the checksums recalculated?
Yes, automatically. The ready file is immediately writable to the unit — no need to recalculate checksums by hand.
Which vehicles is it for?
Siemens PPD1.5 with the Immo Off operation covers VAG group vehicles (Audi, Volkswagen). The system detects the exact version from the uploaded dump.
What memory and processor does Siemens PPD1.5 use?
The unit is built around the MPC561/2 processor. Memory of the unit: EXT FLASH — AM29BDD160G. The Immo Off operation needs EXT FLASH [AM29BDD160G] access.