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Reading SIMOS ECUs with Alientech KESS V2

Alientech Kess V2 SIMOS connected between a laptop and an ECU on the bench
Alientech Kess V2 SIMOS
Volkswagen / Audi SIMOS petrol typical application for the SIMOS ECU
Typical application: Volkswagen / Audi SIMOS petrol (SIMOS family).

Tool × ECU family

Key points: Alientech Kess V2 SIMOS

  • Open Alientech Kess V2 SIMOS in the vendor list for this exact family — not a neighbour protocol.
  • If OBD is not listed, it is a bench or boot job.
  • Checksum correction must be on before Write. Store a virgin dump first.

This page is about using Alientech KESS V2 on the SIMOS family — not about every car in Europe. KESS V2 remains in many benches for older OBD lists (EDC15, EDC16, early EDC17). New cars are on KESS3. Keep KESS V2 for the parc it already covers; do not expect MDG1 or SIMOS18 support.

Catalogue position

ParameterDetail
Family groupSIMOS
OBD with this toollisted
Bench with this toolnot listed
Boot with this toolnot listed

Magneti Marelli IAW petrol. Older units are often K-line; later MJD/IAW need bench or boot.

Practical order

  • Identify SW and HW on the label
  • Open the tool’s vehicle list and select this family, not a neighbour (EDC16 is not EDC17)
  • If OBD is listed and the car still communicates, read first on OBD
  • If OBD is missing or the ECU is silent, go bench then boot

Brick risk on this group

Interrupted writes on SIMOS are recovered in boot, not by repeating OBD. Keep a matching original on ecuflashfiles.com or from the read you just took.

Original dumps sold on ecuflashfiles.com are for restore, comparison and workshop use. Stage 1 and delete work belongs on ecufilemarket.com. In some regions DPF off, EGR off, OPF / GPF off, SCR / AdBlue and even Stage 1 may be used only on off-road and competition cars. Confirm the law where the vehicle is registered.

Download original ECU filesStage 1 and deletes

FAQ: Alientech Kess V2 SIMOS

Does Alientech Kess V2 SIMOS work on every car?

No. Coverage is the vendor vehicle list plus the ECU family. If the protocol is missing, change tool or mode — do not force OBD.

OBD, bench or boot — which first?

OBD when listed and the car still communicates. Bench when OBD is grey. Boot when the ECU is silent or the write failed.

Where should I store the original dump?

On the work order and, when you need a matching virgin file, on ecuflashfiles.com by software number.