20814604P03 — TRW EMS2 ECU, Volvo Trucks FM9
Original (stock) ECU file for the Volvo Trucks FM9 — 11000 450HP, TRW EMS2 controller, hardware 20814604P03, software 21008546P01. Unmodified factory read, usually within 3 hours after we confirm your ECU numbers.
Identification
| Vehicle | Volvo Trucks FM9 |
|---|---|
| Engine | 11000 450HP |
| ECU | TRW EMS2 |
| Hardware number | 20814604P03 |
| Software number | 21008546P01 |
Compatibility
The same TRW EMS2 with part number 20814604P03 is also fitted to these vehicles / engines in our archive:
| Vehicle | Engine | Software |
|---|---|---|
| Volvo Trucks FM9 (this page) | 11000 450HP | 21008546P01 |
| Renault Trucks PREMIUM | 11000 450HP | 21008546P01 |
Cross references
Other software levels recorded on hardware 20814604P03:
Other hardware carrying software 21008546P01:
What you get
A full, unmodified read of the TRW EMS2 as it left the factory — the binary file produced by the original reading tool, no checksum or map changes. Use it to restore a stock calibration after a failed flash or a bad tune, or as the reference file for a tuning job. One read is stored for this identification.
| Archive reference | Driver | Damos / A2L |
|---|---|---|
| FM9_0814 | FM9_0814 | — |
Delivery: released to your account and announced by email usually within 3 hours, within 24 hours on business days, once we confirm the read matches the numbers on this page.
Questions about this file
Is this original file compatible with my Volvo Trucks FM9?
Compare the hardware number (20814604P03) and the software number (21008546P01) with the identification your tool reads from the ECU. The software number must match; a different hardware revision usually means a different file. TRW EMS2.x controllers (Volvo / Renault Trucks) use P-numbers: a hardware number such as 21323765P04 and a software number such as 22929395P01. The software upgrade number is the calibration actually loaded.
What exactly do I receive when I buy the TRW EMS2 original for €25?
An unmodified factory read of the TRW EMS2 (HW 20814604P03, SW 21008546P01) as stored in our archive — a binary file in the format produced by the original reading tool. No modifications, no checksum changes: it is meant to restore the ECU to its stock calibration or to serve as a reference for a tuning job.
How and when is the file delivered?
After payment we confirm the read matches the numbers on this page and release it to your account, with an email notification — usually within 3 hours, within 24 hours on business days. If your ECU reports different numbers, tell us with the order and we look for the right file before delivering anything.
Can you also tune this TRW EMS2 or remove EGR / AdBlue / DPF?
Yes — upload your own read through the tuning service and choose the modifications; every tuning job is quoted individually before you pay. The original on this page is useful as a backup before any modification is flashed.