Catalogue identity
The TuningService.uk ECU catalogue records EDC16U3 under Bosch EDC16 (catalogue record 1600, observed 10 November 2026). The catalogue name is an identification lead; it does not by itself prove vehicle fitment or software compatibility.
This entry is grouped with EDC16U by its catalogue name for navigation. That placement does not establish hardware or calibration equivalence.
Application evidence
Application remains uncertain. TunerPad labels a Volkswagen Golf 5 file with Bosch 0281011478 and VW 03G906016B as EDC16U3. Bosch Electronic Service identifies those same part numbers as EDC16U1 for a Golf V 1.9 TDI. The file listing is therefore a conflicting identification lead, not confirmed evidence of a distinct U3 installation.
Tuning and identification
Do not select a U3 calibration, checksum routine or programming protocol from the TunerPad label alone. Read the installed controller’s full Bosch and vehicle part numbers and software, then verify against Bosch identification and the current tool’s supported ECU.
No reliable source found here establishes a distinct U3 torque model or map layout. In particular, the conflicting Golf example should not be treated as proof that U3 and U1 are interchangeable names or calibrations.
Read EDC16 torque fuel and tuning basics and EDC16 variant application and tuning differences for the shared context. Examples are not an exhaustive fitment list; check the installed ECU and current tool documentation.
Identification photograph
This Volkswagen Golf ECU label reads EDC16U1, Bosch 0 281 011 478 and VW 03G 906 016 B. TunerPad lists the same identifiers under EDC16U3, while Bosch identifies the part as EDC16U1. The photograph illustrates the naming conflict; it is not confirmation that a separate U3 ECU has been identified.
TunerPad: file listed as EDC16U3; Bosch Electronic Service: part identified as EDC16U1.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- TuningService.uk owner ECU catalogue. TuningService.uk master ECU catalogue; administrator access required. Active Bosch EDC16 labels observed on 10 November 2026; this is a dated observation, not a live feed. Source revision Catalogue records and identifiers as observed 2026-11-10; accessed 2026-11-10.
- TunerPad: Golf 5 file labelled EDC16U3. Conflicting file-list classification for 0281011478 / 03G906016B. Accessed 10 November 2026.
- Bosch Electronic Service: EDC16U1 0281011478. Bosch identifies the same part numbers as EDC16U1 for Golf V 1.9 TDI. Accessed 10 November 2026.