How to use this glossary
This starter list draws on the supplied S4Wiki glossary. Case is significant. Names and meanings must be checked against the relevant ECU function description; these examples largely come from ME7 documentation.
| Name | Expansion or context | English meaning / note |
|---|---|---|
| ASR | AntiSlipRegelung | Traction control |
| DK | Drosselklappe | Throttle plate |
| FGR | Fahrgeschwindigkeitsregler | Cruise control |
| LDR | Ladedruckregelung | Boost-pressure regulation |
| LL | Leerlauf | Idle |
| TV | Tastverhältnis | Duty cycle |
| nmot | Engine-speed variable | Engine speed |
| ldtv | Wastegate command variable | Wastegate duty cycle |
| rlsol | Load-request variable | Requested relative load |
| rk | Relative fuel-mass variable | Relative fuel quantity |
| pu | Ambient-pressure variable | Ambient pressure |
| ps | Manifold-pressure variable | Actual manifold pressure |
| pssol | Manifold-pressure request | Requested manifold pressure |
| plist | Upstream pressure variable | Actual pressure before the throttle |
| plsol | Upstream pressure request | Requested pressure before the throttle |
| DMD | Context dependent | Source lists multiple interpretations; verify in the function description |
| NWS | Camshaft-control context | The source's German expansion needs verification |
Adding an entry
Record the original spelling, a checked expansion, English explanation, ECU/software context and source. Leave an uncertain translation marked as uncertain.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- S4Wiki: Motronic abbreviations. S4Wiki contributors; source site states Creative Commons Attribution. Source revision oldid 5191; accessed 2026-11-10.