Drive Authorization System, Basic Function - GF80.57-P-9900A
Model all (4xWD)
Model all (CAR)
Overview
This document contains information on:
- General
- Function requirements
- Operating principle
General
The drive authorization system (DAS) ensures that the vehicle can only be unlocked and started with a valid access authorization code. The DAS checks this access authorization code. If this is valid, all the control units involved in the DAS compare the access authorization code with each other. The DAS issues start enable after a successful comparison.
Function requirements
Where transmitter key is used:
- Transmitter key in the vehicle interior
- Transmitter key authorized
When using the Digital Vehicle Key (mobile phone or Digital Vehicle Key sticker) (vehicles with vehicle access and driver authorization via mobile phone):
- Digital Vehicle Key stored in the stowage compartment in the center console
- Digital Vehicle Key authorized
The Digital Vehicle Key can functionally replace the transmitter key.
Operating principle
The access authorization code is queried by all involved control units. Check, release and feedback is performed separately by each control unit.
If the battery of the transmitter key is discharged or the wireless connection is malfunctioning, the vehicle can be started via the emergency start function. The transmitter key must be placed in the emergency start stowage compartment in the center console for this purpose. Via a transponder interface, the corresponding data are then exchanged for the identification of the transmitter key. After a brief moment, the drive authorization system then issues the start enable.
| Function schematics | |||
| Function schematic for drive authorization system | Model 118, 167, 177, 243, 247, 293 | PE80.57-P-2500-97A | |
| Model 223 | PE80.57-P-2500-97B | ||
| Model 213, 238, 257, 290 as of Model year 2021 | PE80.57-P-2500-97C | ||
| Model 206, 254 | PE80.57-P-2500-97D | ||
| Model 232 | PE80.57-P-2500-97E | ||
| Model 295, 296, 297 | PE80.57-P-2500-97F | ||
| Model 464 | PE80.57-P-2500-97G | ||
| Additional basic functions | |||
| Authorization of transmitter key/mobile phone, basic function | GF80.20-P-1004A | ||
| Position determination of transmitter key, basic function | GF80.20-P-1009A | ||
| Combustion engine control unit, basic function | GF07.08-P-9890A | ||
| Fully integrated transmission control electrohydraulic controller unit, basic function | Model all with transmission 724.0/1 | GF27.19-P-2003A | |
| Dual-clutch transmission control unit, detailed information | Model all with transmission 700.420/421/422/423 | GF27.60-P-0002A | |
| Fully integrated transmission control controller unit, basic function | Model all with transmission 725 | GF27.60-P-2003A | |
| Electronic ignition lock control unit, basic function | GF80.57-P-9890A | ||
| Transmitter key, basic function | GF80.35-P-2001A |