Mirror taximeter/mirror odometer function - GF82.25-P-2012LE
MODEL 221.0/1 with CODE (965) Electrical preinstallation for rental vehicles with CODE (337) Taximeter integrated into rearview mirror as of model year 2009/YoM 08
Function requirements, general
- Circuit 30 ON
Mirror taximeter/mirror odometer, general
The taximeter control unit (A67n1) is auxiliary equipment for the taxi driver to determine the fare.
The fare is shown in the inside rearview mirror (A67).
The mirror taximeter/mirror odometer function is comprised of the following partial functions:
- Function sequence for activating the mirror taximeter/mirror odometer
- Function sequence for determining the fare
Additional function requirements for activating the mirror taximeter/mirror odometer
- Vehicle standing still (v = 0 km/h)
Function sequence for activating the mirror taximeter/mirror odometer
The mirror taximeter can be activated manually via taximeter button 1 (A67s4) or automatically if the front passenger seat is recognized as occupied.
The fare is shown in the left upper area of the inside rearview mirror. At the same time, the special vehicle multifunction control unit (SVMCU [MSS]) (N26/9) shuts off the roof sign lamp (E14/4) (with code (342) Roof sign connection for taxi). The multifunction control unit reads in the signals of the taximeter control unit for this.
The roof sign lamp is only automatically switched on or off if this function was activated beforehand in the "Taxi", "Roof sign" menu in the instrument cluster (A1).
The occupation condition of the front passenger seat is defined via the front passenger seat occupied recognition (B41/1) (without code (U18) Automatic child seat recognition (ACSR [AKSE])) or the front passenger seat occupied and child seat recognition sensor (B48) (with code (U18) Automatic child seat recognition (ACSR [AKSE]). If the front passenger seat is recognized as occupied, the restraint systems control unit (N2/7) sends a corresponding signal via chassis CAN (CAN E), central gateway control unit (N93) and interior CAN (CAN B) to the multifunction control unit.
The mirror taximeter/mirror odometer function can be switched off automatically if a shutoff time is set.
Function sequence for determining the fare
The taximeter control unit uses the distance traveled as the basis for the calculation of the fare.
The distance traveled is defined using the wheel speed, which is recorded by the left front rpm sensor (L6/1).
The ESP control unit (N47-5) reads in the signals of the rpm sensor and sends these via chassis CAN, central gateway control unit and interior CAN to the multifunction control unit.
The multifunction control unit directly actuates the taximeter control unit.
The use of the wheel speed signal to calculate the fare is subject to the German Verification Act.
If the taxi is also equipped with a credit card reader and printer (A50/2) (accessories), the fare to be paid can be settled with the card payment and a receipt can be printed out.
If the display of the fare is switched to payment mode when dark by pressing the taximeter button 4 (A67s7), the multifunction control unit sends the request to switch on the interior illumination (IBL) via interior CAN to the front SAM control unit. The front SAM control unit sends this request to the overhead control panel control unit (N70).
The interior illumination is then switched on in accordance with the data of the rain/light sensor (B38/2). The data of the rain/light sensor is read in directly by the overhead control panel control unit.
Detailed information on the actuation of individual components of the IBL can be found in the separate function description Interior illumination (IBL) function.
Storing journey data:
The taximeter control unit stores the following data in the journey memory:
- Journey information and journey shifts
- Stretches driven
- Processing of driving jobs
| Electrical function schematic for mirror taximeter/mirror odometer | PE82.25-P-2061-97SAA | ||
| Component description for instrument cluster | A1 Model 221.0/1 (except model 221.095/195) |
GF54.30-P-6000LE | |
| Model 221.095/195 | GF54.30-P-6000LEH | ||
| Component description for restraint systems control unit | N2/7 | GF91.60-P-4048LE | |
| Special vehicle multifunction control unit (SVMCU [MSS]), component description | N26/9 | GF54.21-P-4010LEA | |
| Component description for ESP control unit | N47-5 | GF42.45-P-5118LE | |
| Component description for overhead control panel control unit | N70 | GF82.20-P-5216LE | |
| Component description for central gateway control unit | N93 | GF54.21-P-4170LE | |
| Inside rearview mirror unit, component description | A67 | GF68.49-P-2105LE |