Pre-Entry Climate Control, Basic Function - GF83.40-P-9900A
Electric vehicles and hybrid vehicles
Overview
This document contains information on:
- General
- Function requirements
- Function
- Pre-entry climate control through unlocking the vehicle
- Pre-air conditioning for departure time
- Pre-entry climate control via pre-entry climate control button
- Evaluation
- Ventilation mode
- Heating mode
- Improve air quality
General
The vehicle interior of the parked vehicle can be pre-heated or pre-cooled, as required, before starting a journey, and air quality can be improved depending on the equipment installed.
Pre-entry climate control can be activated immediately or preprogrammed by entering a departure time. The following control options are available:
- Pre-air conditioning button
- Multimedia system (for pre-programming only)
- Telematics services for hybrid vehicles and electric vehicles (depending on equipment)
Function requirements
- No overvoltage or undervoltage of the high-voltage battery.
- State of charge of high-voltage battery over the minimum charge level.
- Circuit 15 C switched off.
- Pre-entry climate control preset.
- Improve air quality (equipment specific) using multimedia control.
Function
Pre-entry climate control through unlocking the vehicle
The aim is to briefly heat the seating area on the driver's side when entering the vehicle or to ventilate and cool the area with air from the air vents.
The climate control functions switch on during pre-heating and pre-cooling for up to five minutes.
The pre-entry climate control in the case of unlocking cannot be activated more than three times in succession when the vehicle is parked.
Pre-air conditioning for departure time
The aim is to pre-heat or pre-cool the vehicle interior before departure.
The departure time can be set, selected and activated using the multimedia control or telematics services for hybrid vehicles and electric vehicles (equipment-specific).
Up to three departure times can be configured. When the departure time is activated, the LED in the pre-entry climate control button lights up yellow.
The vehicle interior is cooled or heated until the desired temperature is reached at the set departure time.
The pre-entry climate control is activated for a maximum of t = 50 min in advance.
If the departure is delayed, the vehicle interior is air-conditioned for a further t = 5 min.
If the vehicle is connected to power supply equipment, charging of the high-voltage battery takes priority up to a specified minimum state of charge. Auxiliary climate control at departure time is only activated following this.
If the vehicle is not connected to power supply equipment and the high-voltage battery is not fully charged, the operating time of the pre-entry climate control may be shortened.
Pre-entry climate control is ended when the vehicle is started, or t = 5 min after expiration of the selected departure time.
Pre-entry climate control via pre-entry climate control button
Pre-entry climate control can also be switched on after the desired vehicle interior temperature has already been reached.
This ensures that the vehicle interior is further air-conditioned and the vehicle interior temperature is maintained at a constant level, e.g. with a stopover for up to t = 50 min.
Pre-entry climate control is switched on or off using the pre-entry climate control button in the air conditioning control panel.
Using the indicator lamps in the pre-entry climate control button, the current operating condition of the pre-entry climate control is shown:
- Indicator lamp lights up red: Heating is switched on.
- Indicator lamp lights up blue: Cooling is switched on.
- Indicator lamp lights up yellow: Departure time is preselected.
Evaluation
The control of the climate control assesses the following information for operation of the pre-entry climate control at the departure time:
- Interior temperature:
- in the headroom
- In the instrument panel area
- Specified temperature on the control of the climate control
- Outside temperature
- Solar radiation
The cooling function is active if the vehicle interior temperature lies at least T = 4°C over the set specified temperature or when the lowest-possible specified temperature is set.
The heating function is active if the vehicle interior temperature lies at least T = 4°C under the set specified temperature or when the highest-possible specified temperature is set.
Ventilation mode
If the measurement indicates that the vehicle interior is to be pre-cooled, the control of the climate control activates the following functions:
- Pre-venting for air conditioner housing and air ducts (electric A/C compressor and blower active)
- Seat ventilation for driver's seat (equipment-specific)
The seat ventilation remains switched on even after an engine start.
Heating mode
If the measurement indicates that the vehicle interior is to be heated, the control of the climate control activates the following functions:
- Heat boosting through the high voltage PTC heater:
The control of the climate control actuates the high voltage PTC heater. The high voltage PTC heater heats up the coolant. The coolant temperature in the high voltage PTC heater is recorded by the temperature sensor and read in by the control for the climate control.
If the coolant has reached a temperature of T = 35°C, the climate control system actuates the coolant circulation pump directly. At the same time, it sends the request to switch on the blower motor to the blower regulator, which then directly actuates the blower motor.
The coolant circulation pump pumps the coolant from the high voltage PTC heater to the heater core thereby enabling heating of the vehicle interior.
- Seat heating for driver's seat (equipment-specific)
- Rear window heater (outside temperature T < 5°C)
The seat heating and the rear window heater are actuated a maximum of t = 15 min before reaching the departure time.
Improve air quality
To improve air quality in the vehicle, the ionization function is also started, depending on the equipment installed, when the pre-entry climate control is started.
Even if evaluation of the freeze frame data shows that neither cooling nor heating is taking place, the function is started and switched off again after a period of t = 60 s.
The ionization remains switched on even after an engine start.
| Function schematics | |||
| Function schematic for pre-entry climate control | Model 465 with code MED2 (Upper-Mid variant with M-battery) | PE83.40-P-2502-97L | |
| Model 118, 177, 247 with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUG-IN)) except code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97A | ||
| Model 167 with code ME05 (Hybrid drive 85 kW- 94 kW variant (incl. plug-in)) | PE83.40-P-2502-97B | ||
| Model 223 with code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97C | ||
| Model 293 | PE83.40-P-2502-97D | ||
| Model 213 as of model year 2021 with hybrid drive | PE83.40-P-2502-97E | ||
| Model 243 | PE83.40-P-2502-97F | ||
| Model 192, 232 with code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97G | ||
| Model 294, 295, 296, 297 | PE83.40-P-2502-97H | ||
| Model 206, 214, 236, 254 with code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97I | ||
| Model 290 with code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97J | ||
| Model 118, 177, 247 with code ME10 (Hybrid vehicle (plug-in, PHEV)) | PE83.40-P-2502-97K | ||
| Further basic functions | |||
| User interface, basic function | GF82.00-P-9901A | ||
| Telematics services for hybrid vehicle/electric vehicle, basic function | Model all (CAR) with code 13U (Mercedes-Benz Connect - EV functions (HERMES)) with code 362 (HERMES communications module LTE) with code ME01 (Electric motor) Model all (CAR) with code 13U (Mercedes-Benz Connect - EV functions (HERMES)) with code 362 (HERMES communications module LTE) with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) Model all (CAR) with code 13U (Mercedes-Benz Connect - EV functions (HERMES)) with code 362 (HERMES communications module LTE) with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUG-IN)) |
GF82.85-P-9909A | |
| Climate control, basic function | GF83.00-P-9901A | ||
| Ionization, basic function | Model all (CAR) with code ME01 (Electric motor) with code P21 (Air quality package) Model all (CAR) with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) with code P21 (Air quality package) Model all (CAR) with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUG-IN)) with code P21 (Air quality package) |
GF83.80-P-9901A | |
| Seat climate control, basic function | Hybrid/electric vehicles with seat heating | GF91.30-P-9902A | |
| A/C operating unit, basic function | GF83.40-P-2016A | ||
| Circulation pump, basic function | GF83.40-P-2020A | ||
| Electric refrigerant compressor, basic function | GF83.55-P-2000A | ||
| High-voltage PTC heater, basic function | GF83.70-P-2014A |