Components In Engine Compartment and Rear of Vehicle

Components In Engine Compartment And Rear Of Vehicle







1. Sun roof with solar cells
- Not applicable in USA

2. Service connection
- Low pressure side
- For measuring, discharging and filling
- Closing cap with seal, reinstall after using service valve

3. Dust and pollen filter
- Observe replacement intervals 8E
- Different versions (with and without active-carbon-filter element

4. Threaded connection in refrigerant line (with restrictor)
- Refrigerant circuit must be drained before opening threaded connection

5. Service connection
- High pressure side
- For measuring, discharging and filling
- Closing cap with seal, reinstall after using service valve

6. Air Quality Sensor G238
- Function
- Checking

7. Heated Windshield Control Module J505
- Function
- Disabling
- Removing and installing Electrical Equipment and

8. Accumulator
- Always discharge refrigerant circuit before removing

9. Coolant Fan Control (FC)Control Module J293 2)
- Request for activation of Coolant Fan V7 is transmitted by operating and display module, Climatronic Control Module J255 by way of CAN-Bus system to relevant engine control module.
- Switches Coolant Fan V7 infinitely to desired output
- Different versions are installed at different locations depending on vehicle equipment
- Checking (reading measuring value block, display group "014"), , "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051 B or Vehicle Diagnosis Service Syst. VAS5052

10. Condenser
- Always discharge refrigerant circuit before removing
- Removing and installing refrigerant lines
- Removing and installing condenser

11. Outside Air Temperature Sensor G17
- Removing
- Disconnect connector at Outside Air Temperature Sensor G17 and remove from mount in air guide.
- Resistance values
- Measuring value of Outside Air Temperature Sensor G17 is evaluated by Instrument Cluster Control Module J285 and transmitted via CAN-Bus comfort system to operating and display module, Climatronic Control Module J255 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051 B or Vehicle Diagnosis Service Syst. VAS5052

12. A/C Compressor Regulator Valve N280 1), 2)
- Checking activation and function

13. Compressor
- Removing compressor from bracket/reinstalling
- Removing refrigerant line at compressor/installing
- Removing and mounting compressor
- Type of compressor differs depending on engine (installed to right or left of engine, 6-cyl. engine, 8-cyl. engine)
- Different types of compressor are installed depending on country version (e.g. "Denso" type designation "6 SEU" for Europe and "7 SEU" for hot countries)
- Removing and installing ribbed belt
- Replacing belt pulley
- Checking and replacing compressor drive unit

CAUTION: Refrigerant circuit must be discharged before removing compressor.

14. High Pressure Sensor G65 1)
- Function, removing and installing
- Measuring value of High Pressure Sensor G65 is displayed in measuring value block (display group "001") of operating and display module, Climatronic Control Module J255 and

15. Air extractor
- Sealing lips of air extraction vent must move freely and close automatically
- To ensure proper functioning of passenger compartment ventilation, air guides must not be blocked by luggage compartment lining