A/C Components Inside Passenger Compartment, Left Side
A/C Components Inside Passenger Compartment, Left Side
1 Left Front Seat Temperature Sensor (G344) and Left Front Heated Seat (Z45)
• Seat heater is not installed in all vehicles (optional equipment).
• Activation of seat heater is displayed in Climatronic control module (J255) , checking use Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
2 Accelerator Mechanism
• The kick-down switch-off for the A/C compressor by Climatronic control module (J255) (via the Compressor Regulator Valve (N280) ) is performed by request from the engine control module (data is exchanged over the CAN-Bus system). You can read the current activation status for the Compressor Regulator Valve on the measured values block for the A/C system of the Climatronic control module (J255) using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
3 Diagnostic Connection
• Perform On Board Diagnostic (OBD) on A/C system using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
4 Left Front Upper Body Outlet Temperature Sensor (G385) ( Right Front Upper Body Outlet Temperature Sensor (G386) )
• Removing and installing, refer to => [ Front Upper Body Outlet Temperature Sensors (G385)/(G386) ] Front Upper Body Outlet Temperature Sensors (G385)/(G386).
• This temperature sensor is always installed on the driver's side. The Left Front Upper Body Outlet Temperature Sensor (G385) is installed in the air guide channel leading to the left instrument panel vent.
5 Defroster Vent/Left Side Window
6 Instrument Panel Vent, Left
• Removing and installing instrument panel vents, refer to=> [ Instrument Panel Vents ] Instrument Panel Vents and.
7 Instrument Cluster Control Module (J285)
• With Outside Air Temperature Display (G106).
• The Instrument Cluster Control Module evaluates the measured value of the Outside Air Temperature Sensor (G17) and then transmits it via the Comfort databus to the Climatronic control module (J255). Check using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
8 Outside Air Temperature Display (G106)
• The Outside Air Temperature Display is a component of the Instrument Cluster Control Module (J285).
• Measured value of Outside Air Temperature Sensor (G17) is evaluated by Instrument Cluster Control Module (J285) and transmitted via Comfort CAN-Bus to the Climatronic control module (J255). Check using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
• Check the temperature sensor measured values if the temperature display is incorrect using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
9 Left Center Instrument Panel Vent
• Removing and installing instrument panel vents, refer to => [ Instrument Panel Vents ] Instrument Panel Vents and.
10 Instrument Panel Vent, Center
• Removing and installing instrument panel vents, refer to=> [ Instrument Panel Vents ] Instrument Panel Vents and.
11 Right Center Instrument Panel Vent
• Removing and installing instrument panel vents, refer to=> [ Instrument Panel Vents ] Instrument Panel Vents and.
12 Climatronic Control Module (J255)
• Different versions, with or without seat heating switch, with different temperature unit (°C or °F) on temperature setting rotary switch, rotary switches with black or silver surface. For the allocation refer to the Electronic Parts Catalog (ETKA).
• 5 cylinder vehicle may only have A/C controls, part number 8J0 820,043 starting with index "D". Refer to the Electronic Parts Catalog (ETKA) and Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
• Starting with model year 2011, A/C system control heads-part number 8J0 820,043, beginning with index "BA"-shall be gradually installed. These control modules possess an added function for the expanded change indicator that is part of the efficiency indicator for the on-board computer. Therefore, no A/C system control head with part number 8J0 820,043 up through index "G" may be installed in a vehicle containing an expanded change indicator in the on-board computer. Refer to Electronic Parts Catalog (ETKA), Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" and the owner's manual.
• Removing and installing, refer to => [ Climatronic Control Module (J255) ] Description and Operation.
• The Instrument Panel Interior Temperature Sensor (G56) is integrated in the Climatronic control module (cannot be replaced separately).
• Interior Temperature Sensor Fan (V42) is installed in Climatronic control module (J255) , however it cannot be replaced individually. Refer to=> [ Interior Temperature Sensor Fan (V42) ] Service and Repair.
• Also observe additional notes for Climatronic control module. Refer to=> [ Climatronic Control Module (J255) ] Description and Operation.
• On Board Diagnostic (OBD) of Climatronic control module is to be performed as described in Guided Fault Finding using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding".
• The buttons and rotary switches have LEDs, they cannot be replaced individually.
• The function and indicator lights in the buttons and in the rotary switches cannot be replaced separately.
13 Interior Temperature Sensor Fan (V42)
• Climatronic control module (J255) installed.
• Interior Temperature Sensor Fan, removing and installing, refer to=> [ Interior Temperature Sensor Fan (V42) ] Service and Repair.
14 Instrument Panel Interior Temperature Sensor (G56)
• Integrated in Climatronic control module (J255) , cannot be replace separately