Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Component Location Overview - Components Outside Of Vehicle Interior
For A/C systems with refrigerant R1234yf, the desiccant bag/dryer cartridge must be replaced each time the refrigerant circuit is opened. Refer to COMPONENTS, REPLACING .
Under certain conditions, the desiccant bag no longer needs to be replaced each time the refrigerant circuit is opened on A/C systems with refrigerant R134a. Refer to Components, Replacing .
- Vehicle Interior Forced Air Extraction
- Checking. Refer to Vehicle Diagnostic Tester and VEHICLE INTERIOR FORCED AIR EXTRACTION, CHECKING .
- Removing and Installing. Refer to VEHICLE INTERIOR FORCED AIR EXTRACTION, REMOVING AND INSTALLING .
- A/C Humidity Sensor -G260-
- Check: via the Vehicle Electrical System Control Module -J519- using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to => Wiring Diagram.
- Removing and Installing. Refer to A/C Humidity Sensor -G260-, REMOVING AND INSTALLING .
- Expansion Valve
- Tightening specifications. Refer to SYSTEM OVERVIEW - REFRIGERANT CIRCUIT .
- Removing and Installing. Refer to EXPANSION VALVE, REMOVING AND INSTALLING .
- Desiccant Bag
- Overview. Refer to OVERVIEW - CONDENSER .
- Removing and Installing. Refer to DESICCANT BAG/DRYER CARTRIDGE, REMOVING AND INSTALLING .NOTE:
For A/C systems with refrigerant R1234yf, the desiccant bag/dryer cartridge must be replaced each time the refrigerant circuit is opened. Refer to COMPONENTS, REPLACING .
Under certain conditions, the desiccant bag no longer needs to be replaced each time the refrigerant circuit is opened on A/C systems with refrigerant R134a. Refer to Components, Replacing .
- Outside Air Temperature Sensor -G17-
- Check: via the Vehicle Electrical System Control Module -J519- using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to => Wiring Diagram.
- Removing and Installing. Refer to Outside Air Temperature Sensor -G17-, REMOVING AND INSTALLING .
- Condenser
- With integrated receiver/dryer
- Overview. Refer to OVERVIEW - CONDENSER .
- Removing and Installing. Refer to CONDENSER, REMOVING AND INSTALLING .NOTE:
Under certain conditions, the receiver/dryer with desiccant bag no longer needs to be replaced after every time the refrigerant circuit is opened. Refer to COMPONENTS, REPLACING or Components, Replacing .
- A/C Compressor
- Overview. Refer to OVERVIEW - A/C COMPRESSOR POWER UNIT .
- Removing and Installing. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING .
- Removing and installing from the bracket. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING ON BRACKET .
- Evacuating and Charging Valve, High Pressure Side
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .
- Refrigerant Circuit Pressure Sensor -G805-
- 8 Nm
- To check. Refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to => Wiring Diagram.
- Removing and Installing. Refer to Refrigerant Circuit Pressure Sensor -G805-, REMOVING AND INSTALLING .
- Evacuating and Charging Valve, Low Pressure Side
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .
- Refrigerant Line with Inner Heat Exchanger
- From the condenser and A/C compressor
- Removing and Installing. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- Air Quality Sensor -G238-
- Only for vehicles with Climatronic.
- To check. Refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to => Wiring Diagram.
- Removing and Installing. Refer to Air Quality Sensor -G238-, REMOVING AND INSTALLING .
- Fresh Air Intake
- Removing and Installing. Refer to FRESH AIR INTAKE, REMOVING AND INSTALLING .
- Fresh Air Intake Cover
- Removing and Installing. Refer to FRESH AIR INTAKE COVER, REMOVING AND INSTALLING .
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.