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.
System Overview - Refrigerant Circuit
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 .
- Condenser
- There are different versions. Refer to the Parts Information.
- Overview. Refer to OVERVIEW - CONDENSER .
- Removing and Installing. Refer to CONDENSER, 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 .
- Refrigerant Line
- To the condenser
- Refrigerant Line - High Pressure Side
- To the refrigerant line with the inner heat exchanger
- High Pressure Side Service Connection
- Cap: 0.4 ± 0.1 Nm
- Valve: 2 ± 0.2 Nm
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .
- Refrigerant Line - Low Pressure Side
- To the refrigerant line with the inner heat exchanger
- An additional balance weight may be present on this refrigerant line depending on the refrigerant line version and the production period. Refer to the Parts Information.
- Balance weight if installed, removing and installing. Refer to LOW PRESSURE SIDE REFRIGERANT LINE BALANCE WEIGHT, REMOVING AND INSTALLING .
- Refrigerant Circuit Pressure Sensor -G805-
- 5 ± 1 Nm
- Removing and Installing. Refer to Refrigerant Circuit Pressure Sensor -G805-, REMOVING AND INSTALLING .
- Low Pressure Side Service Connection
- Cap: 0.4 ± 0.1 Nm
- Valve: 2 ± 0.2 Nm
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .
- Refrigerant Line with Inner Heat Exchanger
- In the inner heat exchanger, warm liquid refrigerant flowing on the high pressure side delivers energy to the cold vaporous refrigerant flowing on the low pressure side. This increases the efficiency of the A/C system.
- From the condenser and A/C compressor
- Removing and Installing. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- Expansion Valve
- Removing and Installing. Refer to EXPANSION VALVE, REMOVING AND INSTALLING .
- Bolts
- 10 Nm
- Bolt
- 8 Nm
- Nut
- 8 Nm
- 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 .
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.