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.
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HOMESERVICE MANUALSBMW2004320I (E46) (CANADA) L6-2.2L M54REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGSERVICE AND REPAIRPROCEDURESRETROFITTING
2004 BMW 320i (E46) (CANADA) L6-2.2L M54
Retrofitting
2004 BMW 320i (E46) (CANADA) L6-2.2L M54SECTION Retrofitting
SYSTEM CONVERSION
WHEN TO RETROFIT
As long as R-12 is available, it should be used to service a vehicle with an R-12 system.
When R-12 supplies are unavailable, the customers may be willing to pay for a retrofit.
STANDARD RETROFIT
To achieve the most effective system retrofit, follow the instructions in Service Information Bulletin # 64 O1 95 (4179). Retrofit kits have been developed for the E31, E32, E34, and E36 models, to provide comparable system performance. The kits include a new receiver/dryer; hoses, service fitting, refrigerant controls, and other parts.
WHEN TO RETROFIT
As long as R-12 is available, it should be used to service a vehicle with an R-12 system.
When R-12 supplies are unavailable, the customers may be willing to pay for a retrofit.
STANDARD RETROFIT
To achieve the most effective system retrofit, follow the instructions in Service Information Bulletin # 64 O1 95 (4179). Retrofit kits have been developed for the E31, E32, E34, and E36 models, to provide comparable system performance. The kits include a new receiver/dryer; hoses, service fitting, refrigerant controls, and other parts.
RENDER: 1.0x
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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.