High Priority 100% confidence

Hissing from vents and slow loss of refrigerant

in BMW 3 Series (G20) (2017-2030)

Symptoms

  • No cold air from vents
  • Hissing from vents

DTC error codes

80120B

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A/C Technical Specifications

(F34) Gran Turismo

Refrigerant: R134a Amount (g): 550g Oil: PAG PAO 68 lub PAG ISO 46 b.d. Oil (ml): b.d.ml

(F30) Hybrid 3

Refrigerant: R134a Amount (g): 740g Oil: PAG PAO 68 lub PAG ISO 46 b.d. Oil (ml): b.d.ml

(F30/F31)

Refrigerant: R134a Amount (g): 550g Oil: PAG PAO 68 lub PAG ISO 46 b.d. Oil (ml): b.d.ml
See full specification

Other problems in 3 Series (G20)

Unusual noise and metallic grinding when A/C is on

High Priority

A/C cooling is weak and gradually loses performance

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