BMW 1992 525i Electrical Troubleshooting Manual page 421

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CLIMATE REGULATION WITH FILTER (IHKR/F3)
HOT AT ALL TIMES
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CONTROL MODULE
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0670.4
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CONTROL4
AT MAXIMUM
2)
OPEN WITH
CONTROLS
AT MAXIMUM
3)
SENSOR FAN
4)
LH
TEMPERATURE
REGULATION
5) AIR VOLUME
CONTROL
WHEEL
6)
RH
TEMPERATURE
REGULATION
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TEMPERATURE
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