BMW X5: Air Conditioning Unit Disinfectants
A musty odor may be detected in the vehicle, particularly when the air conditioner is first switched on.
This is caused by microorganisms growing on the evaporator from moisture condensation.
A disinfectant can be applied to the air conditioning system:
"Airguard" by J. J. Products, Inc.; "Airsept" by The Auto Doctor or Air Conditioning and Heating System Treatment by Wurth USA, Inc.
Such disinfectants are not available from BMW of North America.
Air Conditioner Refrigeration/Oil Fill Capacities
Note that some 1993 Model Year early production R-134a equipped vehicles have under-hood labels that specify higher charge values than those specified in the chart. Testing has confirmed that the values given are the optimum fill capacities. Consult the chart before refilling. Labels with the lower refrigerant charge amount specified on the chart have been phased into production as of 11/92.
When performing repairs to the A/C system that require recharging, only the specifications given in this chart should be used, as well as the label part numbers, as appropriate. However, inadvertent refrigerant charging up to the fill capacity given on an "original" ('93 MY production prior to 11/92) under-hood label will not cause any problems.
See appropriate HVAC article for oil refill capacity for specifications not indicated in A/C LABEL BMW P/N REFERENCE table.
Refrigerant, Special Features, Production Range, Fill Capacity g (lbs), Fill Capacity ml (oz), BMW P/N
A/C LABEL BMW P/N REFERENCE
NOTE:
1. The Modine condenser was used in many E36 vehicles over the production range 9/91-3/92. This condenser has a smaller volume, and the A/C system must be charged accordingly.
2. Production start of 1993 MY E34/S38 (M5) 9/92; E32/M70 (750iL) 11/92.
3. R-134a, the environmentally friendly air conditioning refrigerant, was introduced to the U.S. market beginning with 3/92 production E32/M30 (735i/iL) vehicles.
4. Labels reflecting the proper charging volumes given on this chart are available form BMW Parts. These may be used in place of the original equipment labels on '93 model year vehicles produced before 11/92.
5. All vehicles equipped with R-134a refrigerant require special PAG lubricant.
6. Nippon Denso.
7. Seiko Seiki.
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Overview Of Heater/Air Conditioner Servomotors
Fig. 1: Identifying Heater/Air Conditioner Servomotors Components Location
Servomotor, defrosting
Servomotor, footwell, rear cabin right
Servomotor, ventilation, front right
Servomotor, stratifi
Removing And Installing/Replacing Heater
WARNING: Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant R 134a.
Follow safety instructions for handling refrigerant oil.
IMPORTANT: Risk of d
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Turbocharger Diagnosis
There are three "Golden Rules" to adhere to when diagnosing concerns on the
N54 engine:
1. When diagnosing cases of smoke from the exhaust, it is important to avoid
unnecessary replacement of
the turbochargers. Smoke can be caused by oil consumption such as the crankcase
ventilation system.
Alwa
Steering wheel
Safety information
Warning
Steering wheel adjustments while driving can
lead to unexpected steering wheel movements.
Vehicle control could be lost. There is a risk of
accident. Adjust the steering wheel while the
vehicle is stationary only.
Electric steering wheel
adjustment
General information
The
