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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCOMPONENT TESTING - IHKA (AUTOMATIC CLIMATE CONTROL SYSTEM)OPERATING UNIT-CONTROL WHEELS
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Operating Unit-Control Wheels
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Operating Unit-Control Wheels
Operating unit - Control wheels^D^201 Status List/31 air flow control "OFF"
Possible cause:
Air flow control potentiometer in operating unit or connection to control unit defective
NOTE: When ^D^201 Status list/31 air flow control indicates "OFF", the control unit does not switch on the function light. Only defrost and the rear window defogger can be activated. In the case of an interruption in the supply voltage of the control wheels in the operating unit, the temperature control wheel indicates ^D^201/01, 25 Temperature control wheels 15 C and 31 Air flow control "OFF" although they are in mid-position.
Troubleshooting
Possible cause:
Air flow control potentiometer in operating unit or connection to control unit defective
NOTE: When ^D^201 Status list/31 air flow control indicates "OFF", the control unit does not switch on the function light. Only defrost and the rear window defogger can be activated. In the case of an interruption in the supply voltage of the control wheels in the operating unit, the temperature control wheel indicates ^D^201/01, 25 Temperature control wheels 15 C and 31 Air flow control "OFF" although they are in mid-position.
Troubleshooting
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.