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 MANUALSBMW1996850CI (E31) V12-5379CC 5.4L SOHC (M73)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSELECTRONIC VEHICLE MODULE (EKM)DEFECT CODE 04 - 05
1996 BMW 850Ci (E31) V12-5379cc 5.4L SOHC (M73)
Defect Code 04 - 05
1996 BMW 850Ci (E31) V12-5379cc 5.4L SOHC (M73)SECTION Defect Code 04 - 05
Defect Codes 04, 05:
*D* Defect code memory: Alarm output to DWA defective:
Explanation: The wire to the DWA has a break or a short to ground or plus.
Note: The EKM switches the horn relay via the alarm output in the DWA The relay is energized when the engine is started with the drive protection function active.
Troubleshooting: As displayed on screen. Check the output with *D* activate components. Function test of module with *D* special functions - system test.
RENDER: 1.0x
NO RELATED
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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.