So here is the fix in my situation (2011 BMW 335d with only 87k): 1. Resoldered 4x crimp connections. Two at the driver footwell and two at the passenger side footwell. These resolved 4 codes, even though those crimp connections looked good to me, no water sings at all, no oxidation.
And measure both the battery voltage and alternator voltage. If your battery was 5 volt it's probably shot. You could try putting a long charge on it like at least 5 hours. and see how long it holds the final voltage. Average life on a battery in these is 6 years. Odds are you need a new battery but check it first.
This has happened to my last GT a few times…I want to say each time it happened it was raining. Other signs of a weak battery could be your windows not rolling up all the way, and you can see the window sticks out when you close the door. Easy DIY replacement. Appreciate 0. A failing Final Stage Unit or (FSU) seems to be the cause of most battery drain situations in E39, E46 and so on equipped BMW vehicles from what I have read. I preemptively replaced mine about a year after having bought my E39. Does your heater fan actually blow air. My heater does blow air though it is cold. Changing to a $700 oem battery and registering to computer, and even changing starter motor didn't correct this occasional no-start. It is very embarassing when vallet person runs back saying your car isn't starting. 2. Driving normally without any signs of engine or transmission malfunction, the car looses power and warning lights comes on. Low Voltage. High or low battery voltage may trigger the DSC and other lights on BMW. A faulty alternator, a bad voltage regulator, or a defective BMW battery can cause this. BMW cars are susceptible to low voltage. You may notice other problems, such as BMW going into limp mode if that is the problem. Related Codes. Pressure Sensor Not Plausible
All of these electrical issue began when my positive cable got loose on the battery. Fixed issues by clearing codes: dsc light, brake squeel light, tire monitor light (code shows steering angle sensor) Current issues. Airbag light stays on with 93db code. Steps taken 1.Reseat cable under passenger chair.
2014.5 BMW 5-Series 4dr Sedan. turbocharged 560hp 4.4L V8 7-speed automated manual RWD. 69000 mi. US $5500. Seal around drivers side headlight went bad. Water got inside from carwash, and leaked down into computer modules that attach and sit below the headlight.
Cooling system components of BMW E60 models include: Radiator and coolant overflow tank. M54 and 8-cylinder engines: Belt driven coolant pump bolted to the front of the engine block. N52 and N54 engines: Electric coolant pump bolted to the right front of the engine block. Electric cooling fan attached to rear of radiator. To be more precise I received 004F40 Print Ribbon Undershoot HE / Hydraulic Unit, 004FA0 Driving Clutch, 004F43 Duty HE / Hydraulic Unit, 004F42 Assembly HE / hydraulic unit. Codes were cleared at the roadside and the battery reset. The voltage was still reading low at 11.8 at ignition off. Car was boosted and restarted fine after a 15 minute 1277 posts · Joined 2012. #6 · Aug 14, 2013. A tell of a starter brushes going bad is what is going on, it starts to happen over time until you have to hit the starter with a hammer while someone start the car. You could replace the brushes or get a new one . Working on my car is a pastime.
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Speculative diagnosis. In any other car, I would guess this is a starter relay fault. Terminal 15N is post-start ignition on, and my guess is that the starter might be drawing too much power, causing the DME to brown out, causing all the above random shorts. The no other system (FEM, etc, etc) shows any faults on startup, so I might also
You could have issues with your steering angle sensor, or wheel speed sensor, either of which could need to be replaced. Another possibility that could be causing DSC problems is a poor connection at the battery. The system requires a fair amount of power to operate, and if the battery connection is poor it may not be getting the voltage it 5) The vehicle may start, but it stalls immediately. This might seem very strange, but in certain cases, the car might actually start for a brief moment and then immediately shut off. Again, this might seem like an engine or fuel pump-related problem, but it might actually be because of a CAS module that's acting up. xDStv.
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