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2007 BMW 325xi 4x4 , Brake , ABS , traction control , airbag light on dash
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02-03-2021, 11:38 PM | #1 |
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2007 BMW 325xi 4x4 , Brake , ABS , traction control , airbag light on dash
Hello i have a 2007 BMW 325xi with the trifecta of lights ( 4x4 , ABS , traction) . I had a shop check it and they said i needed to replace this white module i.e i believe you call it the transfer case module ( please correct me if i am wrong i have only owned the bmw for a month )
My question is that will replacing this module actually fix all these problems and make my car AWD again (its RWD right now). And the other thing that is bothering me is that when i accelerate the car , the car gives a pretty big jerk somewhere around 2500 rpm once and becomes buttery smooth if i keep accelerating but if i apply the brakes (like in traffic ) and then start accelerating again the same thing happens , it gives a jerk at around 2500 rpm and is smooth afterwards. Also the car is consuming a lot of fuel right now around 4.5km/L or 10.5 miles per gallon A shop diagnosis said it had a cylinder 3 misfire . Is that the reason for this jerk and poor fuel economy and will replacing the spark plug sort out this issue ?
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02-04-2021, 05:23 PM | #2 |
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The module may or may not fix your trifecta. There are a lot of things that can cause that. Many of them cheap and easy, some very expensive. It really depends on the shop diagnosing the problem correctly.
The misfires are a symptom of engine problems unrelated to the 4wd trifecta. You need to figure out why it's doing what it's doing and correct the problems. There is a panopticon of things that can be causing the problems you're having. I recommend buying a scan tool to see what the car is telling you about the problems. The foxwell scanners are very powerful tools and friendly enough for a beginner. |
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02-05-2021, 03:13 PM | #3 | ||
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02-05-2021, 05:43 PM | #4 |
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Without a scanner we're just guessing and throwing parts at it. I can't suggest anything in good conscious without malfunction codes.
You could investigate the wheel speed sensors for free. See if any are missing or damaged, or look for severe corrosion on the signal rings. Bad calibration of the steering angle sensor will do it as well. That's basically free to repair after sinking the money for a scanner. |
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02-06-2021, 12:03 AM | #5 | |
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02-06-2021, 01:53 PM | #6 |
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https://www.ecstuning.com/b-schwaben...020sch01a~scf/
Very powerful little gizmo. You can get into PC based diagnostic software for about $50 (for the adapter cable) but personally I like having one of those in the glove box. |
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02-06-2021, 03:44 PM | #7 | |
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03-11-2021, 09:34 PM | #9 |
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Usually you describe a failure, it will be caused by many reasons. For example, you said that the cylinder misfires.
My suggestion is to buy a scanner and use the error code to troubleshoot the error. The error code will not deceive you. Where the error code points to, it means that there is a problem, which helps to solve the problem quickly. I bought an NT530 from Foxwelltool.com in 2019 and found 14 faults in my car. Then I searched various BMW forums for solutions, replaced parts, and cleared the error code. This process is quite interesting, and if you are interested in it, I also recommend you to do so. |
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03-16-2021, 04:40 PM | #10 | ||
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