IrvesBMW Posted August 30, 2023 Share Posted August 30, 2023 Greetings. The vehicle in question had a sudden cessation of functionality shortly after departing from the driveway, originally leading the user to suspect a potential issue with the start-stop system. Subsequently, the vehicle has failed to initiate the cranking process. Several errors were encountered. The occurrence of a drivetrain malfunction. The provision of fuel The user's text contains an error. The brake system is an essential component of a vehicle's overall safety mechanism. It is responsible for slowing down or stopping the vehicle by The individual had a failure and was unable to start their vehicle. They determined that the problem was not related to electricity, since a voltage measurement of 12.8V was obtained and the vehicle still failed to start. Postscript: Approximately one week before, while operating a motor vehicle, the driver experienced a sudden jolt and afterwards received an error message related to the drivetrain. The driver attempted to resolve the issue by turning the vehicle off and on again, and has since driven a distance of 200 miles without further incident. At the time, the driver did not attach any significance to this occurrence. Do you have any suggestions on potential starting points for excavation? Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 Quote Link to comment Share on other sites More sharing options...
TDudette Posted August 30, 2023 Share Posted August 30, 2023 A comprehensive diagnostic assessment is required to ascertain the specific codes that have been recorded as the first point of reference. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 After doing a diagnostic scan, the sole detected fault is U1164, which is a somewhat general error code that pertains to communication issues originating from the Electronic Control Unit (ECU). Quote Link to comment Share on other sites More sharing options...
TDudette Posted August 30, 2023 Share Posted August 30, 2023 Which equipment was used for the scanning process? Generic readers, which I assume were used to extract data, might potentially provide incorrect information on BMW vehicles. To ensure more specificity, it is recommended that a comprehensive vehicle scan using ISTA be conducted. It is advisable to inspect the fuses as a potential cause for the loss of communication, if indeed that is the problem. In addition to the primary fuse box, it is also necessary to consider the fuses located on the Front Electronic Module (FEM). Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 I just had my vehicle transported to my residence and would want to begin by inspecting all fuses connected to gasoline, drivetrain, and the electronic control unit (ECU). However, I am currently unable to locate any comprehensive diagrams or listings of these fuses. Could you please provide any relevant sources or references? Greetings Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 I have also procured an ISTA cable for the purpose of doing diagnostics using Ista-D at a later time this evening. I am hopeful that a prompt resolution may be achieved. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 After conducting many tests, it seems that there is no reaction detected from the DME/DDE unit. Does anybody have knowledge of the specific location of this? Furthermore, would the process of replacement need programming? Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 After conducting a thorough examination, I have verified the integrity of all connections, repositioned the DDE (Digital Diesel Electronics), evaluated the functionality of the Relay, re-inspected all fuses, including those next to the Relay and inside the IBS (Intelligent Battery Sensor) red box located near the rear battery. Based on my assessment, all components seem to be in satisfactory condition. There continues to be a lack of contact with the DDE. This situation is causing me significant distress. Are there any more recommendations that you can provide? I am inclined to posit that adopting a novel Direct Drive Extruder (DDE) represents the only viable solution. However, a fraction of my perspective remains convinced that the underlying problem may be attributed to either a power-related or grounding-related matter. Quote Link to comment Share on other sites More sharing options...
TDudette Posted August 30, 2023 Share Posted August 30, 2023 Have you examined the fuses located on the Front Electronic Module (FEM) situated behind the kick panel on the passenger side? Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 I was previously unaware of the existence of any further fuseboxes, since the graphic provided only depicts three fuseboxes. Quote Link to comment Share on other sites More sharing options...
TDudette Posted August 30, 2023 Share Posted August 30, 2023 Indeed, there are some resources pertaining to Finite Element Method (FEM). It is advisable to remove the kick panel and conduct a thorough examination. Quote Link to comment Share on other sites More sharing options...
TDudette Posted August 30, 2023 Share Posted August 30, 2023 The present model under discussion is the F30 series, which has similarities with the 4 series. Quote Link to comment Share on other sites More sharing options...
IrvesBMW Posted August 30, 2023 Author Share Posted August 30, 2023 Thank you for your assistance. I have reviewed all of the items and they seem to be satisfactory. I am now endeavoring to investigate the root cause of fault 8040B1, which pertains to the wake-up line connecting to the IBS sensor. Is it feasible to implement measures to prevent the DDE from initiating wake-up events? Quote Link to comment Share on other sites More sharing options...
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