The EME not communicating issue in BMW X5 F15 is a common problem. Here is a comprehensive solution that covers measurement, diagnosis, wiring, data, and precautions.
A common problem with the BMW X5 F15 is EME no communication, which occurs due to reasons such as the 12V battery running out of power, and the probability of its occurrence is relatively high. Currently, most of the solutions involve purchasing a new EME, but this is undoubtedly expensive, costing approximately 5000 to 6000 US dollars,and wait for a long time. 
Regarding this issue, we have a mature solution. 
 
Q: What kind of tools and capabilities do I need to complete the repair? 
A: You need a programmer that supports reading and writing of the CPU TC1797. You also need to have strong soldering capabilities for BGA chips. 
 
Q: Is it a complete solution? 
A: Yes. It includes operation steps, pinouts, data, and precautions. 
 
Q: What do customers who have purchased this complete solution think of it? 
A: Up to now, we have sold many copies. 100% of the customers have completed the repair. However, we would like to emphasize again that you must have excellent BGA soldering capabilities, not just basic soldering skills. 
 
Q: If I buy it, can I return it and get a refund? 
A: The solution is a reproducible digital product. Once it is sold, no refund will be given. 
 
Q: Is this a common problem? Why do many X5 F15 models have such a problem? 
A: Yes, this is indeed a common problem. It exists not only on the F15 but also on the F18. However, the F18 is only sold in China. 
 
Q: What are the other common problems of the EME of the BMW X5 F15? 
A: In addition to the very typical common problem of no communication, the IGBT is also prone to damage. As for issues such as the 12V battery not being charged and the air conditioner not cooling, the probability of occurrence is also relatively high.The looseness of the copper busbars at the three-phase connection leads to ablation.